1
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Dumitraș D, Gal E, Silvestru C, Pop A. Metal Complexes Containing Homoleptic Diorganoselenium(II) Ligands: Synthesis, Characterization and Investigation of Optical Properties. Molecules 2024; 29:792. [PMID: 38398544 PMCID: PMC10892405 DOI: 10.3390/molecules29040792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 01/25/2024] [Accepted: 01/29/2024] [Indexed: 02/25/2024] Open
Abstract
[(Z)-2'-{2-C6H5-(4H)-oxazol-5-one}CHC6H4]2Se (5, L1) and [(Z)-4'-{2-C6H5-(4H)-oxazol-5-one}CHC6H4]2Se (6, L2) were prepared, structurally characterized and used as ligands to obtain new metal complexes of types [MX(Ln)] [L1: M = Ag, X = OTf (7); M = Au, X = Cl (13); L2: M = Ag, X = OTf (8); M = Au, X = Cl (14)], [(MX)2(Ln)] [M = Ag, X = OTf, L1 (9); L2 (10)], [ZnCl2(Ln)] [L1 (15); L2 (16)] and [Ag(Ln)][PF6] [L1 (11); L2 (12)]. The silver complexes 7 and 8 were ionic species (1:1 electrolytes) in a MeCN solution, while in the solid state, the triflate fragments were bonded to the silver cations. Similarly, the 2:1 complexes 9 and 10 were found to behave as 1:2 electrolytes in a MeCN solution, but single-crystal X-ray diffraction demonstrated that compound 9 showed the formation of a dimer in the solid state: a tetranuclear [Ag(OTf)]4 built through bridging triflate ligands was coordinated by two bridging organoselenium ligands through the nitrogen from the oxazolone ring and the selenium atoms in a 1κN:2κSe fashion. Supramolecular architectures supported by intermolecular C-H∙∙∙π, C-H∙∙∙O, Cl∙∙∙H and F∙∙∙H interactions were observed in compounds 4, 5 and 9. The compounds exhibited similar photophysical properties, with a bathochromic shift in the UV-Vis spectra caused by the position of the oxazolone ring on the phenyl ring attached to the selenium atoms.
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Affiliation(s)
- Darius Dumitraș
- Supramolecular Organic and Organometallic Chemistry Centre, Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, Str. Arany Janos 11, RO-400028 Cluj-Napoca, Romania; (D.D.); (C.S.)
| | - Emese Gal
- Research Center on Fundamental and Applied Heterochemistry, Faculty of Chemistry and Chemical Engineering, Babeș-Bolyai University, Str. Arany Janos 11, RO-400028 Cluj-Napoca, Romania;
| | - Cristian Silvestru
- Supramolecular Organic and Organometallic Chemistry Centre, Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, Str. Arany Janos 11, RO-400028 Cluj-Napoca, Romania; (D.D.); (C.S.)
| | - Alexandra Pop
- Supramolecular Organic and Organometallic Chemistry Centre, Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, Str. Arany Janos 11, RO-400028 Cluj-Napoca, Romania; (D.D.); (C.S.)
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2
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Zhang J, Bhattacharya S, Müller AB, Kiss L, Silvestru C, Kuhnert N, Kortz U. Mixed noble metal-oxo clusters: platinum(IV)-gold(III) oxoanion [Pt IV2Au III3O 6((CH 3) 2AsO 2) 6] . Chem Commun (Camb) 2023; 59:5918-5921. [PMID: 37171021 DOI: 10.1039/d3cc00243h] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The first discrete mixed platinum(IV)-gold(III) oxoanion [PtIV2AuIII3O6((CH3)2AsO2)6]- (1) was synthesized by reaction of H2Pt(OH)6 with H[AuCl4] in a simple one-pot procedure in aqueous solution at pH 7 and comprises two equivalent PtIVO6(As(CH3)2)3 units which are linked by three square-planar AuIIIO4 units. Polyanion 1 could be isolated as a potassium or sodium salt in good yield, which were structurally characterized in the solid state by single-crystal XRD and TGA, and in solution by multinuclear (1H, 13C, 195Pt) NMR, indicating that polyanion 1 is stable in solution, which was confirmed by ESI-MS studies. The sodium salt of 1 undergoes a clean single-crystal-to-single-crystal (SCSC) structural transformation upon rehydration and dehydration.
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Affiliation(s)
- Jiayao Zhang
- School of Science, Constructor University (formerly Jacobs University), Campus Ring 1, 28759 Bremen, Germany.
| | - Saurav Bhattacharya
- School of Science, Constructor University (formerly Jacobs University), Campus Ring 1, 28759 Bremen, Germany.
- Department of Chemistry, BITS Pilani K. K. Birla Goa Campus, 403726 Goa, India
| | - Anja B Müller
- School of Science, Constructor University (formerly Jacobs University), Campus Ring 1, 28759 Bremen, Germany.
| | - Levente Kiss
- Department of Chemistry, Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, 400028 Cluj-Napoca, Romania
| | - Cristian Silvestru
- Department of Chemistry, Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, 400028 Cluj-Napoca, Romania
| | - Nikolai Kuhnert
- School of Science, Constructor University (formerly Jacobs University), Campus Ring 1, 28759 Bremen, Germany.
| | - Ulrich Kortz
- School of Science, Constructor University (formerly Jacobs University), Campus Ring 1, 28759 Bremen, Germany.
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3
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Sierra S, Dalmau D, Alegre-Requena JV, Pop A, Silvestru C, Marín ML, Boscá F, Urriolabeitia EP. Synthesis of Bis(amino acids) Containing the Styryl-cyclobutane Core by Photosensitized [2+2]-Cross-cycloaddition of Allylidene-5(4 H)-oxazolones. Int J Mol Sci 2023; 24:ijms24087583. [PMID: 37108745 PMCID: PMC10140832 DOI: 10.3390/ijms24087583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/15/2023] [Accepted: 04/17/2023] [Indexed: 04/29/2023] Open
Abstract
The irradiation of 2-aryl-4-(E-3'-aryl-allylidene)-5(4H)-oxazolones 1 with blue light (456 nm) in the presence of [Ru(bpy)3](BF4)2 (bpy = 2,2'-bipyridine, 5% mol) gives the unstable cyclobutane-bis(oxazolones) 2 by [2+2]-photocycloaddition of two oxazolones 1. Each oxazolone contributes to the formation of 2 with a different C=C bond, one of them reacting through the exocyclic C=C bond, while the other does so through the styryl group. Treatment of unstable cyclobutanes 2 with NaOMe/MeOH produces the oxazolone ring opening reaction, affording stable styryl-cyclobutane bis(amino acids) 3. The reaction starts with formation of the T1 excited state of the photosensitizer 3[Ru*(bpy)3]2+, which reacts with S0 of oxazolones 1 through energy transfer to give the oxazolone T1 state 3(oxa*)-1, which is the reactive species and was characterized by transient absorption spectroscopy. Measurement of the half-life of 3(oxa*)-1 for 1a, 1b and 1d shows large values for 1a and 1b (10-12 μs), while that of 1d is shorter (726 ns). Density functional theory (DFT) modeling displays strong structural differences in the T1 states of the three oxazolones. Moreover, study of the spin density of T1 state 3(oxa*)-1 provides clues to understanding the different reactivity of 4-allylidene-oxazolones described here with respect to the previously reported 4-arylidene-oxazolones.
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Affiliation(s)
- Sonia Sierra
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - David Dalmau
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Juan V Alegre-Requena
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Alexandra Pop
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, 400028 Cluj-Napoca, Romania
| | - Cristian Silvestru
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, 400028 Cluj-Napoca, Romania
| | - Maria Luisa Marín
- Instituto Universitario Mixto de Tecnología Química (ITQ-UPV), Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, 46022 València, Spain
| | - Francisco Boscá
- Instituto Universitario Mixto de Tecnología Química (ITQ-UPV), Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, 46022 València, Spain
| | - Esteban P Urriolabeitia
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
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4
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Duneş G, Soran A, Silvestru C. Organopnictogen(III) bis(arylthiolates) containing NCN-aryl pincer ligands: from synthesis and characterization to reactivity. Dalton Trans 2022; 51:10406-10419. [PMID: 35762306 DOI: 10.1039/d2dt01436j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Salt elimination reactions between organopnictogen(III) dichlorides, RPnCl2 [R1 = 2,6-(Me2NCH2)2C6H3, Pn = Sb (1), Bi (2); R2 = 2,6-{MeN(CH2CH2)2NCH2}2C6H3, Pn = Sb (3), Bi (4); R3 = 2,6-{O(CH2CH2)2NCH2}2C6H3, Pn = Sb (5), Bi (6)] and 2 equivalents of KSC6H3Me2-2,6 afforded the isolation of a series of new NCN-chelated monoorganopnictogen(III) bis(arylthiolates), RPn(SC6H3Me2-2,6)2 [R1, Pn = Sb (7), Bi (8); R2, Pn = Sb (9), Bi (10); R3, Pn = Sb (11), Bi (12)]. Compounds 7 and 8 are unstable upon exposure to a dry O2 atmosphere and their aerobic decomposition yields the monoorganopnictogen(III) oxides, cyclo-[2,6-(Me2NCH2)2C6H3Pn(μ-O)]2 [Pn = Sb (13), Bi (14)] with concomitant formation of the corresponding disulfide, ArS-SAr (Ar = C6H3Me2-2,6). The oxidative addition of elemental sulfur or selenium to 7 undergoes a similar reaction path and gives stable heterocyclic species cyclo-[2,6-(Me2NCH2)2C6H3Sb(μ-E)]2 [E = S (15), Se (16)]. The reaction of 12 with I2 (1 : 1 molar ratio) gives the diiodide [2,6-{O(CH2CH2)2NCH2}2C6H3]BiI2 (17), along with the S-S oxidative coupling by-product, ArS-SAr. The use of an excess of iodine affords the crystallization of a 2 : 1 iodine adduct of 17 (17·0.5I2), built through halogen bonding. All new compounds were characterized by multinuclear NMR spectroscopy and ESI-MS as well as single crystal X-ray diffraction (except compounds 9 and 10).
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Affiliation(s)
- Gabriel Duneş
- Department of Chemistry, Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, 11 Arany Janos, 400028 Cluj-Napoca, Romania.
| | - Albert Soran
- Department of Chemistry, Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, 11 Arany Janos, 400028 Cluj-Napoca, Romania.
| | - Cristian Silvestru
- Department of Chemistry, Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, 11 Arany Janos, 400028 Cluj-Napoca, Romania.
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5
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Afloarei C, Barbul I, Somesan AA, Silvestru C, Varga RA. Supramolecular architectures in novel diphenyl(aryl)tin(iv) chlorides. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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6
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Feriel H, Arfaoui Y, Silvestru C, Bourguiba NF. Synthesis, structural and spectroscopic studies, DFT calculations, thermal characterization and Hirshfeld surface analysis of copper(II) organic-inorganic hybrid material (C12H22N2)[CuCl4]. J COORD CHEM 2022. [DOI: 10.1080/00958972.2022.2039642] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Harzi Feriel
- Faculty of Sciences of Tunis, Laboratory of Materials, Crystal Chemistry and Applied Thermodynamics, University of Tunis El Manar, Tunis, Tunisia
| | - Youssef Arfaoui
- Faculty of Sciences of Tunis, Laboratory of Characterizations, Applications and Modeling of Materials, University of Tunis El Manar, Tunis, Tunisia
| | - Cristian Silvestru
- Department of Chemistry, Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, Cluj-Napoca, Romania
| | - Noura Fakhar Bourguiba
- Faculty of Sciences of Tunis, Laboratory of Materials, Crystal Chemistry and Applied Thermodynamics, University of Tunis El Manar, Tunis, Tunisia
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7
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Sierra S, Gomez MV, Jiménez AI, Pop A, Silvestru C, Marín ML, Boscá F, Sastre G, Gómez-Bengoa E, Urriolabeitia EP. Stereoselective, Ruthenium-Photocatalyzed Synthesis of 1,2-Diaminotruxinic Bis-amino Acids from 4-Arylidene-5(4 H)-oxazolones. J Org Chem 2022; 87:3529-3545. [PMID: 35143202 PMCID: PMC8902759 DOI: 10.1021/acs.joc.1c03092] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
![]()
The irradiation of
(Z)-2-phenyl-4-aryliden-5(4H)-oxazolones 1 in deoxygenated CH2Cl2 at 25 °C
with blue light (465 nm) in
the presence of [Ru(bpy)3](BF4)2 (5%
mole ratio) as a triplet photocatalyst promotes
the [2+2] photocycloaddition of the C=C bonds of the 4-arylidene
moiety, thus allowing the completely regio- and stereoselective formation
of cyclobutane-bis(oxazolone)s 2 as single stereoisomers.
Cyclobutanes 2 have been unambiguously characterized
as the μ-isomers and contain two E-oxazolones
coupled in an anti-head-to-head form. The use of
continuous-flow techniques in microreactors allows the synthesis of
cyclobutanes 2 in only 60 min, compared with the 24–48
h required in batch mode. Ring opening of the oxazolone heterocycle
in 2 with a base affords the corresponding 1,2-diaminotruxinic
bis-amino esters 3, which are also obtained selectively
as μ-isomers. The ruthenium complex behaves as a triplet photocatalyst,
generating the reactive excited state of the oxazolone via an energy-transfer
process. This reactive excited state has been characterized as a triplet
diradical 3(E/Z)-1* by laser flash photolysis (transient absorption spectroscopy).
This technique also shows that this excited state is the same when
starting from either (Z)- or (E)-oxazolones.
Density functional theory calculations show that the first step of
the [2+2] cycloaddition between 3(E/Z)-1* and (Z)-1 is formation of
the C(H)–C(H) bond and that (Z) to (E) isomerization takes place at the 1,4-diradical thus formed.
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Affiliation(s)
- Sonia Sierra
- Instituto de Síntesis Química y Catálisis Homogénea, ISQCH (CSIC-Universidad de Zaragoza), Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - M Victoria Gomez
- Instituto Regional de Investigación Científica Aplicada (IRICA), Universidad de Castilla-La Mancha, Avenida Camilo José Cela s/n, 13071 Ciudad Real, Spain
| | - Ana I Jiménez
- Instituto de Síntesis Química y Catálisis Homogénea, ISQCH (CSIC-Universidad de Zaragoza), Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Alexandra Pop
- Department of Chemistry, Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, 11 Arany Janos, 400028 Cluj-Napoca, Romania
| | - Cristian Silvestru
- Department of Chemistry, Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, 11 Arany Janos, 400028 Cluj-Napoca, Romania
| | - Maria Luisa Marín
- Instituto Universitario Mixto de Tecnología Química (ITQ-UPV), Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos s/n, 46022 Valencia, Spain
| | - Francisco Boscá
- Instituto Universitario Mixto de Tecnología Química (ITQ-UPV), Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos s/n, 46022 Valencia, Spain
| | - Germán Sastre
- Instituto Universitario Mixto de Tecnología Química (ITQ-UPV), Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos s/n, 46022 Valencia, Spain
| | - Enrique Gómez-Bengoa
- Departamento de Química Orgánica I, Universidad del País Vasco, UPV-EHU, Apdo. 1072, CP-20080 Donostia-San Sebastián, Spain
| | - Esteban P Urriolabeitia
- Instituto de Síntesis Química y Catálisis Homogénea, ISQCH (CSIC-Universidad de Zaragoza), Pedro Cerbuna 12, 50009 Zaragoza, Spain
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8
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Someșan A, Vieriu S, Crăciun A, Silvestru C, Chiroi P, Nutu A, Jurj A, Lajos R, Berindan‐Neagoe I, Varga RA. C
,
O
‐Chelated organotin(IV) derivatives as potential anticancer agents: Synthesis, characterization, and cytotoxic activity. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Adrian‐Alexandru Someșan
- Supramolecular Organic and Organometallic Chemistry Centre, Department of Chemistry and Chemical Engineering Babeș‐Bolyai University Cluj‐Napoca Romania
| | - Sabina‐Mădălina Vieriu
- Supramolecular Organic and Organometallic Chemistry Centre, Department of Chemistry and Chemical Engineering Babeș‐Bolyai University Cluj‐Napoca Romania
| | - Alexandru Crăciun
- Supramolecular Organic and Organometallic Chemistry Centre, Department of Chemistry and Chemical Engineering Babeș‐Bolyai University Cluj‐Napoca Romania
| | - Cristian Silvestru
- Supramolecular Organic and Organometallic Chemistry Centre, Department of Chemistry and Chemical Engineering Babeș‐Bolyai University Cluj‐Napoca Romania
| | - Paul Chiroi
- Research Center for Functional Genomics, Biomedicine and Translational Medicine Iuliu Hatieganu University of Medicine and Pharmacy Cluj‐Napoca Romania
| | - Andreea Nutu
- Research Center for Functional Genomics, Biomedicine and Translational Medicine Iuliu Hatieganu University of Medicine and Pharmacy Cluj‐Napoca Romania
| | - Ancuta Jurj
- Research Center for Functional Genomics, Biomedicine and Translational Medicine Iuliu Hatieganu University of Medicine and Pharmacy Cluj‐Napoca Romania
| | - Raduly Lajos
- Research Center for Functional Genomics, Biomedicine and Translational Medicine Iuliu Hatieganu University of Medicine and Pharmacy Cluj‐Napoca Romania
| | - Ioana Berindan‐Neagoe
- Research Center for Functional Genomics, Biomedicine and Translational Medicine Iuliu Hatieganu University of Medicine and Pharmacy Cluj‐Napoca Romania
| | - Richard A. Varga
- Supramolecular Organic and Organometallic Chemistry Centre, Department of Chemistry and Chemical Engineering Babeș‐Bolyai University Cluj‐Napoca Romania
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9
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Anton A, Soran A, Silvestru C. Synthesis, physicochemical properties, crystal molecular structure and DFT investigation of an organobismuth(III) bis(dimethyldithiocarbamate) and its organolithium precursor. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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Sierra S, Dalmau D, Higuera S, Cortés D, Crespo O, Jimenez AI, Pop A, Silvestru C, Urriolabeitia EP. Reactivity of ( Z)-4-Aryliden-5(4 H)-thiazolones: [2 + 2]-Photocycloaddition, Ring-Opening Reactions, and Influence of the Lewis Acid BF 3. J Org Chem 2021; 86:12119-12140. [PMID: 34479406 PMCID: PMC9129068 DOI: 10.1021/acs.joc.1c01458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
The
irradiation of (Z)-2-phenyl-4-aryliden-5(4H)-thiazolones 2 with blue light (465 nm) in
CH2Cl2 solution promotes [2 + 2]-photocycloaddition
of the exocyclic C=C bonds and the formation of the dispirocyclobutanes 3. This reaction takes place with high stereoselectivity,
given that the ε-isomer (1,3 head-to-tail syn coupling) is formed
in more than 90% yield in most of the cases. However, irradiation
of 5(4H)-thiazolones 2 with blue light
(456 nm) in dry MeOH in the presence of BF3·OEt2 leads to the monospirocyclobutanes 4 with full
stereoselectivity, also affording the ε-isomer. A ring-opening
reaction of only one of the thiazolone rings appears to have taken
place in 4 upon methanolysis, leading to the corresponding
ester and thioamide groups. The treatment of free 4-aryliden-5(4H)-thiazolones 2 with a base in alcohol (NaOR/ROH)
also produces a ring-opening reaction of the heterocycle by methanolysis,
although, under these reaction conditions, further intramolecular
S-attack at the exocyclic C(H)=C bond and cyclization is observed,
forming the dihydrothiazoles 5 or 6 as mixtures
of cis (RS/SR)-
and trans (RR/SS)-isomers with high diastereomeric excess. trans-(RR/SS)-Dihydrothiazoles 6 can be
isolated as pure diastereoisomers by column chromatography. Surprisingly,
dihydrothiazoles 5 can also be obtained by the treatment
of 4-aryliden-5(4H)-thiazolones 2 with
BF3·OEt2 in methanol in the absence of
a base.
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Affiliation(s)
- Sonia Sierra
- Instituto de Síntesis Química y Catálisis Homogénea, ISQCH (CSIC-Universidad de Zaragoza), Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - David Dalmau
- Instituto de Síntesis Química y Catálisis Homogénea, ISQCH (CSIC-Universidad de Zaragoza), Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Sheila Higuera
- Instituto de Síntesis Química y Catálisis Homogénea, ISQCH (CSIC-Universidad de Zaragoza), Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Darío Cortés
- Instituto de Síntesis Química y Catálisis Homogénea, ISQCH (CSIC-Universidad de Zaragoza), Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Olga Crespo
- Instituto de Síntesis Química y Catálisis Homogénea, ISQCH (CSIC-Universidad de Zaragoza), Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Ana I Jimenez
- Instituto de Síntesis Química y Catálisis Homogénea, ISQCH (CSIC-Universidad de Zaragoza), Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Alexandra Pop
- Supramolecular Organic and Organometallic Chemistry Centre, Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, Str. Arany Janos 11, 400028 Cluj-Napoca, Romania
| | - Cristian Silvestru
- Supramolecular Organic and Organometallic Chemistry Centre, Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, Str. Arany Janos 11, 400028 Cluj-Napoca, Romania
| | - Esteban P Urriolabeitia
- Instituto de Síntesis Química y Catálisis Homogénea, ISQCH (CSIC-Universidad de Zaragoza), Pedro Cerbuna 12, 50009 Zaragoza, Spain
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11
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Kiss L, Pop A, Shova S, Raț CI, Silvestru C. Synthesis and characterization of [4‐{(CH
2
O)
2
CH}C
6
H
4
]
2
Hg, [4‐(O=CH)C
6
H
4
]
2
Hg and [(
E
)‐4‐(RN=CH)C
6
H
4
]
2
Hg (R = 2′‐py, 4′‐py, 2′‐pyCH
2
, 4′‐pyCH
2
). Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Levente Kiss
- Supramolecular Organic and Organometallic Chemistry Centre, Department of Chemistry, Faculty of Chemistry and Chemical Engineering Babeș‐Bolyai University Cluj‐Napoca Romania
| | - Alexandra Pop
- Supramolecular Organic and Organometallic Chemistry Centre, Department of Chemistry, Faculty of Chemistry and Chemical Engineering Babeș‐Bolyai University Cluj‐Napoca Romania
| | - Sergiu Shova
- Department of Inorganic Polymers Institute of Macromolecular Chemistry “Petru Poni” Iași Romania
| | - Ciprian I. Raț
- Supramolecular Organic and Organometallic Chemistry Centre, Department of Chemistry, Faculty of Chemistry and Chemical Engineering Babeș‐Bolyai University Cluj‐Napoca Romania
| | - Cristian Silvestru
- Supramolecular Organic and Organometallic Chemistry Centre, Department of Chemistry, Faculty of Chemistry and Chemical Engineering Babeș‐Bolyai University Cluj‐Napoca Romania
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12
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Ramezanpour A, Karami K, Kharaziha M, Silvestru C, Bayat P. Synthesis and characterization of the ternary graphene oxide, MnFe
2
O
4
nanoparticles, and Polyamidoamine dendrons nanocomposite decorated with palladium as a heterogeneous catalyst for nitroaromatics reduction. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6329] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Azar Ramezanpour
- Department of Chemistry Isfahan University of Technology Isfahan Iran
| | - Kazem Karami
- Department of Chemistry Isfahan University of Technology Isfahan Iran
| | - Mahshid Kharaziha
- Department of Materials Engineering Isfahan University of Technology Isfahan Iran
| | - Cristian Silvestru
- Supramolecular Organic and Organometallic Chemistry Centre, Department of Chemistry, Faculty of Chemistry and Chemical Engineering Babeş‐Bolyai University Cluj‐Napoca Romania
| | - Parvaneh Bayat
- Department of Chemistry Isfahan University of Technology Isfahan Iran
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13
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Garcia-Sanz C, Andreu A, de Las Rivas B, Jimenez AI, Pop A, Silvestru C, Urriolabeitia EP, Palomo JM. Pd-Oxazolone complexes conjugated to an engineered enzyme: improving fluorescence and catalytic properties. Org Biomol Chem 2021; 19:2773-2783. [PMID: 33690764 DOI: 10.1039/d1ob00305d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Different Pd-complexes containing orthometallated push-pull oxazolones were inserted by supramolecular Pd-amino acid coordination on two genetically engineered modified variants of the thermoalkalophilic Geobacillus thermocatenolatus lipase (GTL). Pd-lipase conjugation was performed on the solid phase in the previously immobilized form of GTL under mild conditions, and soluble conjugated Pd-GTL complexes were obtained by simply desorbing by washing with an acetonitrile aqueous solution. Three different Pd complexes were incorporated into two different genetically modified enzyme variants, one containing all the natural cysteine residues changed to serine residues, and another variant including an additional Cys mutation directly in the catalytic serine (Ser114Cys). The new Pd-enzyme conjugates were fluorescent even at ppm concentrations, while under the same conditions free Pd complexes did not show fluorescence at all. The Pd conjugation with the enzyme extremely increases the catalytic profile of the corresponding Pd complex from 200 to almost 1000-fold in the hydrogenation of arenes in aqueous media, achieving in the case of GTL conjugated with orthopalladated 4a an outstanding TOF value of 27 428 min-1. Also the applicability of GTL-C114 conjugated with orthopalladated 4b in a site-selective C-H activation reaction under mild conditions has been demonstrated. Therefore, the Pd incorporation into the enzyme produces a highly stable conjugate, and improves remarkably the catalytic activity and selectivity, as well as the fluorescence intensity, of the Pd complexes.
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Affiliation(s)
- Carla Garcia-Sanz
- Department of Biocatalysis, Institute of Catalysis (ICP-CSIC), Marie Curie 2, 28049 Madrid, Spain.
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14
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Vieriu SM, Someşan AA, Silvestru C, Licarete E, Banciu M, Varga RA. Synthesis, structural characterization and in vitro antiproliferative effects of novel organotin( iv) compounds with nicotinate and isonicotinate moieties on carcinoma cells. NEW J CHEM 2021. [DOI: 10.1039/d0nj05069e] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Novel triorganotin(iv) nicotinates and isonicotinates were successfully synthesized and fully characterized. The preliminary results for their in vitro antiproliferative activity against the mouse colon carcinoma C26 cell line are also reported.
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Affiliation(s)
- Sabina-Mădălina Vieriu
- Supramolecular Organic and Organometallic Chemistry Center
- Department of Chemistry
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- Cluj-Napoca
| | - Adrian-Alexandru Someşan
- Supramolecular Organic and Organometallic Chemistry Center
- Department of Chemistry
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- Cluj-Napoca
| | - Cristian Silvestru
- Supramolecular Organic and Organometallic Chemistry Center
- Department of Chemistry
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- Cluj-Napoca
| | - Emilia Licarete
- Department of Molecular Biology and Biotechnology
- Faculty of Biology and Geology
- Babeş-Bolyai University
- Cluj-Napoca
- Romania
| | - Manuela Banciu
- Department of Molecular Biology and Biotechnology
- Faculty of Biology and Geology
- Babeş-Bolyai University
- Cluj-Napoca
- Romania
| | - Richard A. Varga
- Supramolecular Organic and Organometallic Chemistry Center
- Department of Chemistry
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- Cluj-Napoca
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15
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Someşan AA, Silvestru C, Varga RA. Reactivity of a carbonyl moiety in organotin( iv) compounds: novel Pd( ii) and Cu( ii) complexes supported by organotin( iv) ligands. NEW J CHEM 2021. [DOI: 10.1039/d0nj06016j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Converting the carbonyl moiety of an (aryl)organotin(iv) compound gives other functional groups that can act as metalloligands.
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Affiliation(s)
- Adrian-Alexandru Someşan
- Department of Chemistry
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC)
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- Cluj-Napoca
| | - Cristian Silvestru
- Department of Chemistry
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC)
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- Cluj-Napoca
| | - Richard A. Varga
- Department of Chemistry
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC)
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- Cluj-Napoca
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16
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Urriolabeitia EP, Sánchez P, Pop A, Silvestru C, Laga E, Jiménez AI, Cativiela C. Synthesis of esters of diaminotruxillic bis-amino acids by Pd-mediated photocycloaddition of analogs of the Kaede protein chromophore. Beilstein J Org Chem 2020; 16:1111-1123. [PMID: 32550926 PMCID: PMC7277947 DOI: 10.3762/bjoc.16.98] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 05/08/2020] [Indexed: 02/03/2023] Open
Abstract
The stereoselective synthesis of truxillic bis-amino esters from polyfunctional oxazolones is reported. The reaction of 4-((Z)-arylidene)-2-(E)-styryl-5(4H)-oxazolones 2 with Pd(OAc)2 resulted in ortho-palladation and the formation of a dinuclear open-book complexes 3 with carboxylate bridges, where the Pd atom is C^N bonded to the oxazolone. In 3 the two exocyclic C=C bonds of the oxazolone are in a face-to-face arrangement, which is optimal for their [2 + 2] photocycloaddition. Irradiation of dimers 3 in CH2Cl2 solution with blue light (465 nm) promoted the chemo- and stereoselective [2 + 2] photocycloaddition of the exocyclic C=C bonds and the formation of cyclobutane-containing ortho-palladated complexes 4. Treatment of 4 with CO in a MeOH/NCMe mixture promoted the methoxycarbonylation of the palladated carbon and the release of the corresponding ortho-functionalized 1,3-diaminotruxillic bis-amino esters 5 as single isomers.
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Affiliation(s)
- Esteban P Urriolabeitia
- Instituto de Síntesis Química y Catálisis Homogénea, ISQCH (CSIC - Universidad de Zaragoza), Pedro Cerbuna 12, E-50009 Zaragoza, Spain
| | - Pablo Sánchez
- Instituto de Síntesis Química y Catálisis Homogénea, ISQCH (CSIC - Universidad de Zaragoza), Pedro Cerbuna 12, E-50009 Zaragoza, Spain
| | - Alexandra Pop
- Supramolecular Organic and Organometallic Chemistry Centre, Departament of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, Str. Arany Janos 11, RO-400028 Cluj-Napoca, Romania
| | - Cristian Silvestru
- Supramolecular Organic and Organometallic Chemistry Centre, Departament of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, Str. Arany Janos 11, RO-400028 Cluj-Napoca, Romania
| | - Eduardo Laga
- Instituto de Síntesis Química y Catálisis Homogénea, ISQCH (CSIC - Universidad de Zaragoza), Pedro Cerbuna 12, E-50009 Zaragoza, Spain
| | - Ana I Jiménez
- Instituto de Síntesis Química y Catálisis Homogénea, ISQCH (CSIC - Universidad de Zaragoza), Pedro Cerbuna 12, E-50009 Zaragoza, Spain
| | - Carlos Cativiela
- Instituto de Síntesis Química y Catálisis Homogénea, ISQCH (CSIC - Universidad de Zaragoza), Pedro Cerbuna 12, E-50009 Zaragoza, Spain
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17
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Şuteu R, Raţ CI, Silvestru C, Simion A, Candu N, Pârvulescu VI, Silvestru A. Hypercoordinated diorganoantimony(III) compounds of types [2‐(Me
2
NCH
2
)C
6
H
4
]
2
SbL and [PhCH
2
N(CH
2
C
6
H
4
)
2
]SbL (L = Cl, ONO
2
, OSO
2
CF
3
). Synthesis, structure and catalytic behaviour in the Henry reaction. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5393] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Răzvan Şuteu
- Department of Chemistry, Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), Faculty of Chemistry and Chemical EngineeringBabeş‐Bolyai University 11 Arany Janos 400028 Cluj‐Napoca Romania
| | - Ciprian I. Raţ
- Department of Chemistry, Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), Faculty of Chemistry and Chemical EngineeringBabeş‐Bolyai University 11 Arany Janos 400028 Cluj‐Napoca Romania
| | - Cristian Silvestru
- Department of Chemistry, Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), Faculty of Chemistry and Chemical EngineeringBabeş‐Bolyai University 11 Arany Janos 400028 Cluj‐Napoca Romania
| | - Andrada Simion
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of ChemistryUniversity of Bucharest 4‐12 Regina Elisabeta Av.S3 030018 Bucharest Romania
| | - Natalia Candu
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of ChemistryUniversity of Bucharest 4‐12 Regina Elisabeta Av.S3 030018 Bucharest Romania
| | - Vasile I. Pârvulescu
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of ChemistryUniversity of Bucharest 4‐12 Regina Elisabeta Av.S3 030018 Bucharest Romania
| | - Anca Silvestru
- Department of Chemistry, Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), Faculty of Chemistry and Chemical EngineeringBabeş‐Bolyai University 11 Arany Janos 400028 Cluj‐Napoca Romania
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18
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Ma T, Yang P, Dammann I, Lin Z, Mougharbel AS, Li MX, Adǎscǎliţei F, Mitea R, Silvestru C, Thorstenson C, Ullrich MS, Cseh K, Jakupec MA, Keppler BK, Donalisio M, Cavalli R, Lembo D, Kortz U. Tetra-(p-tolyl)antimony(III)-Containing Heteropolytungstates, [{(p-tolyl)SbIII}4(A-α-XW9O34)2]n− (X = P, As, or Ge): Synthesis, Structure, and Study of Antibacterial and Antitumor Activity. Inorg Chem 2020; 59:2978-2987. [DOI: 10.1021/acs.inorgchem.9b03322] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tian Ma
- Department of Life Sciences and Chemistry, Jacobs University, 28759 Bremen, Germany
| | - Peng Yang
- Department of Life Sciences and Chemistry, Jacobs University, 28759 Bremen, Germany
| | - Inga Dammann
- Department of Life Sciences and Chemistry, Jacobs University, 28759 Bremen, Germany
| | - Zhengguo Lin
- Department of Life Sciences and Chemistry, Jacobs University, 28759 Bremen, Germany
| | - Ali S. Mougharbel
- Department of Life Sciences and Chemistry, Jacobs University, 28759 Bremen, Germany
| | - Ming-Xing Li
- Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, P. R. China
| | - Florin Adǎscǎliţei
- Department of Chemistry, Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, 400028 Cluj-Napoca, Romania
| | - Raluca Mitea
- Department of Chemistry, Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, 400028 Cluj-Napoca, Romania
| | - Cristian Silvestru
- Department of Chemistry, Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, 400028 Cluj-Napoca, Romania
| | - Candice Thorstenson
- Department of Life Sciences and Chemistry, Jacobs University, 28759 Bremen, Germany
| | - Matthias S. Ullrich
- Department of Life Sciences and Chemistry, Jacobs University, 28759 Bremen, Germany
| | - Klaudia Cseh
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria
| | - Michael A. Jakupec
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria
| | - Bernhard K. Keppler
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria
| | - Manuela Donalisio
- Department of Clinical and Biological Sciences, University of Turin, 10043 Orbassano, Turin, Italy
| | - Roberta Cavalli
- Department of Drug Science and Technology, University of Turin, 10125 Turin, Italy
| | - David Lembo
- Department of Clinical and Biological Sciences, University of Turin, 10043 Orbassano, Turin, Italy
| | - Ulrich Kortz
- Department of Life Sciences and Chemistry, Jacobs University, 28759 Bremen, Germany
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19
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Fritzsche AM, Scholz S, Krasowska M, Bhattacharyya K, Toma AM, Silvestru C, Korb M, Rüffer T, Lang H, Auer AA, Mehring M. Evaluation of bismuth-based dispersion energy donors – synthesis, structure and theoretical study of 2-biphenylbismuth( iii) derivatives. Phys Chem Chem Phys 2020; 22:10189-10211. [DOI: 10.1039/c9cp06924k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Intramolecular Bi⋯π arene London dispersion interactions in (biphenyl)3−xBiXx amount to ca. 20 kJ mol−1 with distances of 3.8–4.0 Å.
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Affiliation(s)
- Ana-Maria Fritzsche
- Technische Universität Chemnitz
- Fakultät für Naturwissenschaften
- Institut für Chemie
- Professur Koordinationschemie
- 09107 Chemnitz
| | - Sebastian Scholz
- Technische Universität Chemnitz
- Fakultät für Naturwissenschaften
- Institut für Chemie
- Professur Koordinationschemie
- 09107 Chemnitz
| | | | | | - Ana Maria Toma
- Technische Universität Chemnitz
- Fakultät für Naturwissenschaften
- Institut für Chemie
- Professur Koordinationschemie
- 09107 Chemnitz
| | - Cristian Silvestru
- Babeş-Bolyai University
- Faculty of Chemistry and Chemical Engineering
- Department of Chemistry
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC)
- 400028 Cluj-Napoca
| | - Marcus Korb
- Technische Universität Chemnitz
- Fakultät für Naturwissenschaften
- Institut für Chemie
- Professur Anorganische Chemie
- 09107 Chemnitz
| | - Tobias Rüffer
- Technische Universität Chemnitz
- Fakultät für Naturwissenschaften
- Institut für Chemie
- Professur Anorganische Chemie
- 09107 Chemnitz
| | - Heinrich Lang
- Center for Materials
- Architectures and Integration of Nanomembranes (MAIN)
- 09126 Chemnitz
- Germany
- Technische Universität Chemnitz
| | - Alexander A. Auer
- Max-Planck-Institut für Kohlenforschung
- 45470 Mülheim an der Ruhr
- Germany
| | - Michael Mehring
- Technische Universität Chemnitz
- Fakultät für Naturwissenschaften
- Institut für Chemie
- Professur Koordinationschemie
- 09107 Chemnitz
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20
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Sava A, Kegyes KT, Popuş BT, Dan BC, Silvestru C, Raţ CI. Halogen bonding between entirely negative fluorine atoms? Evidence from the crystal packing of some gold( i) and gold( iii) complexes with extensively fluorinated m-terphenyl ligands and triphenylphosphane. CrystEngComm 2020. [DOI: 10.1039/d0ce00671h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Intermolecular interactions between fluorine atoms, analogous to halogen bonding, are able to drive the solid-state arrangement of molecules.
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Affiliation(s)
- Alexandru Sava
- Supramolecular Organic and Organometallic Chemistry Centre
- Chemistry Department
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- Cluj-Napoca RO-400028
| | - Krisztina T. Kegyes
- Supramolecular Organic and Organometallic Chemistry Centre
- Chemistry Department
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- Cluj-Napoca RO-400028
| | - Bianca T. Popuş
- Supramolecular Organic and Organometallic Chemistry Centre
- Chemistry Department
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- Cluj-Napoca RO-400028
| | - Bernadette C. Dan
- Supramolecular Organic and Organometallic Chemistry Centre
- Chemistry Department
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- Cluj-Napoca RO-400028
| | - Cristian Silvestru
- Supramolecular Organic and Organometallic Chemistry Centre
- Chemistry Department
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- Cluj-Napoca RO-400028
| | - Ciprian I. Raţ
- Supramolecular Organic and Organometallic Chemistry Centre
- Chemistry Department
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- Cluj-Napoca RO-400028
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21
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Someşan A, Le Coz E, Raţ CI, Dorcet V, Roisnel T, Silvestru C, Sarazin Y. Lead(II) Siloxides. Chemistry 2019; 25:16236-16240. [DOI: 10.1002/chem.201904713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Adrian‐Alexandru Someşan
- Supramolecular Organic and Organometallic Chemistry CentreChemistry DepartmentFaculty of Chemistry and Chemical EngineeringBabeş-Bolyai University Cluj-Napoca 400028 Romania
| | - Erwann Le Coz
- Univ Rennes, CNRSISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 35000 Rennes France
| | - Ciprian Ionuţ Raţ
- Supramolecular Organic and Organometallic Chemistry CentreChemistry DepartmentFaculty of Chemistry and Chemical EngineeringBabeş-Bolyai University Cluj-Napoca 400028 Romania
| | - Vincent Dorcet
- Univ Rennes, CNRSISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 35000 Rennes France
| | - Thierry Roisnel
- Univ Rennes, CNRSISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 35000 Rennes France
| | - Cristian Silvestru
- Supramolecular Organic and Organometallic Chemistry CentreChemistry DepartmentFaculty of Chemistry and Chemical EngineeringBabeş-Bolyai University Cluj-Napoca 400028 Romania
| | - Yann Sarazin
- Univ Rennes, CNRSISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 35000 Rennes France
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22
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Abstract
We report here on the utilisation of a readily available bidentate aminofluoroalkoxide in lead(ii) chemistry. Stable heteroleptic three-coordinate complexes can be produced in high yields, including a convenient amido synthetic precursor and a rare case of PbII-boryloxide.
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Affiliation(s)
- Adrian-Alexandru Someşan
- Supramolecular Organic and Organometallic Chemistry Centre, Chemistry Department, Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, RO-400028 Cluj-Napoca, Romania.
| | - Thierry Roisnel
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Vincent Dorcet
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Cristian Silvestru
- Supramolecular Organic and Organometallic Chemistry Centre, Chemistry Department, Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, RO-400028 Cluj-Napoca, Romania.
| | - Yann Sarazin
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
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23
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Mocanu T, Kiss L, Sava A, Shova S, Silvestru C, Andruh M. Coordination polymers and supramolecular solid-state architectures constructed from an organometallic tecton, bis(4-pyridyl)mercury. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.03.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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24
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Pop A, Silvestru C, Silvestru A. Organoselenium and organotellurium compounds containing chalcogen-oxygen bonds in organic synthesis or related processes. Physical Sciences Reviews 2019. [DOI: 10.1515/psr-2018-0061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Abstract
This chapter emphasizes aspects related to the role of organochalcogen (Se, Te) compounds with single E‒O and/or double E=O (E=Se, Te) bonds in organic synthesis, as reagents, intermediates, or catalysts, and it gives a larger extent mainly to data reported in the field during the last ten years. For each of these two heavier chalcogens the material is structured according to the oxidation state of the chalcogen and, for the same oxidation state, in sections dedicated to a particular type of compounds. Functionalization or cyclization reactions in which the organochalcogen compounds take part as nucleophiles, electrophiles or radicals, employed in various synthetic transformations, are discussed and, where available, the mechanistic aspects are outlined. New chiral species and new strategies were developed during last years in order to increase the yield, the reaction rate and the stereoselectivity in specific organic transformations, i.e. addition, oxidation, elimination, cyclization or rearrangement reactions. A notably attention was devoted to easily accessible and environmental friendly catalysts, re-usable and “green” solvents, as well as waste-free procedures.
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25
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Karami K, Ramezanpour A, Zakariazadeh M, Silvestru C. Catalytic activity and facile recovery of a cyclometalated N‐heterocyclic carbene palladium(II) complex immobilized by non‐covalent interactions on reduced graphene oxide. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4907] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Kazem Karami
- Department of ChemistryIsfahan University of Technology Isfahan 84156/83111 Iran
| | - Azar Ramezanpour
- Department of ChemistryIsfahan University of Technology Isfahan 84156/83111 Iran
| | - Mostafa Zakariazadeh
- Research Institute for Fundamental Sciences (RIFS)University of Tabriz Tabriz Iran
| | - Cristian Silvestru
- Department of Chemistry and Chemical EngineeringBabes‐Bolyai University Cluj‐Napoca Romania
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26
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Ţopîrlan AV, Patrascu AA, Sava A, Popescu DL, Silvestru C, Haiduc I, Andruh M. Coordination polymers constructed from triorganotin(IV) nodes and fumarato spacers. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2018.12.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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27
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Aragoni MC, Arca M, Blake AJ, Cadoni E, Copolovici LO, Isaia F, Lippolis V, Murgia S, Pop AM, Silvestru C, Tidey JP, Varga RA. Reaction of imidazoline-2-selone derivatives with mesityltellurenyl iodide: a unique example of a 3c-4e Se→Te←Se three-body system embedding a tellurenyl cation. NEW J CHEM 2019. [DOI: 10.1039/c9nj01593k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
1,2-Bis(3-methyl-4-imidazolin-2-selone)ethane was used to stabilize the first example of an authentic mesityltellurenyl cation, [MesTe]+, as a charge transfer adduct featuring a 3c-4e Se→Te←Se three-body system.
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Affiliation(s)
- M. Carla Aragoni
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato (Cagliari)
- Italy
| | - Massimiliano Arca
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato (Cagliari)
- Italy
| | | | - Enzo Cadoni
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato (Cagliari)
- Italy
| | - Lucian O. Copolovici
- Faculty of Food Engineering
- Tourism and Environmental Protection, and Institute of Technical and Natural Sciences Research-Development-Innovation
- “Aurel Vlaicu” University
- Arad
- Romania
| | - Francesco Isaia
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato (Cagliari)
- Italy
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato (Cagliari)
- Italy
| | - Sergio Murgia
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato (Cagliari)
- Italy
| | - Alexandra M. Pop
- Department of Chemistry
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC)
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- 400028 Cluj-Napoca
| | - Cristian Silvestru
- Department of Chemistry
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC)
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- 400028 Cluj-Napoca
| | | | - Richard A. Varga
- Department of Chemistry
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC)
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- 400028 Cluj-Napoca
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Someşan AA, Barbul I, Vieriu SM, Varga RA, Silvestru C. Novel mono- and bimetallic organotin(iv) compounds as potential linkers for coordination polymers. Dalton Trans 2019; 48:6527-6538. [DOI: 10.1039/c9dt00817a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organotin(iv) compounds might be used as linkers for building coordination polymers as suggested by the isolation of [{2-(OCH)C6H4}Me2SnO(O)CC5H4N-4]ZnTPP.
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Affiliation(s)
- Adrian-Alexandru Someşan
- Department of Chemistry
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC)
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- 400028 Cluj-Napoca
| | - Ioana Barbul
- Department of Chemistry
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC)
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- 400028 Cluj-Napoca
| | - Sabina-Mădălina Vieriu
- Department of Chemistry
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC)
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- 400028 Cluj-Napoca
| | - Richard A. Varga
- Department of Chemistry
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC)
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- 400028 Cluj-Napoca
| | - Cristian Silvestru
- Department of Chemistry
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC)
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- 400028 Cluj-Napoca
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Beleagă A, Denes E, Silvestru C, Silvestru A. Experimental evidence for hypercoordination in triorganotelluronium halides with 2-(Me 2NCH 2)C 6H 4 groups. NEW J CHEM 2019. [DOI: 10.1039/c9nj02530h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Triorganotelluronium halides of type [{2-(Me2NCH2)C6H4}nPh3−nTe]+X− (n = 1–3, X = Cl, Br, I) were prepared and structurally characterized both in solution and in the solid state, showing a (C,N)-chelating behavior of the 2-(Me2NCH2)C6H4 groups.
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Affiliation(s)
- Anca Beleagă
- Department of Chemistry
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC)
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- 400028 Cluj-Napoca
| | - Eleonora Denes
- Department of Chemistry
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC)
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- 400028 Cluj-Napoca
| | - Cristian Silvestru
- Department of Chemistry
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC)
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- 400028 Cluj-Napoca
| | - Anca Silvestru
- Department of Chemistry
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC)
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- 400028 Cluj-Napoca
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Abstract
The first examples of lead(ii) boroxides, [Pb(OB{CH(SiMe3)2}2)2] (1) and [{N^C}PbOB{CH(SiMe3)2}2] (5; N^C = 2-Me2NCH2C6H4), were prepared via simple protocols. These structurally characterised compounds are stable and, unlike lead(ii) alkoxides and siloxides, do not trigger uncontrolled formation of lead(ii) oxoclusters.
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Affiliation(s)
- Adrian-Alexandru Someşan
- Supramolecular Organic and Organometallic Chemistry Centre, Chemistry Department, Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, Cluj-Napoca RO-400028, Romania.
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Silvestru C, Andruh M. Ionel Haiduc – A Life Dedicated to Science. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Chircă I, Silvestru C, Breunig HJ, Raţ CI. Synthesis and characterization of diorganoantimony(III) and -bismuth(III) halides with 2-(Et2NCH2)C6H4 and 2-(i-Pr2NCH2)C6H4 substituents. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.11.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Cadar O, Pöllnitz A, Mărgineanu D, Silvestru C. Solid-state structure and solution behaviour of organomercury(II) compounds containing 2-(Me2NCH2)C6H4- moieties. Supramolecular aspects. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Someşan AA, Varga RA, Silvestru C. New organotin(IV) bromides containing potential donor ligands. Synthesis, characterization and supramolecular architecture. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.09.066] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Ben Kiran A, Mocanu T, Pöllnitz A, Shova S, Andruh M, Silvestru C. Triphenylbismuth(v) di[(iso)nicotinates] - transmetallation agents or divergent organometalloligands? First organobismuth(v)-based silver(i) coordination polymers. Dalton Trans 2018; 47:2531-2542. [PMID: 29384531 DOI: 10.1039/c7dt04516f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The reaction of Ph3BiCl2 with alkali salts of isonicotinic and nicotinic acids afforded Ph3Bi[O(O)CC5H4N-4]2 (1) and Ph3Bi[O(O)CC5H4N-3]2 (2), respectively, which were characterized by multinuclear NMR spectroscopy in solution, mass spectrometry and IR spectroscopy in the solid state. Their molecular structures were established by single-crystal X-ray diffraction. For both 1 and 2 the molecules contain a trigonal bipyramidal C3BiO2 core, with the phenyl groups in equatorial positions. The potential use of 1 and 2 as ditopic organometalloligands was investigated. The reaction of 1 or 2 with Me3SnCl (1 : 2 molar ratio) resulted in carboxylato ligand exchange and the formation of Me3Sn[O(O)CC5H4N-4] (3) and Me3Sn[O(O)CC5H4N-3] (4) besides Ph3BiCl2. The crystals of both 3 and 4 contain 1-D coordination polymers built through intermolecular N → Sn interactions. The treatment of Ni[S2P(OiPr)2]2 with 1 and 2, respectively, resulted, in addition to di(carboxylato)nickel(ii) derivatives, in isolation of Ph3Bi and the disulphane [(iPrO)2P(S)S]2. New coordination polymers were obtained by reacting 1 and 2 with various silver(i) salts: [Ag{Ph3Bi[O(O)CC5H4N-4]2}(OTf)] (5), [Ag{Ph3Bi[O(O)CC5H4N-3]2}(OTf)]·CH2Cl2 (6·CH2Cl2), [Ag{Ph3Bi[O(O)CC5H4N-4]2}](SbF6)·2THF (7·2THF), [Ag{Ph3Bi[O(O)CC5H4N-3]2}](SbF6)·CH2Cl2 (8·CH2Cl2) and [Ag{Ph3Bi[O(O)CC5H4N-3]2}(NO3)]·CH2Cl2 (9·CH2Cl2). The crystal structures of 5 and 6 can be described as 1-D chains linked by triflate bridges in pairs of chains and 2-D networks, respectively. Compound 7 features a 2-D grid-like topology of the network, with tecton 1 acting as a tridentate ligand through both nitrogen and one oxygen atoms. The linker 2 molecules adopt either cis (compound 6) or trans (compounds 8 and 9) conformation. Complexes 8 and 9 are 1-D chain polymers exhibiting zig-zag and wavy motifs, respectively. The dimensionality of the structures is extended by the presence of supramolecular interactions (ππ, AgAg, AgO).
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Affiliation(s)
- Ahmad Ben Kiran
- Department of Chemistry, Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, 11 Arany Janos, 400028 Cluj-Napoca, Romania.
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Raţ CI, Soran A, Varga RA, Silvestru C. C–H Bond Activation Mediated by Inorganic and Organometallic Compounds of Main Group Metals. Advances in Organometallic Chemistry 2018. [DOI: 10.1016/bs.adomc.2018.07.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Ilie A, Crespo O, Gimeno MC, Holthausen MC, Laguna A, Diefenbach M, Silvestru C. (N,Se) and (Se,N,Se) Ligands Based on Carborane and Pyridine Fragments - Reactivity of 2,6-[(1′-Me-1′,2′-closo-C2B10H10)SeCH2]2C5H3N towards Copper and Silver. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700075] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Adriana Ilie
- Departamentul de Chimie; Centrul de Chimie Supramoleculară Organică şi Organometalică (CCSOOM); Facultatea de Chimie şi Inginerie Chimică; Universitatea Babeş-Bolyai; 400028 Cluj-Napoca Romania
| | - Olga Crespo
- Departamento de Química Inorgánica; Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); Universidad de Zaragoza-CSIC; 50009 Zaragoza Spain
| | - M. Concepción Gimeno
- Departamento de Química Inorgánica; Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); Universidad de Zaragoza-CSIC; 50009 Zaragoza Spain
| | - Max C. Holthausen
- Institut für Anorganische und Analytische Chemie; Goethe-Universität Frankfurt am Main; Max-von-Laue-Str. 7 60438 Frankfurt am Main Germany
| | - Antonio Laguna
- Departamento de Química Inorgánica; Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); Universidad de Zaragoza-CSIC; 50009 Zaragoza Spain
| | - Martin Diefenbach
- Institut für Anorganische und Analytische Chemie; Goethe-Universität Frankfurt am Main; Max-von-Laue-Str. 7 60438 Frankfurt am Main Germany
| | - Cristian Silvestru
- Departamentul de Chimie; Centrul de Chimie Supramoleculară Organică şi Organometalică (CCSOOM); Facultatea de Chimie şi Inginerie Chimică; Universitatea Babeş-Bolyai; 400028 Cluj-Napoca Romania
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38
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Mertens L, Leonhardt C, Rüffer T, Toma A, Silvestru C, Mehring M. Heterobimetallic tin(II) oxido clusters of the type [{Sn 6 (μ 3 -O) 4 (μ 3 -OCH 2 R) 4 } {W(CO) 5 } 4 ] and [{Sn 5 (μ 3 -O) 2 (μ-OCH 2 R) 4 (μ 3 -OCH 2 R) 2 }{Fe(CO) 4 } 2 ]. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.04.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Yang P, Lin Z, Bassil BS, Alfaro-Espinoza G, Ullrich MS, Li MX, Silvestru C, Kortz U. Tetra-Antimony(III)-Bridged 18-Tungsto-2-Arsenates(V), [(LSb(III))4(A-α-As(V)W9O34)2](10-) (L = Ph, OH): Turning Bioactivity On and Off by Ligand Substitution. Inorg Chem 2016; 55:3718-20. [PMID: 27043954 DOI: 10.1021/acs.inorgchem.6b00107] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two tetra-antimony(III)-bridged, sandwich-type 18-tungsto-2-arsenates(V), [(LSb(III))4(A-α-As(V)W9O34)2](10-) (L = Ph (1), OH (2)), were prepared and fully characterized in the solid state and in solution. Both polyanions are stable in aqueous physiological medium for at least 24 h (at concentrations ≥2.5 × 10(-6) M). Despite the presence of an isostructural tetra-antimony(III) motif in 1 and 2, distinctly different antibacterial activity was observed for both polyanions. The minimum inhibitory concentrations (MIC) of 1 (7.8-62.5 μg/mL) is lower than for any other organoantimony(III)-containing polyoxometalate reported to date.
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Affiliation(s)
- Peng Yang
- Department of Life Sciences and Chemistry, Jacobs University , P.O. Box 750 561, 28725 Bremen, Germany
| | - Zhengguo Lin
- Department of Life Sciences and Chemistry, Jacobs University , P.O. Box 750 561, 28725 Bremen, Germany
| | - Bassem S Bassil
- Department of Life Sciences and Chemistry, Jacobs University , P.O. Box 750 561, 28725 Bremen, Germany.,Department of Chemistry, Faculty of Sciences, University of Balamand , P.O. Box 100, Tripoli, Lebanon
| | - Gabriela Alfaro-Espinoza
- Department of Life Sciences and Chemistry, Jacobs University , P.O. Box 750 561, 28725 Bremen, Germany
| | - Matthias S Ullrich
- Department of Life Sciences and Chemistry, Jacobs University , P.O. Box 750 561, 28725 Bremen, Germany
| | - Ming-Xing Li
- Department of Chemistry, College of Sciences, Shanghai University , Shanghai 200444, People's Republic of China
| | - Cristian Silvestru
- Department of Chemistry, Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University , RO-400028 Cluj-Napoca, Romania
| | - Ulrich Kortz
- Department of Life Sciences and Chemistry, Jacobs University , P.O. Box 750 561, 28725 Bremen, Germany
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Dubován L, Pöllnitz A, Silvestru C. Tri(3‐pyridyl)‐ and Tri(4‐pyridyl)phosphine Chalcogenides and Their Complexes with ZnTPP (TPP = Tetraphenylporphyrinate). Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501333] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Lea Dubován
- Departamentul de Chimie, Centrul de Chimie Supramoleculară Organică şi Organometalică (CCSOOM), Facultatea de Chimie şi Inginerie Chimică, Universitatea Babeş‐Bolyai, Str. Arany Janos 11, Cluj‐Napoca, 400028, Romania http://www.chem.ubbcluj.ro/~ccsoom/organometallic/
| | - Alpár Pöllnitz
- Departamentul de Chimie, Centrul de Chimie Supramoleculară Organică şi Organometalică (CCSOOM), Facultatea de Chimie şi Inginerie Chimică, Universitatea Babeş‐Bolyai, Str. Arany Janos 11, Cluj‐Napoca, 400028, Romania http://www.chem.ubbcluj.ro/~ccsoom/organometallic/
| | - Cristian Silvestru
- Departamentul de Chimie, Centrul de Chimie Supramoleculară Organică şi Organometalică (CCSOOM), Facultatea de Chimie şi Inginerie Chimică, Universitatea Babeş‐Bolyai, Str. Arany Janos 11, Cluj‐Napoca, 400028, Romania http://www.chem.ubbcluj.ro/~ccsoom/organometallic/
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Olaru M, Nema MG, Soran A, Breunig HJ, Silvestru C. Mixed triorganobismuthines RAr2Bi [Ar = C6F5, 2,4,6-(C6F5)3C6H2] and hypervalent racemic Bi-chiral diorganobismuth(iii) bromides RArBiBr (Ar = C6F5, Mes, Ph) with the ligand R = 2-(Me2NCH2)C6H4. Influences of the organic substituent. Dalton Trans 2016; 45:9419-28. [DOI: 10.1039/c5dt05074j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
RAr2Bi and chiral RArBiBr were structurally characterized; N–Bi bond distances in RArBiBr appear to be similar regardless of the electronic properties of the Ar ligand.
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Affiliation(s)
- Marian Olaru
- Departamentul de Chimie
- Centrul de Chimie Supramoleculară Organică şi Organometalică (CCSOOM)
- Facultatea de Chimie şi Inginerie Chimică
- Universitatea Babeş-Bolyai
- 400028 Cluj-Napoca
| | - Mihai G. Nema
- Departamentul de Chimie
- Centrul de Chimie Supramoleculară Organică şi Organometalică (CCSOOM)
- Facultatea de Chimie şi Inginerie Chimică
- Universitatea Babeş-Bolyai
- 400028 Cluj-Napoca
| | - Albert Soran
- Departamentul de Chimie
- Centrul de Chimie Supramoleculară Organică şi Organometalică (CCSOOM)
- Facultatea de Chimie şi Inginerie Chimică
- Universitatea Babeş-Bolyai
- 400028 Cluj-Napoca
| | - Hans J. Breunig
- Institut für Anorganische und Physikalische Chemie
- Universität Bremen
- D-28334 Bremen
- Germany
| | - Cristian Silvestru
- Departamentul de Chimie
- Centrul de Chimie Supramoleculară Organică şi Organometalică (CCSOOM)
- Facultatea de Chimie şi Inginerie Chimică
- Universitatea Babeş-Bolyai
- 400028 Cluj-Napoca
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Yang P, Lin Z, Alfaro-Espinoza G, Ullrich MS, Raţ CI, Silvestru C, Kortz U. 19-Tungstodiarsenate(III) Functionalized by Organoantimony(III) Groups: Tuning the Structure-Bioactivity Relationship. Inorg Chem 2015; 55:251-8. [PMID: 26654226 DOI: 10.1021/acs.inorgchem.5b02189] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A family of three discrete organoantimony(III)-functionalized heteropolyanions-[Na{2-(Me2HN(+)CH2)C6H4Sb(III)}As(III)2W19O67(H2O)](10-) (1), [{2-(Me2HN(+)CH2)C6H4Sb(III)}2As(III)2W19O67(H2O)](8-) (2), and [{2-(Me2HN(+)CH2)C6H4Sb(III)}{WO2(H2O)}{WO(H2O)}2(B-β-As(III)W8O30)(B-α-As(III)W9O33)2](14-) (3)-have been prepared by one-pot reactions of the 19-tungstodiarsenate(III) precursor [As(III)2W19O67(H2O)](14-) with 2-(Me2NCH2)C6H4SbCl2. The three novel polyanions crystallized as the hydrated mixed-alkali salts Cs3KNa6[Na{2-(Me2HN(+)CH2)C6H4Sb(III)}As(III)2W19O67(H2O)]·43H2O (CsKNa-1), Rb2.5K5.5[{2-(Me2HN(+)CH2)C6H4Sb(III)}2As(III)2W19O67(H2O)]·18H2O·Me2NCH2C6H5 (RbK-2), and Rb2.5K11.5[{2-(Me2HN(+)CH2)C6H4Sb(III)}{WO2(H2O)}{WO(H2O)}2(B-β-As(III)W8O30)(B-α-As(III)W9O33)2]·52H2O (RbK-3), respectively. The number of incorporated {2-(Me2HN(+)CH2)C6H4Sb(III)} units could be tuned by careful control of the experimental parameters. Polyanions 1 and 2 possess a dimeric sandwich-type topology, whereas 3 features a trimeric, wheel-shaped structure, representing the largest organoantimony-containing polyanion. All three compounds were fully characterized in the solid state via single-crystal X-ray diffraction (XRD), infrared (IR) spectroscopy, and thermogravimetric analysis, and their aqueous solution stability was validated by ultraviolet-visible light (UV-vis) and multinuclear ((1)H, (13)C, and (183)W) nuclear magnetic resonance (NMR) spectroscopy. Effective inhibition against six different types of bacteria was observed for 1 and 2, and we could extract a structure-bioactivity relationship for these polyanions.
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Affiliation(s)
- Peng Yang
- Department of Life Sciences and Chemistry, Jacobs University , P.O. Box 750 561, 28725 Bremen, Germany
| | - Zhengguo Lin
- Department of Life Sciences and Chemistry, Jacobs University , P.O. Box 750 561, 28725 Bremen, Germany
| | - Gabriela Alfaro-Espinoza
- Department of Life Sciences and Chemistry, Jacobs University , P.O. Box 750 561, 28725 Bremen, Germany
| | - Matthias S Ullrich
- Department of Life Sciences and Chemistry, Jacobs University , P.O. Box 750 561, 28725 Bremen, Germany
| | - Ciprian I Raţ
- Department of Chemistry, Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University , Arany Janos Str. 11, RO-400028 Cluj-Napoca, Romania
| | - Cristian Silvestru
- Department of Chemistry, Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University , Arany Janos Str. 11, RO-400028 Cluj-Napoca, Romania
| | - Ulrich Kortz
- Department of Life Sciences and Chemistry, Jacobs University , P.O. Box 750 561, 28725 Bremen, Germany
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Wang KY, Lin Z, Bassil BS, Xing X, Haider A, Keita B, Zhang G, Silvestru C, Kortz U. Ti2-Containing 18-Tungsto-2-Arsenate(III) Monolacunary Host and the Incorporation of a Phenylantimony(III) Guest. Inorg Chem 2015; 54:10530-2. [PMID: 26492291 DOI: 10.1021/acs.inorgchem.5b01863] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The novel Ti2-containing, sandwich-type 18-tungsto-2-arsenate(III) [(Ti(IV)O)2(α-As(III)W9O33)2](14-) (1) was successfully synthesized by the reaction of [TiO](2+) species with [α-As(III)W9O33](9-). The monolacunary polyanion 1 is solution-stable, and a further reaction with 1 equiv of phenylantimony(III) dichloride resulted in [C6H5Sb(III)(Ti(IV)O)2(α-As(III)W9O33)2](12-) (2). Both polyanions 1 and 2 were structurally characterized in the solid state and solution. Electrochemical studies were also performed on both polyanions.
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Affiliation(s)
- Kai-Yao Wang
- Department of Life Sciences and Chemistry, Jacobs University , P.O. Box 750561, 28725 Bremen, Germany
| | - Zhengguo Lin
- Department of Life Sciences and Chemistry, Jacobs University , P.O. Box 750561, 28725 Bremen, Germany
| | - Bassem S Bassil
- Department of Life Sciences and Chemistry, Jacobs University , P.O. Box 750561, 28725 Bremen, Germany.,Department of Chemistry, Faculty of Sciences, University of Balamand , P.O. Box 100, Tripoli, Lebanon
| | - Xiaolin Xing
- Department of Life Sciences and Chemistry, Jacobs University , P.O. Box 750561, 28725 Bremen, Germany
| | - Ali Haider
- Department of Life Sciences and Chemistry, Jacobs University , P.O. Box 750561, 28725 Bremen, Germany
| | - Bineta Keita
- Laboratoire de Chimie-Physique, Université Paris-Sud, UMR 8000 CNRS , F-91405 Orsay, France
| | - Guangjin Zhang
- Key Laboratory of Green Process and Engineering, Chinese Academy of Sciences , 100190 Beijing, China
| | - Cristian Silvestru
- Department of Chemistry, Supramolecular Organic and Organometallic Chemistry Centre, Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University , RO-400028 Cluj-Napoca, Romania
| | - Ulrich Kortz
- Department of Life Sciences and Chemistry, Jacobs University , P.O. Box 750561, 28725 Bremen, Germany
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44
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Yang P, Bassil BS, Lin Z, Haider A, Alfaro-Espinoza G, Ullrich MS, Silvestru C, Kortz U. Organoantimony(III)-Containing Tungstoarsenates(III): From Controlled Assembly to Biological Activity. Chemistry 2015; 21:15600-6. [PMID: 26368119 DOI: 10.1002/chem.201502398] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Indexed: 11/11/2022]
Abstract
A family of three sandwich-type, phenylantimony(III)-containing tungstoarsenates(III), [(PhSb(III) ){Na(H2 O)}As(III) 2 W19 O67 (H2 O)](11-) (1), [(PhSb(III) )2 As(III) 2 W19 O67 (H2 O)](10-) (2), and [(PhSb(III) )3 (B-α-As(III) W9 O33 )2 ](12-) (3), have been synthesized by one-pot procedures and isolated as hydrated alkali metal salts, Cs3 K3.5 Na4.5 [(PhSb(III) ){Na(H2 O)}As(III) 2 W19 O67 (H2 O)]⋅41H2 O (CsKNa-1), Cs4.5 K5.5 [(PhSb(III) )2 As(III) 2 W19 O67 (H2 O)]⋅35H2 O (CsK-2), and Cs4.5 Na7.5 [(PhSb(III) )3 (B-α-As(III) W9 O33 )2 ]⋅42H2 O (CsNa-3). The number of incorporated {PhSb(III) } units could be selectively tuned from one to three by careful control of the reaction parameters. The three compounds were characterized in the solid state by single-crystal XRD, IR spectroscopy, and thermogravimetric analysis. The aqueous solution stability of sandwich polyanions 1-3 was also studied by multinuclear ((1) H, (13) C, (183) W) NMR spectroscopy. Effective inhibitory activity against six different kinds of bacteria was identified for all three polyanions, for which the activity increased with the number of incorporated {PhSb(III) } groups.
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Affiliation(s)
- Peng Yang
- Department of Life Sciences and Chemistry, Jacobs University, P.O. Box 750 561, 28725 Bremen (Germany)
| | - Bassem S Bassil
- Department of Life Sciences and Chemistry, Jacobs University, P.O. Box 750 561, 28725 Bremen (Germany).,Department of Chemistry, Faculty of Sciences, University of Balamand, P.O. Box 100, Tripoli (Lebanon)
| | - Zhengguo Lin
- Department of Life Sciences and Chemistry, Jacobs University, P.O. Box 750 561, 28725 Bremen (Germany)
| | - Ali Haider
- Department of Life Sciences and Chemistry, Jacobs University, P.O. Box 750 561, 28725 Bremen (Germany)
| | - Gabriela Alfaro-Espinoza
- Department of Life Sciences and Chemistry, Jacobs University, P.O. Box 750 561, 28725 Bremen (Germany)
| | - Matthias S Ullrich
- Department of Life Sciences and Chemistry, Jacobs University, P.O. Box 750 561, 28725 Bremen (Germany)
| | - Cristian Silvestru
- Department of Chemistry, Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, Arany Janos Str. 11, RO-400028 Cluj-Napoca (Romania)
| | - Ulrich Kortz
- Department of Life Sciences and Chemistry, Jacobs University, P.O. Box 750 561, 28725 Bremen (Germany).
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Strîmb G, Pöllnitz A, Raţ CI, Silvestru C. A general route to monoorganopnicogen(III) (M = Sb, Bi) compounds with a pincer (N,C,N) group and oxo ligands. Dalton Trans 2015; 44:9927-42. [PMID: 25941006 DOI: 10.1039/c5dt00603a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The reaction of RMCl2 [R = 2,6-[MeN(CH2CH2)2NCH2]2C6H3; M = Sb (1), Bi (2)] with KOH affords the isolation of the oxides cyclo-R2M2O2 [M = Sb (3), Bi (4)]. Treatment of 3 with trifluoroacetic acid produced an ionic species (5) with a dinuclear cation that contains organic ligands protonated partially at one of the pendant arms. The cyclic oxides 3 and 4 are able to trap gaseous CO2 to give “RMCO3” [M = Sb (6), Bi (7)], the degree of these organometallic carbonates’ oligomerization being under investigation. The reactivity of the dinuclear oxide 3 was also investigated towards oxalic acid or dopamine hydrochloride and pure mononuclear compounds could be isolated, i.e. RSb[O(O)CC(O)O] (8) and RSb[O2-1,2-C6H3-3-(CH2)2NH3]Cl (9). The reaction of the dichlorides 1 and 2 with ethylene glycol, pinacol or catechol, in the presence of KOH, led to 2-organo-1,3,2-dioxastibolanes or -bismolanes RM(OCH2)2 [M = Sb (10), Bi (11)], RM(OCMe2)2 [M = Sb (12), Bi (13)] and 2-organo-1,3,2-dioxastibole or -bismole RM(O2-1,2-C6H4) [M = Sb (14), Bi (15)], respectively. The compounds were investigated by NMR spectroscopy, including variable temperature experiments, providing evidence for the presence of the intramolecular N→M interactions in solution. Single crystal X-ray diffraction studies were performed for most compounds and revealed an organic group R acting as a pincer ligand resulting in a distorted square pyramidal (N,C,N)MO2 core with cis intramolecular N→M interactions placed trans to M–O bonds. This is in contrast to the N→M interactions trans to each other as found in the RMCl2 used as starting materials. The crystals of the oxides 3 and 4·4H2O contain different geometric isomers with anti and syn orientation of the M–C bonds, respectively, with respect to the planar M2O2 ring. In the supramolecular polymeric architecture established in the crystal of 4·4H2O an important finding is the experimental observation of water hexamer units with a [tetramer + 2] structure (water molecules connected to opposite corners of a square water tetramer) fixed between 1D-chains of the type (syn-R2Bi2O2·H2O)n through additional hydrogen bonds to oxygen atoms of the dinuclear organobismuth(III) moieties. Theoretical calculations were carried out on 2–6 and 8–15 in order to gain insight into the stabilization energy produced by intramolecular coordination of the pendant arms, association degrees and formation energies of the organopnicogen compounds with chelating ligands.
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Affiliation(s)
- Gabriela Strîmb
- Departamentul de Chimie, Centrul de Chimie Supramoleculară Organică şi Organometalică (CCSOOM), Facultatea de Chimie şi Inginerie Chimică, Universitatea Babeş-Bolyai, 400028 Cluj-Napoca, Romania.
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Mocanu T, Raţ CI, Maxim C, Shova S, Tudor V, Silvestru C, Andruh M. Bis(4-pyridyl)mercury – a new linear tecton in crystal engineering: coordination polymers and co-crystallization processes. CrystEngComm 2015. [DOI: 10.1039/c5ce00388a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Three new coordination polymers have been obtained using bis(4-pyridyl)mercury (py2Hg) as a spacer: [Cu(Hmea)2(py2Hg)](ClO4)2·2(py2Hg) (1), [Cu2(pa)2(py2Hg)(ClO4)2]·0.5(py2Hg)·H2O (2), and [Cu2(pa)2(py2Hg)2](BF4)2 (3) (Hmea = monoethanolamine; Hpa = propanolamine).
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Affiliation(s)
- Teodora Mocanu
- Inorganic Chemistry Laboratory
- Faculty of Chemistry
- University of Bucharest
- Bucharest, Romania
| | - Ciprian I. Raţ
- Centre of Supramolecular Organic and Organometallic Chemistry (CCSOOM)
- Department of Chemistry
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- Cluj-Napoca, Romania
| | - Catalin Maxim
- Inorganic Chemistry Laboratory
- Faculty of Chemistry
- University of Bucharest
- Bucharest, Romania
| | - Sergiu Shova
- “Petru Poni” Institute of Macromolecular Chemistry
- 700487 Iasi, Romania
| | - Violeta Tudor
- Inorganic Chemistry Laboratory
- Faculty of Chemistry
- University of Bucharest
- Bucharest, Romania
| | - Cristian Silvestru
- Centre of Supramolecular Organic and Organometallic Chemistry (CCSOOM)
- Department of Chemistry
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- Cluj-Napoca, Romania
| | - Marius Andruh
- Inorganic Chemistry Laboratory
- Faculty of Chemistry
- University of Bucharest
- Bucharest, Romania
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47
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Preda AM, Raţ CI, Silvestru C, Lang H, Rüffer T, Mehring M. Hypervalent diorganoantimony(iii) fluorides via diorganoantimony(iii) cations – a general method of synthesis. RSC Adv 2015. [DOI: 10.1039/c5ra21788a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new general synthesis method for hypervalent diorganoantimony(iii) fluorides with pendant arm ligands is based on treatment with [Bu4N]F·3H2O of cationic species e.g. [{2-(2′,6′-iPr2C6H3NCH)C6H4}2Sb]+[PF6]− or [{2-(Me2NCH2)C6H4}PhSb]+[SbF6]−.
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Affiliation(s)
- Ana Maria Preda
- Departamentul de Chimie
- Centrul de Chimie Supramoleculară Organică şi Organometalică (CCSOOM)
- Facultatea de Chimie şi Inginerie Chimică
- Universitatea Babeş-Bolyai
- 400028 Cluj-Napoca
| | - Ciprian I. Raţ
- Departamentul de Chimie
- Centrul de Chimie Supramoleculară Organică şi Organometalică (CCSOOM)
- Facultatea de Chimie şi Inginerie Chimică
- Universitatea Babeş-Bolyai
- 400028 Cluj-Napoca
| | - Cristian Silvestru
- Departamentul de Chimie
- Centrul de Chimie Supramoleculară Organică şi Organometalică (CCSOOM)
- Facultatea de Chimie şi Inginerie Chimică
- Universitatea Babeş-Bolyai
- 400028 Cluj-Napoca
| | - Heinrich Lang
- Institut für Chemie
- Technische Universität Chemnitz
- Anorganische Chemie
- D-09111 Chemnitz
- Germany
| | - Tobias Rüffer
- Institut für Chemie
- Technische Universität Chemnitz
- Anorganische Chemie
- D-09111 Chemnitz
- Germany
| | - Michael Mehring
- Institut für Chemie
- Technische Universität Chemnitz
- Koordinationschemie
- D-09111 Chemnitz
- Germany
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Şolea AB, Olaru M, Silvestru C, Raţ CI. Synthesis and structural characterization of substituted phenols with a m-terphenyl backbone 2,4,6-R3C6H2OH (R=2,4,6-Me3C6H2, Me5C6). Zeitschrift für Naturforschung B 2014. [DOI: 10.1515/znb-2014-0180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Substituted phenols with a m-terphenyl backbone 2,4,6-R3C6H2OH [R=2,4,6-Me3C6H2 (1), Me5C6 (2)] were synthesized using Kumada cross-coupling reactions between 2,4,6-I3C6H2OH and the corresponding Grignard reagent. Both compounds were structurally characterized in solution by 1H and 13C NMR spectroscopy and HRMS. The molecular structures of 1 and 2 were determined by single-crystal X-ray diffraction.
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Affiliation(s)
- Atena B. Şolea
- Centre of Supramolecular Organic and Organometallic Chemistry, Faculty of Chemistry and Chemical Engineering, Department of Chemistry, Babeş-Bolyai University, 11 Arany Janos Street, 400028 Cluj-Napoca, Romania
| | - Marian Olaru
- Centre of Supramolecular Organic and Organometallic Chemistry, Faculty of Chemistry and Chemical Engineering, Department of Chemistry, Babeş-Bolyai University, 11 Arany Janos Street, 400028 Cluj-Napoca, Romania
| | - Cristian Silvestru
- Centre of Supramolecular Organic and Organometallic Chemistry, Faculty of Chemistry and Chemical Engineering, Department of Chemistry, Babeş-Bolyai University, 11 Arany Janos Street, 400028 Cluj-Napoca, Romania
| | - Ciprian I. Raţ
- Centre of Supramolecular Organic and Organometallic Chemistry, Faculty of Chemistry and Chemical Engineering, Department of Chemistry, Babeş-Bolyai University, 11 Arany Janos Street, 400028 Cluj-Napoca, Romania
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Balázsa L, Breunig HJ, Silvestru C, Varga R. Synthese und Kristallstruktur von meso- R(Ph)Sb-Sb(Ph)R [R = (Me3Si)2CH] / Synthesis and Crystal Structure of meso- R(Ph)Sb-Sb(Ph)R [R = (Me3Si)2CH]. Zeitschrift für Naturforschung B 2014. [DOI: 10.1515/znb-2005-1218] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
R(Ph)Sb-Sb(Ph)R (1) [R = (Me3Si)2CH] is formed by reduction of Ph(R)SbCl with Mg. The meso-diastereomer of 1 has been characterised by X-ray crystallography. It adopts an antiperiplanar conformation in the solid state.
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Affiliation(s)
- Lucia Balázsa
- Institut für Anorganische und Physikalische Chemie, Universität Bremen, D-28334 Bremen, Germany
| | - Hans Joachim Breunig
- Institut für Anorganische und Physikalische Chemie, Universität Bremen, D-28334 Bremen, Germany
| | - Cristian Silvestru
- Facultatea de Chimie si Inginiere Chimica, Universitatea Babes-Bolyai, RO-400028 Cluj-Napoca, Romania
| | - Richard Varga
- Facultatea de Chimie si Inginiere Chimica, Universitatea Babes-Bolyai, RO-400028 Cluj-Napoca, Romania
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50
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Copolovici D, Isaia F, Breunig HJ, Raţ CI, Silvestru C. Palladium(ii) complexes with chiral organoantimony(iii) ligands. Solution behaviour and solid state structures. RSC Adv 2014. [DOI: 10.1039/c4ra03482a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The stibines R(Ph)SbCl (1) and R(Mes)2Sb (2) (R = 2-Me2NCH2C6H4) were used to obtain [Me2NHCH2C6H5]+[PdCl3{SbCl(Ph)R}]¬ (3) and [PdCl2{Sb(Mes)2R-N,Sb}] (4). While in 3 the intramolecular N→Sb interaction is preserved, in compound 4 the stibine 2 acts as a (N,Sb)-chelating ligand.
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Affiliation(s)
- Dana Copolovici
- Departamentul de Chimie, Centrul de Chimie Supramoleculară Organică şi Organometalică (CCSOOM)
- Facultatea de Chimie şi Inginerie Chimică
- Universitatea Babeş-Bolyai
- Cluj-Napoca, Romania
| | - Francesco Isaia
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato (CA), Italy
| | - Hans J. Breunig
- Institut für Anorganische und Physikalische Chemie
- Universität Bremen
- 28334 Bremen, Germany
| | - Ciprian I. Raţ
- Departamentul de Chimie, Centrul de Chimie Supramoleculară Organică şi Organometalică (CCSOOM)
- Facultatea de Chimie şi Inginerie Chimică
- Universitatea Babeş-Bolyai
- Cluj-Napoca, Romania
| | - Cristian Silvestru
- Departamentul de Chimie, Centrul de Chimie Supramoleculară Organică şi Organometalică (CCSOOM)
- Facultatea de Chimie şi Inginerie Chimică
- Universitatea Babeş-Bolyai
- Cluj-Napoca, Romania
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