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Campagnolo F, Aneggi E, Baratta W, Munir T, Zuccaccia D. Diffusion Nuclear Magnetic Resonance Measurements on Cationic Gold (I) Complexes in Catalytic Conditions: Counterion and Solvent Effects. Molecules 2024; 29:3018. [PMID: 38998970 PMCID: PMC11243661 DOI: 10.3390/molecules29133018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 06/18/2024] [Accepted: 06/20/2024] [Indexed: 07/14/2024] Open
Abstract
The amount of free ions, ion pairs, and higher aggregate of the possible species present in a solution during the gold(I)-catalyzed alkoxylation of unsaturated hydrocarbon, i.e., ISIP (inner sphere ion pair) [(NHC)AuX] and OSIP (outer sphere ion pairs) [(NHC)Au(TME)X] [NHC 1,3-bis(2,6-di-isopropylphenyl)-imidazol-2-ylidene; TME = tetramethylethylene (2,3-bis methyl-butene); X- = Cl-, BF4-, OTf-; and OTs- BArF4- (ArF = 3,5-(CF3)2C6H3)], has been determined. The 1H and 19F DOSY NMR measurements conducted in catalytic conditions indicate that the dissociation degree (α) of the equilibrium ion pair/free ions {[(NHC)Au(TME)X] [(NHC)Au(TME)]+ + X-} depends on the nature of the counterion (X-) when chloroform is the catalytic solvent: while the compounds containing OTs- and OTf- as the counterion gave a low α (which means a high number of ion pairs) of 0.13 and 0.24, respectively, the compounds containing BF4- and BArF4- showed higher α values of 0.36 and 0.32, respectively. These results experimentally confirm previous deductions based on catalytic and theoretical data: the lower the α value, the greater the catalytic activity because the anion that can activate methanol during a nucleophilic attack, although the lower propensity to activate methanol of BF4- and BArF4-, as suggested by the DFT calculations, cannot be completely overlooked. As for the effect of the solvent, α increases as the dielectric constant increases, as expected, and in particular, green solvents with high dielectric constants show a very high α (0.90, 0.84, 0.80, and 0.70 for propylene carbonate, γ-valerolactone, acetone, and methanol, respectively), thus confirming that the moderately high activity of NHC-Au-OTf in these solvents is due to the specific effect of polar functionalities (O-H, C=O, O-R) in activating methanol. Finally, the DOSY measurements conducted in p-Cymene show the formation of quadrupole species: under these conditions, the anion can better exercise its 'template' and 'activating' roles, giving the highest TOF.
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Affiliation(s)
- Filippo Campagnolo
- Dipartimento di Scienze Agroalimentari, Ambientali e Animali, Sezione di Chimica, Università di Udine, Via Cotonificio 108, I-33100 Udine, Italy
| | - Eleonora Aneggi
- Dipartimento di Scienze Agroalimentari, Ambientali e Animali, Sezione di Chimica, Università di Udine, Via Cotonificio 108, I-33100 Udine, Italy
| | - Walter Baratta
- Dipartimento di Scienze Agroalimentari, Ambientali e Animali, Sezione di Chimica, Università di Udine, Via Cotonificio 108, I-33100 Udine, Italy
| | - Talha Munir
- Dipartimento di Scienze Agroalimentari, Ambientali e Animali, Sezione di Chimica, Università di Udine, Via Cotonificio 108, I-33100 Udine, Italy
| | - Daniele Zuccaccia
- Dipartimento di Scienze Agroalimentari, Ambientali e Animali, Sezione di Chimica, Università di Udine, Via Cotonificio 108, I-33100 Udine, Italy
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Gao Y, Christianson MD, Wang Y, Coons MP, Chen J, Zhang J, Marshall S, Lohr TL, Klosin J, Marks TJ. Alkane-Soluble Bis[tris(alkylphenyl)carbenium] Diborate Cocatalyst for Olefin Polymerizations. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yanshan Gao
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Matthew D. Christianson
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Yang Wang
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Marc P. Coons
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Jiazhen Chen
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Jialong Zhang
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Steve Marshall
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Tracy L. Lohr
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Jerzy Klosin
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Tobin J. Marks
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, United States
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Zeghouan O, Mahesha, Sellami S, Kashi I, Bouchameni C, Lokanath N. Analysis of structural conformation and supramolecular self-assembly of novel oxalate-bridged tetranuclear Cu(II) complex by combined crystallographic and computational studies. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Baykov SV, Mikherdov AS, Novikov AS, Geyl KK, Tarasenko MV, Gureev MA, Boyarskiy VP. π-π Noncovalent Interaction Involving 1,2,4- and 1,3,4-Oxadiazole Systems: The Combined Experimental, Theoretical, and Database Study. Molecules 2021; 26:5672. [PMID: 34577142 PMCID: PMC8466036 DOI: 10.3390/molecules26185672] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 09/13/2021] [Accepted: 09/15/2021] [Indexed: 11/17/2022] Open
Abstract
A series of N-pyridyl ureas bearing 1,2,4- (1a, 2a, and 3a) and 1,3,4-oxadiazole moiety (1b, 2b, 3b) was prepared and characterized by HRMS, 1H and 13C NMR spectroscopy, as well as X-ray diffraction. The inspection of the crystal structures of (1-3)a,b and the Hirshfeld surface analysis made possible the recognition of the (oxadiazole)···(pyridine) and (oxadiazole)···(oxadiazole) interactions. The presence of these interactions was confirmed theoretically by DFT calculations, including NCI analysis for experimentally determined crystal structures as well as QTAIM analysis for optimized equilibrium structures. The preformed database survey allowed the verification of additional examples of relevant (oxadiazole)···π interactions both in Cambridge Structural Database and in Protein Data Bank, including the cocrystal of commercial anti-HIV drug Raltegravir.
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Affiliation(s)
- Sergey V. Baykov
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russia; (S.V.B.); (A.S.M.); (A.S.N.); (K.K.G.)
| | - Alexander S. Mikherdov
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russia; (S.V.B.); (A.S.M.); (A.S.N.); (K.K.G.)
| | - Alexander S. Novikov
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russia; (S.V.B.); (A.S.M.); (A.S.N.); (K.K.G.)
| | - Kirill K. Geyl
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russia; (S.V.B.); (A.S.M.); (A.S.N.); (K.K.G.)
| | - Marina V. Tarasenko
- Pharmaceutical Technology Transfer Centre, Yaroslavl State Pedagogical University Named after K.D. Ushinsky, 108 Respublikanskaya St., 150000 Yaroslavl, Russia;
| | - Maxim A. Gureev
- Research Center “Digital Biodesign and Personalized Healthcare”, I.M. Sechenov First Moscow State Medical University, 119991 Moscow, Russia;
| | - Vadim P. Boyarskiy
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russia; (S.V.B.); (A.S.M.); (A.S.N.); (K.K.G.)
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Gloriozov IP, Dem'yanov PI, Zhulyaev NS, Nechaev MS, Oprunenko YF, Gam F, Saillard JY, Kuznetsov AE. DFT Investigation of the η 6 ⇌ η 6-Inter-ring Haptotropic Rearrangement of the Group 8 Metals Complexes [(graphene)MCp] + (M = Fe, Ru, Os). J Phys Chem A 2021; 125:366-375. [PMID: 33356252 DOI: 10.1021/acs.jpca.0c08251] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Metalcyclopentadienyl complexes (MCp)+ (M = Fe, Ru, Os) bound to the large polyaromatic hydrogenated hydrocarbon (PAH) C96H24 used as a model for pristine graphene have been studied using a density functional theory (DFT) generalized gradient approximation (PBE functional) to reveal their structural features and dynamic behavior. The inter-ring haptotropic rearrangements (IRHRs) for these complexes were shown to occur via two transition states and one intermediate. The energy barriers of the η6 ⇌ η6 IRHRs of the (MCp)+ unit were found to be 30, 27, and 29 kcal/mol for M = Fe, Ru, and Os, respectively. These values are significantly lower than the values found previously for smaller PAHs. Both polar and nonpolar solvents were found not to affect significantly the energy barrier heights. Investigated transition metal complexes could be used in general as catalysts in the design of novel derivatives or materials with promising properties. Metalcyclopentadienyl complexes (MCp)+ of PAHs show catalytic properties mainly due to their structural details as well as their important characteristic of inter-ring haptotropic rearrangement. IRHRs take place usually by intramolecular mechanisms. During IRHRs, the MLn organometallic groups (OMGs) undergo shifting along the PAH plane and could coordinate additional reagents, which is important for catalysis. Large PAHs such as graphene, fullerenes, and nanotubes possess intrinsic anticancer activity, and numerous arene complexes of Ru and Os have been proven to have anticancer properties as well. We suppose that coordinating Ru or Os to very large PAHs could synergistically increase the anticancer activity of resulting complexes.
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Affiliation(s)
- Igor P Gloriozov
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Building 3, 119991 Moscow, Russia
| | - Piotr I Dem'yanov
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Building 3, 119991 Moscow, Russia
| | - Nikolay S Zhulyaev
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Building 3, 119991 Moscow, Russia
| | - Mikhail S Nechaev
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Building 3, 119991 Moscow, Russia.,A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Prospect 29, 119991 Moscow, Russia
| | - Yuri F Oprunenko
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Building 3, 119991 Moscow, Russia
| | - Franck Gam
- ISCR-UMR 6226, Université Rennes, CNRS, F-35000 Rennes, France
| | | | - Aleksey E Kuznetsov
- Department of Chemistry, Universidad Técnica Federico Santa Maria, Av. Santa Maria 6400, Vitacura, 7660251 Santiago, Chile
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Zuccaccia D, Pinalli R, De Zorzi R, Semeraro M, Credi A, Zuccaccia C, Macchioni A, Geremia S, Dalcanale E. Hierarchical self-assembly and controlled disassembly of a cavitand-based host–guest supramolecular polymer. Polym Chem 2021. [DOI: 10.1039/d0py01483d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two hierarchical aggregation modes of cavitand-based supramolecular polymers allow implementing orthogonal disassembly procedures: electrochemical reduction for linear chains and solvent-driven dissolution for bundles.
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Affiliation(s)
- Daniele Zuccaccia
- Dipartimento di Scienze Agroalimentari Ambientali e Animali
- Università di Udine
- 33100 Udine
- Italy
| | - Roberta Pinalli
- Dipartimento di Scienze Chimiche
- della Vita e della Sostenibilità Ambientale and Unità INSTM
- UdR Parma
- Università di Parma
- 43124 Parma
| | - Rita De Zorzi
- Dipartimento di Scienze Chimiche e Farmaceutiche
- Università di Trieste
- 34127 Trieste
- Italy
| | - Monica Semeraro
- Dipartimento di Chimica Industriale “Toso Montanari”
- Università di Bologna
- 40136 Bologna
- Italy
| | - Alberto Credi
- Dipartimento di Chimica Industriale “Toso Montanari”
- Università di Bologna
- 40136 Bologna
- Italy
| | - Cristiano Zuccaccia
- Dipartimento Chimica
- Biologia e Biotecnologia and CIRCC
- Università di Perugia
- 06123 Perugia
- Italy
| | - Alceo Macchioni
- Dipartimento Chimica
- Biologia e Biotecnologia and CIRCC
- Università di Perugia
- 06123 Perugia
- Italy
| | - Silvano Geremia
- Dipartimento di Scienze Chimiche e Farmaceutiche
- Università di Trieste
- 34127 Trieste
- Italy
| | - Enrico Dalcanale
- Dipartimento di Scienze Chimiche
- della Vita e della Sostenibilità Ambientale and Unità INSTM
- UdR Parma
- Università di Parma
- 43124 Parma
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Martı Nez-Alonso M, Sanz P, Ortega P, Espino G, Jalón FA, Martín M, Rodrı Guez AM, López JA, Tejel C, Manzano BR. Analysis of Ion Pairing in Solid State and Solution in p-Cymene Ruthenium Complexes. Inorg Chem 2020; 59:14171-14183. [PMID: 32930592 DOI: 10.1021/acs.inorgchem.0c01951] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The importance of ion pairing in different fields of chemistry is widely recognized. In this work, we have synthesized a set of cationic p-cymene ruthenium complexes of general formula [(p-cym)Ru(L')(κ2-O^N-L)]X (p-cym = p-cymene; L' = N-methylimidazole (MeIm), N-ethylpiperidylimidazole (EpipIm), 1,3,5-triaza-7-phosphaadamantane (PTA); L = 2-(1H-benzimidazol-2-yl)phenolato (L1), 2-(1,3-benzothiazol-2-yl)phenolato (L2); X = Cl-, BF4-, OTf-, BPh4-). X-ray diffraction studies on selected complexes revealed relatively strong anion-cation interactions in the solid state mainly based on N-H···X (X = Cl, F, O) and C-H···π interactions, also observed in the DFT-modeled complexes in the gas phase. Moreover, NMR studies showed that they exist as intimate ion pairs in solution and, remarkably, as head-to-tail quadruples in the particular case of the cation [(p-cym)Ru(MeIm)(κ2- O^N-L1)]+ ([1]+) with Cl- and BPh4- as counteranions. Furthermore, a value of ΔG = -2.9 kcal mol-1 at 299 K has been estimated for the equilibrium {[1]BPh4···[1]BPh4} ⇆ 2{[1]+···BPh4-} in concentrated CDCl3 solutions. In addition, preliminary studies concerning the cytotoxic properties against HeLa cell lines of the derivatives suggested a positive effect derived from the presence of the lipophilic BPh4- anion and also from the NH group of the benzimidazolyl fragment.
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Affiliation(s)
- Marta Martı Nez-Alonso
- University de Burgos. Departamento de Química, Facultad de Ciencias, Plaza Misael Bañuelos s. n., 09001-Burgos, Spain
| | - Pedro Sanz
- University de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica, CRIB, Fac. de Ciencias y Tecnologías Químicas, Avda. C. J. Cela, 10, 13071-Ciudad Real, Spain
| | - Paula Ortega
- University de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica, CRIB, Fac. de Ciencias y Tecnologías Químicas, Avda. C. J. Cela, 10, 13071-Ciudad Real, Spain
| | - Gustavo Espino
- University de Burgos. Departamento de Química, Facultad de Ciencias, Plaza Misael Bañuelos s. n., 09001-Burgos, Spain
| | - Félix A Jalón
- University de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica, CRIB, Fac. de Ciencias y Tecnologías Químicas, Avda. C. J. Cela, 10, 13071-Ciudad Real, Spain
| | - Mairena Martín
- University de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica, CRIB, Fac. de Ciencias y Tecnologías Químicas, Avda. C. J. Cela, 10, 13071-Ciudad Real, Spain
| | - Ana M Rodrı Guez
- University de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica, IRICA, Escuela Técnica Superior de Ingenieros Industriales, Avda. C. J. Cela, 3, 13071-Ciudad Real, Spain
| | - José A López
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009-Zaragoza, Spain
| | - Cristina Tejel
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009-Zaragoza, Spain
| | - Blanca R Manzano
- University de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica, CRIB, Fac. de Ciencias y Tecnologías Químicas, Avda. C. J. Cela, 10, 13071-Ciudad Real, Spain
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Curing Behaviors of Alkynyl-Terminated Copolyether with Glycidyl Azide Polymer in Energetic Plasticizers. Polymers (Basel) 2020; 12:polym12051199. [PMID: 32466122 PMCID: PMC7284753 DOI: 10.3390/polym12051199] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 04/24/2020] [Accepted: 04/28/2020] [Indexed: 12/24/2022] Open
Abstract
Alkynyl-terminated polyethylene oxide−tetrahydrofuran (ATPET) and glycidyl azide polymer (GAP) could be linked through click-chemistry between the alkynyl and azide, and the product may serve a binder for solid propellants. The effects of the energetic plasticizers A3 [1:1 mixture of bis-(2,2-dinitropropy) acetal (BDNPA) and bis-(2,2-dinitropropyl) formal(BDNPN)] and Bu-NENA [N-butyl-N-(2nitroxyethyl) nitramine] on the curing reaction between ATPET and GAP have been studied. A diffusion-ordered nuclear magnetic resonance spectroscopy (DOSY-NMR) approach has been used to monitor the change in the diffusion coefficient of cross-linked polytriazole polyethylene oxide−tetrahydrofuran (PTPET). The change in the diffusion coefficient of PTPET with A3 plasticizer is significantly higher than that of PTPET with Bu-NENA. Viscosity analysis further highlighted the difference between A3 and Bu-NENA in the curing process—the curing curve of PTPET (A3) with time can be divided into two stages, with an inflection point being observed on the fourth day. For PTPET (Bu-NENA), in contrast, only one stage is seen. The above methods, together with gel permeation chromatography (GPC) analysis, revealed distinct effects of A3 and Bu-NENA on the curing process of PTPET. X-ray Photoelectron Spectroscopy (XPS) analysis showed that Bu-NENA has little effect on the valence oxidation of copper in the catalyst. Thermogravimetric (TG) analysis indicated that Bu-NENA helps to improve the thermal stability of the catalyst. After analysis of several possible factors by means of XPS, modeling with Material Studio and TG, the formation of molecular cages between Bu-NENA and copper is considered to be the reason for the above differences. In this article, GAP (Mn = 4000 g/mol) was used to replace GAP (Mn = 427 g/mol) to successfully synthesize the PTPET elastomer with Bu-NENA plasticizer. Mechanical data measured for the PTPET (Bu-NENA) sample included ε = 34.26 ± 2.98%, and σ = 0.198 ± 0.015 MPa.
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Zaccaria F, Sian L, Zuccaccia C, Macchioni A. Ion pairing in transition metal catalyzed olefin polymerization. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2020. [DOI: 10.1016/bs.adomc.2019.08.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Sian L, Macchioni A, Zuccaccia C. Understanding the Role of Metallocenium Ion-Pair Aggregates on the Rate of Olefin Insertion into the Metal–Carbon Bond. ACS Catal 2019. [DOI: 10.1021/acscatal.9b04929] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Leonardo Sian
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia and CIRCC, Via Elce di Sotto 8, 06123 Perugia, Italy
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Alceo Macchioni
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia and CIRCC, Via Elce di Sotto 8, 06123 Perugia, Italy
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Cristiano Zuccaccia
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia and CIRCC, Via Elce di Sotto 8, 06123 Perugia, Italy
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
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Sian L, Guerriero A, Peruzzini M, Zuccaccia C, Gonsalvi L, Macchioni A. Diffusion NMR Studies on the Self-Aggregation of Ru-Arene CAP Complexes: Evidence for the Formation of H-Bonded Dicationic Species in Acetonitrile. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00703] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Leonardo Sian
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Antonella Guerriero
- Consiglio Nazionale delle Ricerche (CNR), Istituto di Chimica dei Composti OrganoMetallici (ICCOM), Via Madonna del Piano 10, 50019 Sesto Fiorentino (Florence), Italy
| | - Maurizio Peruzzini
- Consiglio Nazionale delle Ricerche (CNR), Istituto di Chimica dei Composti OrganoMetallici (ICCOM), Via Madonna del Piano 10, 50019 Sesto Fiorentino (Florence), Italy
- Consiglio Nazionale delle Ricerche (CNR), Dipartimento di Scienze Chimiche e Tecnologia dei Materiali (DSCTM), Via dei Taurini 19, 00185 Rome, Italy
| | - Cristiano Zuccaccia
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Luca Gonsalvi
- Consiglio Nazionale delle Ricerche (CNR), Istituto di Chimica dei Composti OrganoMetallici (ICCOM), Via Madonna del Piano 10, 50019 Sesto Fiorentino (Florence), Italy
| | - Alceo Macchioni
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
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Zaccaria F, Zuccaccia C, Cipullo R, Budzelaar PHM, Macchioni A, Busico V, Ehm C. On the Nature of the Lewis Acidic Sites in “TMA‐Free” Phenol‐Modified Methylaluminoxane. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201901035] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Francesco Zaccaria
- Dipartimento di Scienze Chimiche Università di Napoli Federico II Via Cintia 80126 Napoli Italy
- Dipartimento di Chimica Biologia e Biotecnologie and CIRCC Università di Perugia Via Elce di Sotto 8 06123 Perugia Italy
| | - Cristiano Zuccaccia
- Dipartimento di Chimica Biologia e Biotecnologie and CIRCC Università di Perugia Via Elce di Sotto 8 06123 Perugia Italy
| | - Roberta Cipullo
- Dipartimento di Scienze Chimiche Università di Napoli Federico II Via Cintia 80126 Napoli Italy
| | - Peter H. M. Budzelaar
- Dipartimento di Scienze Chimiche Università di Napoli Federico II Via Cintia 80126 Napoli Italy
| | - Alceo Macchioni
- Dipartimento di Chimica Biologia e Biotecnologie and CIRCC Università di Perugia Via Elce di Sotto 8 06123 Perugia Italy
| | - Vincenzo Busico
- Dipartimento di Scienze Chimiche Università di Napoli Federico II Via Cintia 80126 Napoli Italy
| | - Christian Ehm
- Dipartimento di Scienze Chimiche Università di Napoli Federico II Via Cintia 80126 Napoli Italy
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Zaccaria F, Zuccaccia C, Cipullo R, Macchioni A. Extraction of Reliable Molecular Information from Diffusion NMR Spectroscopy: Hydrodynamic Volume or Molecular Mass? Chemistry 2019; 25:9930-9937. [PMID: 30998838 DOI: 10.1002/chem.201900812] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Indexed: 01/31/2023]
Abstract
Measuring accurate translational self-diffusion coefficients (Dt ) by NMR techniques with modern spectrometers has become rather routine. In contrast, the derivation of reliable molecular information therefrom still remains a nontrivial task. In this paper, two established approaches to estimating molecular size in terms of hydrodynamic volume (VH ) or molecular weight (M) are compared. Ad hoc designed experiments allowed the critical aspects of their application to be explored by translating relatively complex theoretical principles into practical take-home messages. For instance, comparing the Dt values of three isosteric Cp2 MCl2 complexes (Cp=cyclopentadienyl, M=Ti, Zr, Hf), having significantly different molecular mass, provided an empirical demonstration that VH is the critical molecular property affecting Dt . This central concept served to clarify the assumptions behind the derivation of Dt =ƒ(M) power laws from the Stokes-Einstein equation. Some pitfalls in establishing log (Dt ) versus log (M) linear correlations for a set of species have been highlighted by further investigations of selected examples. The effectiveness of the Stokes-Einstein equation itself in describing the aggregation or polymerization of differently shaped species has been explored by comparing, for example, a ball-shaped silsesquioxane cage with its cigar-like dimeric form, or styrene with polystyrene macromolecules.
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Affiliation(s)
- Francesco Zaccaria
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università di Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy
| | - Cristiano Zuccaccia
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università di Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy
| | - Roberta Cipullo
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126, Napoli, Italy
| | - Alceo Macchioni
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università di Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy
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14
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Zaccaria F, Zuccaccia C, Cipullo R, Budzelaar PHM, Macchioni A, Busico V, Ehm C. BHT-Modified MAO: Cage Size Estimation, Chemical Counting of Strongly Acidic Al Sites, and Activation of a Ti-Phosphinimide Precatalyst. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00076] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Francesco Zaccaria
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Cristiano Zuccaccia
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Roberta Cipullo
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Peter H. M. Budzelaar
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Alceo Macchioni
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Vincenzo Busico
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Christian Ehm
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
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15
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Gao Y, Chen J, Wang Y, Pickens DB, Motta A, Wang QJ, Chung YW, Lohr TL, Marks TJ. Highly branched polyethylene oligomers via group IV-catalysed polymerization in very nonpolar media. Nat Catal 2019. [DOI: 10.1038/s41929-018-0224-0] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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16
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Mikherdov AS, Novikov AS, Kinzhalov MA, Boyarskiy VP, Starova GL, Ivanov AY, Kukushkin VY. Halides Held by Bifurcated Chalcogen–Hydrogen Bonds. Effect of μ(S,N–H)Cl Contacts on Dimerization of Cl(carbene)PdII Species. Inorg Chem 2018; 57:3420-3433. [DOI: 10.1021/acs.inorgchem.8b00190] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alexander S. Mikherdov
- Saint Petersburg State University, 7/9 Universitetskaya Nab., Saint Petersburg 199034, Russian Federation
| | - Alexander S. Novikov
- Saint Petersburg State University, 7/9 Universitetskaya Nab., Saint Petersburg 199034, Russian Federation
| | - Mikhail A. Kinzhalov
- Saint Petersburg State University, 7/9 Universitetskaya Nab., Saint Petersburg 199034, Russian Federation
| | - Vadim P. Boyarskiy
- Saint Petersburg State University, 7/9 Universitetskaya Nab., Saint Petersburg 199034, Russian Federation
| | - Galina L. Starova
- Saint Petersburg State University, 7/9 Universitetskaya Nab., Saint Petersburg 199034, Russian Federation
| | - Alexander Yu. Ivanov
- Saint Petersburg State University, 7/9 Universitetskaya Nab., Saint Petersburg 199034, Russian Federation
| | - Vadim Yu. Kukushkin
- Saint Petersburg State University, 7/9 Universitetskaya Nab., Saint Petersburg 199034, Russian Federation
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17
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Characterization of Halogen Bonded Adducts in Solution by Advanced NMR Techniques. MAGNETOCHEMISTRY 2017. [DOI: 10.3390/magnetochemistry3040030] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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18
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Orbelli Biroli A, Tessore F, Righetto S, Forni A, Macchioni A, Rocchigiani L, Pizzotti M, Di Carlo G. Intriguing Influence of -COOH-Driven Intermolecular Aggregation and Acid-Base Interactions with N,N-Dimethylformamide on the Second-Order Nonlinear-Optical Response of 5,15 Push-Pull Diarylzinc(II) Porphyrinates. Inorg Chem 2017; 56:6438-6450. [PMID: 28475347 DOI: 10.1021/acs.inorgchem.7b00510] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A series of 5,15 push-pull meso-diarylzinc(II) porphyrinates, carrying one or two -COOH or -COOCH3 acceptor groups and a -OCH3 or a -N(CH3)2 donor group, show in N,N-dimethylformamide and CHCl3 solutions a negative and solvent-dependent second-order nonlinear-optical (NLO) response measured by the electric-field-induced second-harmonic generation (EFISH) technique, different from the structurally related zinc(II) porphyrinate carrying a -N(CH3)2 donor group and a -NO2 acceptor group, where a still solvent-dependent but positive EFISH second-order response was previously reported. Moreover, when a -N(CH3)2 donor group and a -COOH acceptor group are part of a sterically hindered 2,12 push-pull β-pyrrolic-substituted tetraarylzinc(II) porphyrinate, the EFISH response is positive and solvent-independent. In order to rationalize these rather intriguing series of observations, EFISH measurements have been integrated by electronic absorption and IR spectroscopic investigations and by density functional theory (DFT) and coupled-perturbed DFT theoretical and 1H pulsed-gradient spin-echo NMR investigations, which prompt that the significant concentration effects and the strong influence of the solvent nature on the NLO response are originated by a complex whole of different aggregation processes induced by the -COOH group.
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Affiliation(s)
- Alessio Orbelli Biroli
- Istituto di Scienze e Tecnologie Molecolari del CNR (CNR-ISTM), SmartMatLab Centre, via C. Golgi 19, 20133 Milano, Italy
| | - Francesca Tessore
- Dipartimento di Chimica, Unità di Ricerca dell'INSTM, Università degli Studi di Milano , via C. Golgi 19, 20133 Milano, Italy
| | - Stefania Righetto
- Dipartimento di Chimica, Unità di Ricerca dell'INSTM, Università degli Studi di Milano , via C. Golgi 19, 20133 Milano, Italy
| | - Alessandra Forni
- Istituto di Scienze e Tecnologie Molecolari del CNR (CNR-ISTM), SmartMatLab Centre, via C. Golgi 19, 20133 Milano, Italy
| | - Alceo Macchioni
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università degli Studi di Perugia , via Elce di Sotto 8, 06123 Perugia, Italy
| | - Luca Rocchigiani
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università degli Studi di Perugia , via Elce di Sotto 8, 06123 Perugia, Italy.,School of Chemistry, University of East Anglia , Norwich Research Park, Norwich, NR4 7TJ, United Kingdom
| | - Maddalena Pizzotti
- Dipartimento di Chimica, Unità di Ricerca dell'INSTM, Università degli Studi di Milano , via C. Golgi 19, 20133 Milano, Italy
| | - Gabriele Di Carlo
- Dipartimento di Chimica, Unità di Ricerca dell'INSTM, Università degli Studi di Milano , via C. Golgi 19, 20133 Milano, Italy
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19
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Pregosin PS. Applications of NMR diffusion methods with emphasis on ion pairing in inorganic chemistry: a mini-review. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2017; 55:405-413. [PMID: 26888228 DOI: 10.1002/mrc.4394] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 11/05/2015] [Accepted: 11/11/2015] [Indexed: 06/05/2023]
Abstract
This mini-review provides a brief overview of the use of NMR diffusion methods in connection with estimating molecular weights in solution, recognizing hydrogen bonding and encapsulation processes and, primarily, identifying and estimating the varying degrees of ion pairing. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Paul S Pregosin
- Laboratorium für Anorganische Chemie, ETHZ HCI, Hönggerberg, CH-8093, Zürich, Switzerland
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20
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Aldrich KE, Billow BS, Holmes D, Bemowski RD, Odom AL. Weakly Coordinating yet Ion Paired: Anion Effects on an Internal Rearrangement. Organometallics 2017. [DOI: 10.1021/acs.organomet.6b00839] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kelly E. Aldrich
- Department of Chemistry, Michigan State University, 578 South Shaw Lane, East
Lansing, Michigan 48824, United States
| | - Brennan S. Billow
- Department of Chemistry, Michigan State University, 578 South Shaw Lane, East
Lansing, Michigan 48824, United States
| | - Daniel Holmes
- Department of Chemistry, Michigan State University, 578 South Shaw Lane, East
Lansing, Michigan 48824, United States
| | - Ross D. Bemowski
- Department of Chemistry, Michigan State University, 578 South Shaw Lane, East
Lansing, Michigan 48824, United States
| | - Aaron L. Odom
- Department of Chemistry, Michigan State University, 578 South Shaw Lane, East
Lansing, Michigan 48824, United States
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21
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Barbazanges M, Caytan E, Lesage D, Aubert C, Fensterbank L, Gandon V, Ollivier C. Chiral Phosphate in Rhodium-Catalyzed Asymmetric [2+2+2] Cycloaddition: Ligand, Counterion, or Both? Chemistry 2016; 22:8553-8. [PMID: 27167983 DOI: 10.1002/chem.201601188] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Indexed: 11/08/2022]
Abstract
Investigations based on NMR spectroscopy, mass spectrometry, and DFT calculations shed light on the metallic species generated in the rhodium-catalyzed asymmetric [2+2+2] cycloaddition reaction between diynes and isocyanates with the chiral phosphate TRIP. The catalytic mixture comprising [{Rh(cod)Cl}2 ], 1,4-diphenylphosphinobutane (dppb), and Ag(S)-TRIP actually gives rise to two species, both having an effect on the stereoselectivity. One is a rhodium(I) complex in which TRIP is a weakly coordinating counterion, whereas the other is a bimetallic Rh/Ag complex in which TRIP is a strongly coordinating X-type ligand.
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Affiliation(s)
- Marion Barbazanges
- Sorbonne Universités, UPMC Univ. Paris 06, Institut Parisien de Chimie Moléculaire (UMR CNRS 8232), Case Courrier 229, 4 place Jussieu, 75252, Paris Cedex 05, France.
| | - Elsa Caytan
- Institut des Sciences Chimiques de Rennes, Université de Rennes 1, Campus de Beaulieu, 35042, Rennes Cedex, France
| | - Denis Lesage
- Sorbonne Universités, UPMC Univ. Paris 06, Institut Parisien de Chimie Moléculaire (UMR CNRS 8232), Case Courrier 229, 4 place Jussieu, 75252, Paris Cedex 05, France
| | - Corinne Aubert
- Sorbonne Universités, UPMC Univ. Paris 06, Institut Parisien de Chimie Moléculaire (UMR CNRS 8232), Case Courrier 229, 4 place Jussieu, 75252, Paris Cedex 05, France.
| | - Louis Fensterbank
- Sorbonne Universités, UPMC Univ. Paris 06, Institut Parisien de Chimie Moléculaire (UMR CNRS 8232), Case Courrier 229, 4 place Jussieu, 75252, Paris Cedex 05, France.
| | - Vincent Gandon
- ICMMO, Univ. Paris-Sud, CNRS UMR 8182, Université Paris-Saclay, 91405, Orsay cedex, France.,ICSN, CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, France
| | - Cyril Ollivier
- Sorbonne Universités, UPMC Univ. Paris 06, Institut Parisien de Chimie Moléculaire (UMR CNRS 8232), Case Courrier 229, 4 place Jussieu, 75252, Paris Cedex 05, France
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22
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Sivchik VV, Grachova EV, Melnikov AS, Smirnov SN, Ivanov AY, Hirva P, Tunik SP, Koshevoy IO. Solid-State and Solution Metallophilic Aggregation of a Cationic [Pt(NCN)L]+ Cyclometalated Complex. Inorg Chem 2016; 55:3351-63. [DOI: 10.1021/acs.inorgchem.5b02713] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Vasily V. Sivchik
- Department
of Chemistry, University of Eastern Finland, 80101 Joensuu, Finland
| | | | - Alexei S. Melnikov
- Institute
of Nanobiotechnologies, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia
| | | | | | - Pipsa Hirva
- Department
of Chemistry, University of Eastern Finland, 80101 Joensuu, Finland
| | | | - Igor. O. Koshevoy
- Department
of Chemistry, University of Eastern Finland, 80101 Joensuu, Finland
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23
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Rocchigiani L, Macchioni A. Disclosing the multi-faceted world of weakly interacting inorganic systems by means of NMR spectroscopy. Dalton Trans 2016; 45:2785-90. [DOI: 10.1039/c5dt04620c] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The potential of NMR spectroscopy to investigate inorganic systems whose structure and reactivity is affected by non-covalent interactions is described; supramolecular assemblies based on relatively unusual intermolecular forces or on more classical ones, still rather unexplored in solution, are considered.
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Affiliation(s)
| | - Alceo Macchioni
- Department of Chemistry
- Biology and Biotechnology and CIRCC
- University of Perugia
- Perugia
- Italy
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24
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Ciancaleoni G, Macchioni A, Rocchigiani L, Zuccaccia C. A PGSE NMR approach to the characterization of single and multi-site halogen-bonded adducts in solution. RSC Adv 2016. [DOI: 10.1039/c6ra17455h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
The diffusional PGSE NMR technique allows a detailed characterization of single- and multi-site halogen-bonded systems.
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Affiliation(s)
- Gianluca Ciancaleoni
- Departamento de Química
- Universidade Federal de Santa Catarina
- 88040-900 Florianópolis
- Brazil
| | - Alceo Macchioni
- Dipartimento di Chimica
- Biologia e Biotecnologie
- Universitá degli Studi di Perugia
- Perugia
- Italy
| | - Luca Rocchigiani
- Dipartimento di Chimica
- Biologia e Biotecnologie
- Universitá degli Studi di Perugia
- Perugia
- Italy
| | - Cristiano Zuccaccia
- Dipartimento di Chimica
- Biologia e Biotecnologie
- Universitá degli Studi di Perugia
- Perugia
- Italy
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25
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Subramanian H, Jasperse CP, Sibi MP. Characterization of Brønsted Acid–Base Complexes by 19F DOSY. Org Lett 2015; 17:1429-32. [PMID: 25730425 DOI: 10.1021/acs.orglett.5b00297] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hariharaputhiran Subramanian
- Department
of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Craig P. Jasperse
- Department
of Chemistry, Minnesota State University, Moorhead, Minnesota 56563, United States
| | - Mukund P. Sibi
- Department
of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
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26
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Biasiolo L, Ciancaleoni G, Belpassi L, Bistoni G, Macchioni A, Tarantelli F, Zuccaccia D. Relationship between the anion/cation relative orientation and the catalytic activity of nitrogen acyclic carbene–gold catalysts. Catal Sci Technol 2015. [DOI: 10.1039/c4cy01440e] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The role of the ligand in determining the ion pair structure of the [(NAC)Au(η2-3-hexyne)]+ BF4− catalysts and how the position of the anion (positions A, B and C) influences their catalytic performance in the intermolecular alkoxylation of alkynes have been studied.
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Affiliation(s)
- L. Biasiolo
- Dipartimento di Chimica
- Fisica e Ambiente
- Università di Udine
- I-33100 Udine
- Italy
| | - G. Ciancaleoni
- Istituto di Scienze e Tecnologie Molecolari del CNR (CNR-ISTM)
- c/o Dipartimento di Chimica
- Università degli Studi di Perugia
- Perugia
- Italy
| | - L. Belpassi
- Istituto di Scienze e Tecnologie Molecolari del CNR (CNR-ISTM)
- c/o Dipartimento di Chimica
- Università degli Studi di Perugia
- Perugia
- Italy
| | - G. Bistoni
- Istituto di Scienze e Tecnologie Molecolari del CNR (CNR-ISTM)
- c/o Dipartimento di Chimica
- Università degli Studi di Perugia
- Perugia
- Italy
| | - A. Macchioni
- Dipartimento di Dipartimento di Chimica
- Biologia e Biotecnologie
- Università degli Studi di Perugia
- Perugia
- Italy
| | - F. Tarantelli
- Dipartimento di Dipartimento di Chimica
- Biologia e Biotecnologie
- Università degli Studi di Perugia
- Perugia
- Italy
| | - D. Zuccaccia
- Dipartimento di Chimica
- Fisica e Ambiente
- Università di Udine
- I-33100 Udine
- Italy
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27
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Castelar S, Romero P, Serrano JL, Barberá J, Marcos M. Multifunctional ionic hybrid poly(propyleneimine) dendrimers surrounded by carbazole dendrons: liquid crystals, optical and electrochemical properties. RSC Adv 2015. [DOI: 10.1039/c5ra12237f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Hybrid ionic dendrimers prepared via ionic self-assembly by grafting of a cationic PPI dendrimer with bifunctional electroactive carbazole dendrons, display photoluminescence properties and self-assembly into nematic, smectic or columnar mesophases.
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Affiliation(s)
- Susana Castelar
- Departamento de Química Orgánica
- Facultad de Ciencias-Instituto de Ciencia de Materiales de Aragón
- Universidad de Zaragoza-CSIC
- 50009 Zaragoza
- Spain
| | - Pilar Romero
- Departamento de Química Orgánica
- Facultad de Ciencias-Instituto de Ciencia de Materiales de Aragón
- Universidad de Zaragoza-CSIC
- 50009 Zaragoza
- Spain
| | - José-Luis Serrano
- Departamento de Química Orgánica
- Facultad de Ciencias
- Instituto de Nanociencia de Aragón
- Universidad de Zaragoza
- 50009 Zaragoza
| | - Joaquín Barberá
- Departamento de Química Orgánica
- Facultad de Ciencias-Instituto de Ciencia de Materiales de Aragón
- Universidad de Zaragoza-CSIC
- 50009 Zaragoza
- Spain
| | - Mercedes Marcos
- Departamento de Química Orgánica
- Facultad de Ciencias-Instituto de Ciencia de Materiales de Aragón
- Universidad de Zaragoza-CSIC
- 50009 Zaragoza
- Spain
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28
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Ciancaleoni G, Bertani R, Rocchigiani L, Sgarbossa P, Zuccaccia C, Macchioni A. Discriminating Halogen-Bonding from Other Noncovalent Interactions by a Combined NOE NMR/DFT Approach. Chemistry 2014; 21:440-7. [DOI: 10.1002/chem.201404883] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Indexed: 11/08/2022]
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29
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Chiarella GM, Cotton FA, Murillo CA, Ventura K, Villagrán D, Wang X. Manipulating Magnetism: Ru25+ Paddlewheels Devoid of Axial Interactions. J Am Chem Soc 2014; 136:9580-9. [DOI: 10.1021/ja5020647] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gina M. Chiarella
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - F. Albert Cotton
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - Carlos A. Murillo
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - Karen Ventura
- Department
of Chemistry, University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Dino Villagrán
- Department
of Chemistry, University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Xiaoping Wang
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
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30
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Sattler E, Matern E, Rothenberger A, Okrut A, Bombicz P, Fernández I, Kovács I. From Neutral to Ionic Species: Syntheses and X‐ray Crystallographic and Multinuclear NMR Spectroscopic Studies of Li···P(SiMe
3
)–P
t
Bu
2
and Its Solvent Complexes. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201301189] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ewald Sattler
- Institut für Anorganische Chemie, Karlsruhe Institut für Technologie (KIT), Engesserstr. 15, Geb. 30.45, 76131 Karlsruhe, Germany
| | - Eberhard Matern
- Institut für Anorganische Chemie, Karlsruhe Institut für Technologie (KIT), Engesserstr. 15, Geb. 30.45, 76131 Karlsruhe, Germany
| | - Alexander Rothenberger
- Institut für Anorganische Chemie, Karlsruhe Institut für Technologie (KIT), Engesserstr. 15, Geb. 30.45, 76131 Karlsruhe, Germany
| | - Alexander Okrut
- Institut für Anorganische Chemie, Karlsruhe Institut für Technologie (KIT), Engesserstr. 15, Geb. 30.45, 76131 Karlsruhe, Germany
| | - Petra Bombicz
- Institute of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, POB 17, 1525 Budapest, Hungary
| | - Ignacio Fernández
- Department of Chemistry and Physics, University of Almería, Ctra. Sacramento s/n, 04120 Almería, Spain
| | - Ilona Kovács
- Institut für Anorganische Chemie, Karlsruhe Institut für Technologie (KIT), Engesserstr. 15, Geb. 30.45, 76131 Karlsruhe, Germany
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szt. Gellért tér 4, 1521 Budapest, Hungary, http://iaachem.bme.hu
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31
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Ciancaleoni G, Biasiolo L, Bistoni G, Macchioni A, Tarantelli F, Zuccaccia D, Belpassi L. NHC-Gold-Alkyne Complexes: Influence of the Carbene Backbone on the Ion Pair Structure. Organometallics 2013. [DOI: 10.1021/om4005912] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Gianluca Ciancaleoni
- Istituto di Scienze e Tecnologie
Molecolari del CNR (CNR-ISTM), c/o Dipartimento di Chimica, Università degli Studi di Perugia, I-06123,
Perugia, Italy
| | - Luca Biasiolo
- Istituto di Scienze e Tecnologie
Molecolari del CNR (CNR-ISTM), c/o Dipartimento di Chimica, Università degli Studi di Perugia, I-06123,
Perugia, Italy
- Dipartimento
di Chimica, Fisica
e Ambiente, Università di Udine,
Via Cotonificio 108, I-33100 Udine, Italy
| | - Giovanni Bistoni
- Istituto di Scienze e Tecnologie
Molecolari del CNR (CNR-ISTM), c/o Dipartimento di Chimica, Università degli Studi di Perugia, I-06123,
Perugia, Italy
- Dipartimento di Chimica, Università degli Studi di Perugia, Via Elce
di Sotto 8, I-06123, Perugia,
Italy
| | - Alceo Macchioni
- Dipartimento di Chimica, Università degli Studi di Perugia, Via Elce
di Sotto 8, I-06123, Perugia,
Italy
| | - Francesco Tarantelli
- Istituto di Scienze e Tecnologie
Molecolari del CNR (CNR-ISTM), c/o Dipartimento di Chimica, Università degli Studi di Perugia, I-06123,
Perugia, Italy
- Dipartimento di Chimica, Università degli Studi di Perugia, Via Elce
di Sotto 8, I-06123, Perugia,
Italy
| | - Daniele Zuccaccia
- Dipartimento
di Chimica, Fisica
e Ambiente, Università di Udine,
Via Cotonificio 108, I-33100 Udine, Italy
| | - Leonardo Belpassi
- Istituto di Scienze e Tecnologie
Molecolari del CNR (CNR-ISTM), c/o Dipartimento di Chimica, Università degli Studi di Perugia, I-06123,
Perugia, Italy
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Zuccaccia D, Belpassi L, Macchioni A, Tarantelli F. Ligand Effects on Bonding and Ion Pairing in Cationic Gold(I) Catalysts Bearing Unsaturated Hydrocarbons. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300285] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Freudenreich J, Dalvit C, Süss-Fink G, Therrien B. Encapsulation of Photosensitizers in Hexa- and Octanuclear Organometallic Cages: Synthesis and Characterization of Carceplex and Host–Guest Systems in Solution. Organometallics 2013. [DOI: 10.1021/om400237c] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Julien Freudenreich
- Institut de Chimie, Université de Neuchâtel, 51 Ave de Bellevaux, 2000 Neuchâtel,
Switzerland
| | - Claudio Dalvit
- Institut de Chimie, Université de Neuchâtel, 51 Ave de Bellevaux, 2000 Neuchâtel,
Switzerland
| | - Georg Süss-Fink
- Institut de Chimie, Université de Neuchâtel, 51 Ave de Bellevaux, 2000 Neuchâtel,
Switzerland
| | - Bruno Therrien
- Institut de Chimie, Université de Neuchâtel, 51 Ave de Bellevaux, 2000 Neuchâtel,
Switzerland
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Reddy G. N. M, Ballesteros-Garrido R, Lacour J, Caldarelli S. Determination of Labile Chiral Supramolecular Ion Pairs by Chromatographic NMR Spectroscopy. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209616] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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35
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Reddy G. N. M, Ballesteros-Garrido R, Lacour J, Caldarelli S. Determination of Labile Chiral Supramolecular Ion Pairs by Chromatographic NMR Spectroscopy. Angew Chem Int Ed Engl 2013; 52:3255-8. [DOI: 10.1002/anie.201209616] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Indexed: 11/07/2022]
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36
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Rocchigiani L, Busico V, Pastore A, Macchioni A. Probing the interactions between all components of the catalytic pool for homogeneous olefin polymerisation by diffusion NMR spectroscopy. Dalton Trans 2013; 42:9104-11. [DOI: 10.1039/c3dt00041a] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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37
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Raskatov JA, Thompson AL, Cowley AR, Claridge TDW, Brown JM. Chiral recognition in contact ion-pairs; observation, characterization and analysis. Chem Sci 2013. [DOI: 10.1039/c3sc51096d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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38
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Kotzé IA, Gerber WJ, Wu YS, Koch KR. Cation–π induced aggregation of water-soluble [PtII(diimine)(Ln-S,O)]+complexes studied by1H DOSY NMR and TEM: from ‘dimer aggregates’ in acetonitrile to nano-aggregates (‘metallogels’) in water. Dalton Trans 2013; 42:3791-801. [DOI: 10.1039/c2dt32053c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Ciancaleoni G, Belpassi L, Tarantelli F, Zuccaccia D, Macchioni A. A combined NMR/DFT study on the ion pair structure of [(PR12R2)Au(η2-3-hexyne)]BF4complexes. Dalton Trans 2013; 42:4122-31. [DOI: 10.1039/c2dt32260a] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Bryliakov KP, Talsi EP. Frontiers of mechanistic studies of coordination polymerization and oligomerization of α-olefins. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.06.023] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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41
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Ion aggregation of methylpyrazinium iodide and its derivatives in crystals and in solutions of nonpolar solvents. Russ Chem Bull 2012. [DOI: 10.1007/s11172-012-0047-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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42
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Synthesis, characterization and low temperature self assembling of (η3-allyl)palladium complexes with 2-pyridyl-1,2,3-triazole bidentate ligands. Study of the catalytic activity in Suzuki–Miyaura reaction. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2012.06.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Jara DH, Lemus L, Farías L, Freire E, Baggio R, Guerrero J. Spectroscopic Evidence in Solid and Solution of a Discrete Copper(I) Tetrahedral Complex Dimer Supported by Supramolecular Interactions. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201101356] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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45
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Sainz-Gonzalo FJ, Casimiro M, Popovici C, Rodríguez-Diéguez A, Fernández-Sánchez JF, Fernández I, López-Ortiz F, Fernández-Gutiérrez A. Development of polymeric sensing films based on a tridentate bis(phosphinic amide)-phosphine oxide for detecting europium(iii) in water. Dalton Trans 2012; 41:6735-48. [DOI: 10.1039/c2dt30257h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Borodkin GS, Borodkina IG, Garnovskii AD. Heteronuclear NMR spectroscopy in the coordination chemistry. RUSS J COORD CHEM+ 2011. [DOI: 10.1134/s1070328411070025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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47
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Ciancaleoni G, Fraldi N, Budzelaar PHM, Busico V, Macchioni A. Structure and Dynamics in Solution of Bis(phenoxy-amine)Zirconium Catalysts for Olefin Polymerization. Organometallics 2011. [DOI: 10.1021/om2001926] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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48
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Mougel V, Horeglad P, Nocton G, Pécaut J, Mazzanti M. Cation-cation complexes of pentavalent uranyl: from disproportionation intermediates to stable clusters. Chemistry 2011; 16:14365-77. [PMID: 21053213 DOI: 10.1002/chem.201001929] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Three new cation-cation complexes of pentavalent uranyl, stable with respect to the disproportionation reaction, have been prepared from the reaction of the precursor [(UO(2)py(5))(KI(2)py(2))](n) (1) with the Schiff base ligands salen(2-), acacen(2-), and salophen(2-) (H(2)salen = N,N'-ethylene-bis(salicylideneimine), H(2)acacen = N,N'-ethylenebis(acetylacetoneimine), H(2)salophen = N,N'-phenylene-bis(salicylideneimine)). The preparation of stable complexes requires a careful choice of counter ions and reaction conditions. Notably the reaction of 1 with salophen(2-) in pyridine leads to immediate disproportionation, but in the presence of [18]crown-6 ([18]C-6) a stable complex forms. The solid-state structure of the four tetranuclear complexes, {[UO(2)(acacen)](4)[μ(8)-](2)[K([18]C-6)(py)](2)} (3) and {[UO(2)(acacen)](4)[μ(8)-]}⋅2 [K([222])(py)] (4), {[UO(2)(salophen)](4)[μ(8)-K](2)[μ(5)-KI](2)[(K([18]C-6)]}⋅2 [K([18]C-6)(thf)(2)]⋅2 I (5), and {[UO(2)(salen)(4)][μ(8)-Rb](2)[Rb([18]C-6)](2)} (9) ([222] = [222]cryptand, py = pyridine), presenting a T-shaped cation-cation interaction has been determined by X-ray crystallographic studies. NMR spectroscopic and UV/Vis studies show that the tetranuclear structure is maintained in pyridine solution for the salen and acacen complexes. Stable mononuclear complexes of pentavalent uranyl are also obtained by reduction of the hexavalent uranyl Schiff base complexes with cobaltocene in pyridine in the absence of coordinating cations. The reactivity of the complex [U(V)O(2)(salen)(py)][Cp*(2)Co] with different alkali ions demonstrates the crucial effect of coordinating cations on the stability of cation-cation complexes. The nature of the cation plays a key role in the preparation of stable cation-cation complexes. Stable tetranuclear complexes form in the presence of K(+) and Rb(+), whereas Li(+) leads to disproportionation. A new uranyl-oxo cluster was isolated from this reaction. The reaction of [U(V)O(2)(salen)(py)][Cp*(2)Co] (Cp* = pentamethylcyclopentadienyl) with its U(VI) analogue yields the oxo-functionalized dimer [UO(2)(salen)(py)](2)[Cp*(2)Co] (8). The reaction of the {[UO(2)(salen)(4)][μ(8)-K](2)[K([18]C-6)](2)} tetramer with protons leads to disproportionation to U(IV) and U(VI) species and H(2)O confirming the crucial role of the proton in the U(V) disproportionation.
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Affiliation(s)
- Victor Mougel
- CEA, INAC, SCIB, Laboratoire de Reconnaissance Ionique et Chimie de Coordination, CEA-Grenoble, 38054 Grenoble, Cedex 09, France
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Press K, Cohen A, Goldberg I, Venditto V, Mazzeo M, Kol M. Salalen Titanium Complexes in the Highly Isospecific Polymerization of 1-Hexene and Propylene. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201007678] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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50
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Press K, Cohen A, Goldberg I, Venditto V, Mazzeo M, Kol M. Salalen Titanium Complexes in the Highly Isospecific Polymerization of 1-Hexene and Propylene. Angew Chem Int Ed Engl 2011; 50:3529-32. [DOI: 10.1002/anie.201007678] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Indexed: 11/06/2022]
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