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Couch AN, Lanza JM, Zall CM, Davidson JT. Differentiation of Δ 9-THC and CBD Using Silver-Ligand Ion Complexation and Electrospray Ionization Tandem Mass Spectrometry (ESI-MS/MS). JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2024; 35:1413-1421. [PMID: 38804709 DOI: 10.1021/jasms.3c00452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
The 2018 Farm Bill defines marijuana as Cannabis sativa L. or any derivative thereof that contains greater than 0.3% Δ9-tetrahydrocannabinol (Δ9-THC) on a dry weight basis. The main cannabinoids present in Cannabis sativa L., Δ9-THC and cannabidiol (CBD), are structural isomers that cannot be differentiated using direct mass spectrometry with soft ionization techniques alone. Due to the classification of marijuana as a Schedule I controlled substance, the differentiation of Δ9-THC and CBD is crucial within the seized drug community. This study explores the use of Ag-ligand ion complexation and electrospray ionization tandem mass spectrometry (ESI-MS/MS) for the differentiation of Δ9-THC and CBD using six different Ag complexes. Differences between the binding affinities of Δ9-THC and CBD for [Ag(PPh3)(OTf)]2 lead to the formation of unique product ions at m/z 421/423, m/z 353/355, and m/z 231 for CBD, enabling the differentiation of CBD from Δ9-THC. When applied to the analysis of known Δ9-THC:CBD mixture ratios, the developed [Ag(PPh3)(OTf)]2 ion complexation method was able to differentiate Δ9-THC-rich and CBD-rich samples based on the average abundance of the product ions at m/z 421/423. The developed approach was then applied to methanolic extracts of 20 authentic cannabis samples with known Δ9-THC and CBD compositions, resulting in a 95% correct classification rate. Even though the developed Ag-ligand ion complexation method was only demonstrated for the qualitative differentiation of Δ9-THC-rich and CBD-rich cannabis, this study establishes a foundation for the use of Ag-ligand ion complexation that is essential for future quantitative approaches.
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Affiliation(s)
- Alleigh N Couch
- Department of Forensic Science, Sam Houston State University, Huntsville, Texas 77341-2116, United States
| | - Jayleigh M Lanza
- Department of Chemistry, Sam Houston State University, Huntsville, Texas 77341-2116, United States
| | - Christopher M Zall
- Department of Chemistry, Sam Houston State University, Huntsville, Texas 77341-2116, United States
| | - J Tyler Davidson
- Department of Forensic Science, Sam Houston State University, Huntsville, Texas 77341-2116, United States
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2
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Ghosh M, Parvin N, Panwaria P, Tothadi S, Bakthavatsalam R, Therambram A, Khan S. Diverse structural reactivity patterns of a POCOP ligand with coinage metals. Dalton Trans 2024; 53:7763-7774. [PMID: 38619861 DOI: 10.1039/d3dt03921h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
We have utilised the 4,6-di-tert-butyl resorcinol bis(diphenylphosphinite) (POCOP) ligand for exploring its coordination ability towards group 11 metal centres. The treatment of the bidentate ligand 1 with various coinage metal precursors afforded a wide range of structurally diverse complexes 2-12, depending upon the metal precursors used. This furnishes several multinuclear Cu(I) complexes with dimeric (2) and tetrameric cores (3, 4, and 5). The tetrameric stairstep complex 4 shows thermochromic behaviour, whereas the dimeric complex 2 and tetrameric complex 3 show luminescence properties at cryogenic temperatures. Interestingly, the halide substitution reaction of the dimeric complex 2 with KPPh2 produces a unique mixed phosphine-based tetrameric Cu(I) complex, 5. Treatment of the POCOP ligand with [CuBF4(CH3CN)4] in the presence of 2,2'-bipyridine afforded heteroleptic complex 6, consisting of tri- and tetra-coordinated cationic Cu(I) centres. Furthermore, we could also isolate cubane (8) and stairstep (9) complexes of Ag(I). The cationic Au(I) complex (12) was obtained from the dinuclear Au(I) complex of POCOP, 11. Complex 12 revealed the presence of a strong intramolecular aurophilic interaction with an Au⋯Au bond distance of 3.1143(9) Å. Subsequently, the photophysical properties of these complexes have been studied. All the complexes were characterised by single-crystal X-ray diffraction studies, routine NMR techniques, and mass spectroscopy.
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Affiliation(s)
- Moushakhi Ghosh
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, India.
| | - Nasrina Parvin
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, India.
| | - Prakash Panwaria
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, India.
| | - Srinu Tothadi
- CSIR-Central Salt and Marine Chemicals Research Institute, Gijub Badheka Marg, Bhavnagar 364002, India
| | - Rangarajan Bakthavatsalam
- Department of Chemistry, Indian Institute of Science Education and Research Tirupati, Srinivasapuram-Jangalapalli Village, Tirupati 517619, India
| | - Arshad Therambram
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, India.
| | - Shabana Khan
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, India.
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3
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Zuffa C, Cappuccino C, Casali L, Emmerling F, Maini L. Liquid reagents are not enough for liquid assisted grinding in the synthesis of [(AgBr)( n-pica)] n. Phys Chem Chem Phys 2024; 26:5010-5019. [PMID: 38258475 DOI: 10.1039/d3cp04791a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
This study investigates the mechanochemical reactions between AgBr 3-picolylamine and 4-picolylamine. The use of different stoichiometry ratios of the reagents allows [(AgBr)(n-pica)]n and [(AgBr)2(n-pica)]n to be obtained, and we report the new structures of [(AgBr)2(3-pica)]n and [(AgBr)2(4-pica)]n which are characterized by the presence of the following: (a) infinite inorganic chains, (b) silver atom coordinated only by bromide atoms and (c) argentophilic interactions. Furthermore, we studied the interconversion of [(AgBr)(n-pica)]n/[(AgBr)2(n-pica)]n by mechanochemical and thermal properties. The in situ experiments suggest that [(AgBr)(3-pica)]n is kinetically favoured while [(AgBr)2(3-pica)]n is converted into [(AgBr)(3-pica)]n only with a high excess of the ligand. Finally, the liquid nature of the ligands is not sufficient to assist the grinding process, and the complete reaction is observed with the addition of a small quantity of acetonitrile.
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Affiliation(s)
- Caterina Zuffa
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via F. Selmi 2, Bologna, Italy.
| | - Chiara Cappuccino
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via F. Selmi 2, Bologna, Italy.
| | - Lucia Casali
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via F. Selmi 2, Bologna, Italy.
- BAM Federal Institute for Materials Research and Testing, Richard-Willstätter-Strasse 11, 12489 Berlin, Germany
| | - Franziska Emmerling
- BAM Federal Institute for Materials Research and Testing, Richard-Willstätter-Strasse 11, 12489 Berlin, Germany
| | - Lucia Maini
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via F. Selmi 2, Bologna, Italy.
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4
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Wang ZY, Freas DJ, Fu GC. Phosphine Catalysis of the Fluorination of Unactivated Tertiary Alkyl Chlorides under Mild and Convenient Conditions. J Am Chem Soc 2023; 145:25093-25097. [PMID: 37939003 PMCID: PMC10942731 DOI: 10.1021/jacs.3c11042] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
Due to the significance of organofluorine compounds in disciplines ranging from medicine to agriculture to materials science, the invention of new methods for the creation of carbon-fluorine bonds is an important objective. Among the underdeveloped dimensions in this area are the fluorination of hindered alkyl halides (particularly chlorides) and the discovery of catalysts for such fluorination processes. Herein, we report a mild method for the fluorination of unactivated tertiary alkyl chlorides (and bromides), catalyzed by inexpensive PPh3. This straightforward process is compatible with a range of hindered electrophiles and a variety of functional groups.
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Affiliation(s)
- Zhuo-Yan Wang
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Dylan J Freas
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Gregory C Fu
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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Roberts KE, Engelbrecht Z, Potgieter K, Meijboom R, Cronjé MJ. Silver(I) Bromide Phosphines Induce Mitochondrial-Mediated Apoptosis in Malignant Human Colorectal Cells. Biomedicines 2023; 11:2794. [PMID: 37893167 PMCID: PMC10604669 DOI: 10.3390/biomedicines11102794] [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: 09/15/2023] [Revised: 10/06/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023] Open
Abstract
Due to its emerging resistance to current therapies, colon cancer remains one of the most difficult types of cancer to treat. Silver, a non-invasive metal, is well-known for its antimicrobial and anti-cancer properties. Two novel silver(I) phosphine complexes, [silver(I) diphenyl-2-pyridylphosphine]Br (1) and [silver(I) is 4-(dimethylamino)phenyldiphenylphosphine]Br (2), were synthesized and characterized by elemental analysis, infrared spectroscopy, and nuclear magnetic resonance (1H, 13C, 31P). To assess the complexes' potentials as antiproliferative agents, experiments were conducted on human colorectal cancer cells (HT-29) in vitro. The evaluation involved the analysis of morphological changes, the performance of an alamarBlue® proliferation assay, and the undertaking of flow cytometric analyses to detect mitochondrial alterations. Complex 1 displayed superior selectivity and significant inhibitory effects on malignant HT-29 cells while exhibiting minimal toxicity towards two non-malignant HEK-293 and MRHF cells. Moreover, after 24 h of treatment, complex 1 (IC50, 7.49 µM) demonstrated higher efficacy in inhibiting cell proliferation compared with complex 2 (IC50, 21.75 µM) and CDDP (IC50, 200.96 µM). Flow cytometric studies indicated that complex 1 induced regulated cell death, likely through mitochondrial-mediated apoptosis. Treatment with complex 1 induced morphological changes indicative of apoptosis, which includes membrane blebbing, PS externalization, increased levels of reactive oxygen species (ROS) and mitochondrial membrane depolarization (ΔΨm). These observations suggest that complex 1 targets the mitochondria and holds promise as a novel metal-based anti-cancer therapeutic for the selective treatment of colorectal cancer.
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Affiliation(s)
- Kim Elli Roberts
- School of Molecular and Cell Biology, University of the Witwatersrand, Johannesburg 2050, South Africa; (K.E.R.)
| | - Zelinda Engelbrecht
- School of Molecular and Cell Biology, University of the Witwatersrand, Johannesburg 2050, South Africa; (K.E.R.)
| | - Kariska Potgieter
- Research Centre for Synthesis and Catalysis, Department of Chemical Sciences (APK), University of Johannesburg, Johannesburg 2006, South Africa (R.M.)
| | - Reinout Meijboom
- Research Centre for Synthesis and Catalysis, Department of Chemical Sciences (APK), University of Johannesburg, Johannesburg 2006, South Africa (R.M.)
| | - Marianne Jacqueline Cronjé
- School of Molecular and Cell Biology, University of the Witwatersrand, Johannesburg 2050, South Africa; (K.E.R.)
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6
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Zuffa C, Cappuccino C, Marchini M, Contini L, Farinella F, Maini L. AgX-based hybrid coordination polymers: mechanochemical synthesis, structure and luminescence property characterization. Faraday Discuss 2023; 241:448-465. [PMID: 36148875 DOI: 10.1039/d2fd00093h] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Hybrid coordination polymers are interesting for their ability to converge the properties of both inorganic and organic systems in one single compound and recently attention has been focused on silver based hybrid coordination polymers due to their luminescence properties. We searched the CSD to establish the propensity of AgXL (X = Cl-, Br- and I-) with L as an organic ligand to form hybrid coordination polymers. About 800 AgXL structures are deposited in the CSD, with huge structural variability: indeed, it is possible to recognize some structural preferences based on the halide nature. The formation of an inorganic polymeric unit is favoured by iodide but it is also possible with the other halides. This research continues with the synthesis of AgX (X = I-, Br-) based coordination polymers with 2-, 3- and 4-picolylamine (n-pica) as ligands. By mechanochemical synthesis five new hybrid coordination polymers and one coordination polymer have been obtained and their structures determined. While [(AgI)(n-pica)]n are not luminescent, [(AgBr)(n-pica)]n emit and their profile depends on the crystallinity of the sample.
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Affiliation(s)
- Caterina Zuffa
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via F. Selmi 2, Bologna, Italy.
| | - Chiara Cappuccino
- Department of Chemical Science and Bernal Institute, University of Limerick, Limerick, Ireland
| | - Marianna Marchini
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via F. Selmi 2, Bologna, Italy.
| | - Laura Contini
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via F. Selmi 2, Bologna, Italy.
| | - Francesco Farinella
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via F. Selmi 2, Bologna, Italy.
| | - Lucia Maini
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via F. Selmi 2, Bologna, Italy.
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7
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Malan FP, Potgieter K, Meijboom R. (Nitrito-κ 2 O, O')bis-[tris-(4-methyl-phen-yl)phosphane-κ P]silver(I). IUCRDATA 2022; 7:x221148. [PMID: 36628189 PMCID: PMC9815127 DOI: 10.1107/s2414314622011488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022] Open
Abstract
The mol-ecular structure of the title compound, [Ag(NO2)(C21H21P)2], exhibits a pseudo-tetra-hedral coordination around the central AgI atom. The compound crystallizes with one mol-ecule in the asymmetric unit in the monoclinic space group P21/n with a rather long b axis [33.8752 (2) Å]. Weak C-H⋯O and C-H⋯N inter-actions consolidate the crystal packing. The nitrite-O atoms each occupy a single position in the coordination geometry.
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Affiliation(s)
- Frederick P. Malan
- Department of Chemistry, University of Pretoria, Lynnwood Road, Hatfield, Pretoria, 0002, South Africa
| | - Kariska Potgieter
- Department of Chemical Sciences, University of Johannesburg, PO Box 524, Auckland Park, 2006, Johannesburg, South Africa
| | - Reinout Meijboom
- Department of Chemical Sciences, University of Johannesburg, PO Box 524, Auckland Park, 2006, Johannesburg, South Africa
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8
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Potgieter K, Malan FP, Alimi OA, Meijboom R. Tris(benzyl-diphenyl-phosphane-κ P)(nitrato-κ O)silver(I). IUCRDATA 2022; 7:x221147. [PMID: 36628192 PMCID: PMC9815128 DOI: 10.1107/s2414314622011476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022] Open
Abstract
The mol-ecular structure of the title complex, [Ag(NO3)(C19H17P)3], exhibits a severely distorted tetra-hedral coordination environment around the central AgI atom, comprising one O and three P atoms. Apart from a primary Ag-O coordination of the nitrato ligand of 2.667 (3) Å, a second (weaker) secondary inter-action of the nitrato ligand via the other O atom of 3.118 (4) Å is observed. The compound crystallizes with a complete mol-ecule in the asymmetric unit. Weak C-H⋯O inter-actions consolidate the packing.
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Affiliation(s)
- Kariska Potgieter
- Department of Chemical Sciences, University of Johannesburg, PO Box 524, Auckland Park, 2006, Johannesburg, South Africa
| | - Frederick P. Malan
- Department of Chemistry, University of Pretoria, Lynnwood Road, Hatfield, Pretoria, 0002, South Africa
| | - Oyekunle Azeez Alimi
- Department of Chemical Sciences, University of Johannesburg, PO Box 524, Auckland Park, 2006, Johannesburg, South Africa
| | - Reinout Meijboom
- Department of Chemical Sciences, University of Johannesburg, PO Box 524, Auckland Park, 2006, Johannesburg, South Africa
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9
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Supramolecular Dimeric Silver(I) Complex Based on the 1,1′-Bis(diphenylphosphino)ferrocene: Thermal Behaviors, Luminescence Studies and Cytotoxic Properties. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02414-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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10
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Artem'ev AV, Yu. Baranov A, Yu. Bagryanskaya I. Trigonal planar clusters Ag@Ag3 supported by (2-PyCH2)3P ligands. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109478] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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11
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Ahmad S, Hanif M, Monim-ul-Mehboob M, Isab AA, Alotaibi MA, Ahmad T. Versatile coordination chemistry of mixed ligand silver(I) complexes of phosphanes and thioamides: Structural features and biological properties. Polyhedron 2022. [DOI: 10.1016/j.poly.2021.115643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Effendy, Healy PC, Marchetti F, Pettinari C, Pettinari R, Tombesi A, Skelton BW, White AH. Synthesis and structural characterization of some 1:1 and 1:2 adducts of silver(I) salts with hindered Pmes3, PPhmes2 and PPh2mes bases (Ph = phenyl, mes = 2,4,6-trimethylpheny1)). Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.120857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Al-Masri HT, Almejled AA. Hg(II) and Ru(II) complexes of mono- and dichalcogenides of bis(diphenylphosphino)amine chelating ligands: Synthesis, characterization and catalytic activity in transfer hydrogenation of acetophenone derivatives. PHOSPHORUS SULFUR 2021. [DOI: 10.1080/10426507.2021.1948852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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14
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Al-Masri HT, Moussa Z. Tetracarbonyl group 6B metal complexes of a N-(4-acetylphenyl)- N-(diphenylphosphino)amine ligand. Molecular structure of cis-[Cr(CO) 4{4-CH 3CO-C 6H 4-1-N(PPh 2) 2}]. Heliyon 2021; 7:e08050. [PMID: 34611567 PMCID: PMC8477991 DOI: 10.1016/j.heliyon.2021.e08050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 08/16/2021] [Accepted: 09/18/2021] [Indexed: 10/26/2022] Open
Abstract
Chemical reactions of N-(4-acetylphenyl)-N-(diphenylphosphino)amine ligand (1) with three group 6B metal hexacarbonyls produced cis-M(CO)4[1-k 2 P,P][ M = Cr(2), Mo(3), W(4)], respectively. The novel complexes 2-4 were isolated and their structures were elucidated by multinuclear NMR spectroscopy (1H, 13C, 31P NMR) and elemental analysis. Crystal-structure determination using single-crystal X-ray diffraction was carried out on complex 2.
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Affiliation(s)
- Harbi Tomah Al-Masri
- Department of Chemistry, Faculty of Sciences, Al al-Bayt University, P.O. Box 130040, Mafraq, 25113, Jordan
| | - Ziad Moussa
- Department of Chemistry, College of Science, United Arab Emirates University, P.O. Box 15551, Al Ain, United Arab Emirates
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Moussa ME, Fleischmann M, Balázs G, Virovets AV, Peresypkina E, Shelyganov PA, Seidl M, Reichl S, Scheer M. Versatile Coordination of Ag I and Cu I Ions towards cyclo-As 5 Ligands. Chemistry 2021; 27:9742-9747. [PMID: 33988892 PMCID: PMC8361777 DOI: 10.1002/chem.202101096] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Indexed: 11/10/2022]
Abstract
The reactions of the cyclo‐As5 complex [Cp*Fe(η5‐As5)] (B) with the AgI and CuI salts of the weakly coordinating anion (WCA) [FAl{OC6F10(C6F5)}3]− ([FAl]−) are studied. These reactions allow the synthesis of the mononuclear complexes [M(η5 : η2‐B)2][FAl] (M=Ag (1), Cu (2)) when a ratio of B/M(FAl) 2 : 1 is used. Compound 1 shows an unusual disorder of the central AgI cation between two π‐coordinating cyclo‐As5 ligands, which is absent in 2 pointing to a weak interaction of the Ag center towards the cyclo‐As5 ligands in B. When the ratio of B/Ag(FAl) is changed to 3 : 1 or 1 : 1, the respective coordination compounds [Ag(η2‐B)3][FAl] (3) and [Ag2(η2 : η2‐B)2][FAl]2 (4) are accessible. The coordination modes of the cyclo‐As5 units in 1, 3 and 4 are all different, reflecting the adaptive coordination behavior of B towards AgI ions. The optimized geometries in the gas phase of 1–4 are determined by DFT calculations to support the bonding situation observed in their solid‐state structures.
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Affiliation(s)
- Mehdi Elsayed Moussa
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Martin Fleischmann
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Gábor Balázs
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Alexander V Virovets
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Eugenia Peresypkina
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Pavel A Shelyganov
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Michael Seidl
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Stephan Reichl
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Manfred Scheer
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
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16
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di Nicola C, Effendy, Hart RD, Marchetti F, Pettinari C, Pettinari R, Skelton BW, White AH. Synthesis and structural characterisation of some mononuclear 1:1:1 complexes of coinage metal(I) compounds with tertiary phosphines (arsines) and 1,2-diamines, [MX(EPh3)(N,N'-1,2-diamine)]. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120185] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Kirst C, Zoller F, Bräuniger T, Mayer P, Fattakhova-Rohlfing D, Karaghiosoff K. Investigation of Structural Changes of Cu(I) and Ag(I) Complexes Utilizing a Flexible, Yet Sterically Demanding Multidentate Phosphine Oxide Ligand. Inorg Chem 2021; 60:2437-2445. [PMID: 33534576 DOI: 10.1021/acs.inorgchem.0c03334] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The syntheses of a sterically demanding, multidentate bis(quinaldinyl)phenylphosphine oxide ligand and some Cu(I) and Ag(I) complexes thereof are described. By introducing a methylene group between the quinoline unit and phosphorus, the phosphine oxide ligand gains additional flexibility. This specific ligand design induces not only a versatile coordination chemistry but also a rarely observed and investigated behavior in solution. The flexibility of the birdlike ligand offers the unexpected opportunity of open-wing and closed-wing coordination to the metal. In fact, the determined crystal structures of these complexes show both orientations. Investigations of the ligand in solution show a strong dependency of the chemical shift of the CH2 protons on the solvent used. Variable-temperature, multinuclear NMR spectroscopy was carried out, and an interesting dynamic behavior of the complexes is observed. Due to the introduced flexibility, the quinaldinyl substituents change their arrangements from open-wing to closed-wing upon cooling, while still staying coordinated to the metal. This change in conformation is completely reversible when warming up the sample. Based on 2D NMR spectra measured at -80 °C, an assignment of the signals corresponding to the different arrangements was possible. Additionally, the copper(I) complex shows reversible redox activity in solution. The combination of structural flexibility of a multidentate ligand and the positive redox properties of the resulting complexes comprises key factors for a possible application of such compounds in transition-metal catalysis. Via a reorganization of the ligand, occurring transition states could be stabilized, and selectivity might be enhanced.
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Affiliation(s)
- Christin Kirst
- Department of Chemistry, Ludwig Maximilian University of Munich, Butenandtstraße 5-13, DE 81377 Munich, Germany
| | - Florian Zoller
- Department of Chemistry, Ludwig Maximilian University of Munich, Butenandtstraße 5-13, DE 81377 Munich, Germany.,Institute of Energy and Climate Research (IEK-1): Materials Synthesis and Processing, Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Straße, 52425 Jülich, Germany.,Faculty of Engineering and Center for Nanointegration Duisburg-Essen (CENIDE), Universität Duisburg-Essen, Lotharstraße 1, 47057 Duisburg, Germany
| | - Thomas Bräuniger
- Department of Chemistry, Ludwig Maximilian University of Munich, Butenandtstraße 5-13, DE 81377 Munich, Germany
| | - Peter Mayer
- Department of Chemistry, Ludwig Maximilian University of Munich, Butenandtstraße 5-13, DE 81377 Munich, Germany
| | - Dina Fattakhova-Rohlfing
- Institute of Energy and Climate Research (IEK-1): Materials Synthesis and Processing, Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Straße, 52425 Jülich, Germany.,Faculty of Engineering and Center for Nanointegration Duisburg-Essen (CENIDE), Universität Duisburg-Essen, Lotharstraße 1, 47057 Duisburg, Germany
| | - Konstantin Karaghiosoff
- Department of Chemistry, Ludwig Maximilian University of Munich, Butenandtstraße 5-13, DE 81377 Munich, Germany
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18
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Tong H, Liu W. Highly Stable Three-Dimensional Silver (I) Chloride Cluster Based Coordination Polymer and Its Dye Removal Properties. J CLUST SCI 2021. [DOI: 10.1007/s10876-021-01993-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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19
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Luiz TA. Syntheses and X-ray structure characterization of dimeric copper(I) halo(X)complexes (X = Br, I) of (di isopropylamino)(morpholino)(phenyl)phosphine. INORG NANO-MET CHEM 2021. [DOI: 10.1080/24701556.2020.1762221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- T. Arun Luiz
- Department of Chemistry, SSN College of Engineering, Chennai, India
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20
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Potwana FS, Pillay MN, Staples RJ, Adeniyi AA, Singh P, van Zyl WE. Silver(I) bis(phosphanylamino)naphthalene complexes: Synthesis, structures and density functional theory (DFT) calculations. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120041] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Moussa ME, Schiller J, Seidl M, Shelyganov PA, Scheer M. Discrete and polymeric organometallic-organic assemblies based on the diarsene complex [(Cp) 2Mo 2(CO) 4(μ,η 2-As 2)], AgPF 6 and N-donor organic molecules. NEW J CHEM 2021. [DOI: 10.1039/d0nj05959e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The first mixed-ligand self-assembly reactions of the diarsene complex [Cp2Mo2(CO)4(μ,η2-As2)] and N-donor organic molecules in the presence of AgPF6 allow for the synthesis of two discrete and four polymeric supramolecular aggregates.
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Affiliation(s)
- Mehdi Elsayed Moussa
- Institut für Anorganische Chemie der Universität Regensburg
- Regensburg 93040
- Germany
| | - Jana Schiller
- Institut für Anorganische Chemie der Universität Regensburg
- Regensburg 93040
- Germany
| | - Michael Seidl
- Institut für Anorganische Chemie der Universität Regensburg
- Regensburg 93040
- Germany
| | - Pavel A. Shelyganov
- Institut für Anorganische Chemie der Universität Regensburg
- Regensburg 93040
- Germany
| | - Manfred Scheer
- Institut für Anorganische Chemie der Universität Regensburg
- Regensburg 93040
- Germany
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22
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Elsayed Moussa M, Marquardt C, Hegen O, Seidl M, Scheer M. A new family of silver( i) complexes stabilised by the phosphanylborane (C 6H 5) 2PBH 2·N(CH 3) 3. NEW J CHEM 2021. [DOI: 10.1039/d0nj01679a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
By the reaction of the phosphanylborane Ph2PBH2·NMe3 with Ag[FAl{OC6F10(C6F5)}3] or Ag[BF4] first Ag(i) coordination compounds stabilized by phosphine-boranes were obtained.
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Affiliation(s)
- Mehdi Elsayed Moussa
- Institut für Anorganische Chemie der Universität Regensburg, 93040 Regensburg, Germany
| | - Christian Marquardt
- Institut für Anorganische Chemie der Universität Regensburg, 93040 Regensburg, Germany
| | - Oliver Hegen
- Institut für Anorganische Chemie der Universität Regensburg, 93040 Regensburg, Germany
| | - Michael Seidl
- Institut für Anorganische Chemie der Universität Regensburg, 93040 Regensburg, Germany
| | - Manfred Scheer
- Institut für Anorganische Chemie der Universität Regensburg, 93040 Regensburg, Germany
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23
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Al-Masri HT, Moussa Z, Al Masaeid NM. SYNTHESIS AND CHARACTERIZATION OF N-(4-ACETYLPHENYL)-N-(DIPHENYLPHOSPHINO)- P,P-DIPHENYLPHOSPHINOUS AMIDE DERIVATIVES: APPLICATION OF A Pd(ΙΙ) DERIVATIVE AS A PRE-CATALYST IN THE SUZUKI CROSS-COUPLING REACTION. J STRUCT CHEM+ 2020. [DOI: 10.1134/s0022476620110086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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24
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Rago A, Guérin C, Framery E, Jean‐Gérard L, Comby‐Zerbino C, Dugourd P, Andrioletti B. Dipyrromethene‐Triazolylidene Silver Complexes: Synthesis, Structure and Opportunities. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000805] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Aurélie Rago
- Institut de Chimie et Biochimie Moléculaire et Supramoléculaire, UMR CNRS 7246 Université Claude Bernard Lyon 1, Université de Lyon 43, Bd du 11 Novembre 1918 69622 Villeurbanne Cedex France
| | - Charles Guérin
- Institut de Chimie et Biochimie Moléculaire et Supramoléculaire, UMR CNRS 7246 Université Claude Bernard Lyon 1, Université de Lyon 43, Bd du 11 Novembre 1918 69622 Villeurbanne Cedex France
| | - Eric Framery
- Institut de Chimie et Biochimie Moléculaire et Supramoléculaire, UMR CNRS 7246 Université Claude Bernard Lyon 1, Université de Lyon 43, Bd du 11 Novembre 1918 69622 Villeurbanne Cedex France
| | - Ludivine Jean‐Gérard
- Institut de Chimie et Biochimie Moléculaire et Supramoléculaire, UMR CNRS 7246 Université Claude Bernard Lyon 1, Université de Lyon 43, Bd du 11 Novembre 1918 69622 Villeurbanne Cedex France
| | - Clothilde Comby‐Zerbino
- Institut Lumière Matière, UMR CNRS 5306 Université Claude Bernard Lyon 1, Université de Lyon 69622 Villeurbanne Cedex France
| | - Philippe Dugourd
- Institut Lumière Matière, UMR CNRS 5306 Université Claude Bernard Lyon 1, Université de Lyon 69622 Villeurbanne Cedex France
| | - Bruno Andrioletti
- Institut de Chimie et Biochimie Moléculaire et Supramoléculaire, UMR CNRS 7246 Université Claude Bernard Lyon 1, Université de Lyon 43, Bd du 11 Novembre 1918 69622 Villeurbanne Cedex France
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25
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Dammak K, Porchia M, De Franco M, Zancato M, Naïli H, Gandin V, Marzano C. Antiproliferative Homoleptic and Heteroleptic Phosphino Silver(I) Complexes: Effect of Ligand Combination on Their Biological Mechanism of Action. Molecules 2020; 25:molecules25225484. [PMID: 33238608 PMCID: PMC7700221 DOI: 10.3390/molecules25225484] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/19/2020] [Accepted: 11/20/2020] [Indexed: 12/12/2022] Open
Abstract
A series of neutral mixed-ligand [HB(pz)3]Ag(PR3) silver(I) complexes (PR3 = tertiary phosphine, [HB(pz)3]− = tris(pyrazolyl)borate anion), and the corresponding homoleptic [Ag(PR3)4]BF4 compounds have been synthesized and fully characterized. Silver compounds were screened for their antiproliferative activities against a wide panel of human cancer cells derived from solid tumors and endowed with different platinum drug sensitivity. Mixed-ligand complexes were generally more effective than the corresponding homoleptic derivatives, but the most active compounds were [HB(pz)3]Ag(PPh3) (5) and [Ag(PPh3)4]BF4 (10), both comprising the lipophilic PPh3 phosphine ligand. Detailed mechanistic studies revealed that both homoleptic and heteroleptic silver complexes strongly and selectively inhibit the selenoenzyme thioredoxin reductase both as isolated enzyme and in human ovarian cancer cells (half inhibition concentration values in the nanomolar range) causing the disruption of cellular thiol-redox homeostasis, and leading to apoptotic cell death. Moreover, for heteroleptic Ag(I) derivatives, an additional ability to damage nuclear DNA has been detected. These results confirm the importance of the type of silver ion coordinating ligands in affecting the biological behavior of the overall corresponding silver complexes, besides in terms of hydrophilic–lipophilic balance, also in terms of biological mechanism of action, such as interaction with DNA and/or thioredoxin reductase.
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Affiliation(s)
- Khouloud Dammak
- Laboratoire Physico-Chimie de l’Etat Solide, Département de Chimie, Faculté des Sciences de Sfax, Université de Sfax, B.P. 1171, Sfax 3000, Tunisia; (K.D.); (H.N.)
| | - Marina Porchia
- CNR-ICMATE, Corso Stati Uniti 4, 35127 Padova, Italy
- Correspondence: (M.P.); (V.G.)
| | - Michele De Franco
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, via Marzolo 5, 35131 Padova, Italy; (M.D.F.); (M.Z.); (C.M.)
| | - Mirella Zancato
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, via Marzolo 5, 35131 Padova, Italy; (M.D.F.); (M.Z.); (C.M.)
| | - Houcine Naïli
- Laboratoire Physico-Chimie de l’Etat Solide, Département de Chimie, Faculté des Sciences de Sfax, Université de Sfax, B.P. 1171, Sfax 3000, Tunisia; (K.D.); (H.N.)
| | - Valentina Gandin
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, via Marzolo 5, 35131 Padova, Italy; (M.D.F.); (M.Z.); (C.M.)
- Correspondence: (M.P.); (V.G.)
| | - Cristina Marzano
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, via Marzolo 5, 35131 Padova, Italy; (M.D.F.); (M.Z.); (C.M.)
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26
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Moussa ME, Schiller J, Peresypkina E, Seidl M, Balázs G, Shelyganov P, Scheer M. The Potential of the Diarsene Complex [(C 5 H 5 ) 2 Mo 2 (CO) 4 (μ,η 2 -As 2 )] as a Connector Between Silver Ions. Chemistry 2020; 26:14315-14319. [PMID: 32531104 PMCID: PMC7702026 DOI: 10.1002/chem.202002513] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Indexed: 01/04/2023]
Abstract
The reaction of the organometallic diarsene complex [Cp2Mo2(CO)4(μ,η2‐As2)] (B) (Cp = C5H5) with Ag[FAl{OC6F10(C6F5)}3] (Ag[FAl]) and Ag[Al{OC(CF3)3}4] (Ag[TEF]), respectively, yields three unprecedented supramolecular assemblies [(η2‐B)4Ag2][FAl]2 (4), [(μ,η1:η2‐B)3(η2‐B)2Ag3][TEF]3 (5) and [(μ,η1:η2‐B)4Ag3][TEF]3 (6). These products are only composed of the complexes B and AgI. Moreover, compounds 5 and 6 are the only supramolecular assemblies featuring B as a linking unit, and the first examples of [AgI]3 units stabilized by organometallic bichelating ligands. According to DFT calculations, complex B coordinates to metal centers through both the As lone pair and the As−As σ‐bond thus showing this unique feature of this diarsene ligand.
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Affiliation(s)
- Mehdi Elsayed Moussa
- Institut für Anorganische Chemie der Universität Regensburg, 93040, Regensburg, Germany
| | - Jana Schiller
- Institut für Anorganische Chemie der Universität Regensburg, 93040, Regensburg, Germany
| | - Eugenia Peresypkina
- Institut für Anorganische Chemie der Universität Regensburg, 93040, Regensburg, Germany
| | - Michael Seidl
- Institut für Anorganische Chemie der Universität Regensburg, 93040, Regensburg, Germany
| | - Gábor Balázs
- Institut für Anorganische Chemie der Universität Regensburg, 93040, Regensburg, Germany
| | - Pavel Shelyganov
- Institut für Anorganische Chemie der Universität Regensburg, 93040, Regensburg, Germany
| | - Manfred Scheer
- Institut für Anorganische Chemie der Universität Regensburg, 93040, Regensburg, Germany
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27
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Abstract
Phosphangulene (1) is a hexacyclic triarylphosphine with a distinctive conical shape and other features that allow the compound to be viewed from diverse perspectives and to be embraced by chemists from different parts of the field as a molecule worthy of special attention. In recent work, phosphangulene and its derivatives have proven to be effective tools for probing general principles that govern molecular organization in solids. The phosphangulene family is particularly well-suited for these studies because systematic structural changes in the compounds are easy to introduce. In crystals of phosphangulene itself, molecules are stacked efficiently like hats, giving rise to an R3m structure that is polar and pyroelectric. Simple conversion of the compound into phosphangulene oxide (7a) or other chalcogenides blocks effective stacking and forces crystallization to produce alternative structures that have many suboptimal intermolecular interactions and vary little in energy as their geometries are altered. This leads to high levels of polymorphism, and phosphangulene oxide (7a) belongs to the elite set of compounds known to exist in five or more forms characterized by single-crystal X-ray diffraction. For similar reasons, phosphangulene chalcogenides form crystals with complex unit cells in which multiple inequivalent molecules are needed to optimize packing, and the compounds are also predisposed to form solvates and mixed crystals containing other molecules. For example, crystallization of a 1:1 mixture of phosphangulene and oxide 7a yielded needles composed of pure phosphangulene along with crystals of the oxide containing substantial amounts of phosphangulene. Phosphangulene has one known polymorph, and its crystallization rejects the oxide. In contrast, the oxide is highly polymorphic, and its crystallization is prone to errors in which molecules in the lattice are replaced by other compounds. Packing in crystals of the oxide appears to be so ineffective that the orientation and even the identity of the molecular components can be varied without imposing severe energetic penalties.Because substituted members of the phosphangulene family have awkward curved shapes that cannot be packed efficiently, they have emerged as highly effective partners for cocrystallizing fullerenes and for using concave-convex interactions to control how fullerenes can be organized in materials. This can be achieved without eliminating fullerene-fullerene contacts of the type needed to ensure conductivity. In addition, phosphangulene has created unlimited opportunities for making complex structures with large curved aromatic surfaces based on a new strategy in which the central atom of phosphorus is used to form covalent bonds with other elements or to introduce coordinative interactions with metals. In these ways, recent work has put phosphangulene in the spotlight as a compound of unusually broad interest and shown that it can appropriately be called a molecule for all chemists.
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Affiliation(s)
- Alice Heskia
- Département de Chimie, Université de Montréal, Montréal, Québec H2V0B3, Canada
| | - Thierry Maris
- Département de Chimie, Université de Montréal, Montréal, Québec H2V0B3, Canada
| | - James D. Wuest
- Département de Chimie, Université de Montréal, Montréal, Québec H2V0B3, Canada
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28
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Li Y, Deng Z. Ag Ion Soldering: An Emerging Tool for Sub-nanomeric Plasmon Coupling and Beyond. Acc Chem Res 2019; 52:3442-3454. [PMID: 31742388 DOI: 10.1021/acs.accounts.9b00463] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Self-assembly represents probably the most flexible way to construct metastructured materials and devices from a wealth of colloidal building blocks with synthetically controllable sizes, shapes, and elemental compositions. In principle, surface capping is unavoidable during the synthesis of nanomaterials with well-defined geometry and stability. The ligand layer also endows inorganic building blocks with molecular recognition ability responsible for their assembly into desired structures. In the case of plasmonic nanounits, precise positioning of them in a nanomolecule or an ordered nanoarray provides a chance to shape their electrodynamic behaviors and thereby assists experimental demonstration of modern nanoplasmonics toward practical uses. Despite previous achievements in bottom-up nanofabrication, a big challenge exists toward strong coupling and facile charge transfer between adjacent nanounits in an assembly. This difficulty has impeded a functional development of plasmonic nanoassemblies. The weakened interparticle coupling originates from the electrostatic and steric barriers of ionic/molecular adsorbates to guarantee a good colloidal stability. Such a dilemma is rooted in fundamental colloidal science, which lacks an effective solution. During the past several years, a chemical tool termed Ag ion soldering (AIS) has been developed to overcome the above situation toward functional colloidal nanotechnology. In particular, a dimeric assembly of plasmonic nanoparticles has been taken as an ideal model to study plasmonic coupling and interparticle charge transfer. This Account starts with a demonstration of the chemical mechanism of AIS, followed by a verification of its workability in various self-assembly systems. A further use of AIS to realize postsynthetic coupling of DNA-directed nanoparticle clusters evidences its compatibility with DNA nanotechnology. Benefiting from the sub-nanometer interparticle gap achieved by AIS, a conductive pathway is established between two nanoparticles in an assembly. Accordingly, light-driven charge transfer between the conductively bridged plasmonic units is realized with highly tunable resonance frequencies. These situations have been demonstrated by thermal/photothermal sintering of silica-isolated nanoparticle dimers as well as gap-specific electroless gold/silver deposition. The regioselective silver deposition is then combined with galvanic replacement to obtain catalytically active nanofoci (plasmonic nanogaps). The resulting structures are useful for real time and on-site Raman spectroscopic tracking of chemical reactions in the plasmonic hotspots (nanogaps) as well as for study of plasmon-mediated/field-enhanced catalysis. The Account is concluded by a deeper insight into the chemical mechanism of AIS and its adaption to conformation-rich structures. Finally, AIS-enabled functional pursuits are suggested for self-assembled materials with strongly coupled and easily reshapable physicochemical properties.
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Affiliation(s)
- Yulin Li
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zhaoxiang Deng
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
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29
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Heskia A, Maris T, Aguiar PM, Wuest JD. Building Large Structures with Curved Aromatic Surfaces by Complexing Metals with Phosphangulene. J Am Chem Soc 2019; 141:18740-18753. [DOI: 10.1021/jacs.9b08179] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alice Heskia
- Département de Chimie, Université de Montréal, Montréal, Québec H3C 3J7 Canada
| | - Thierry Maris
- Département de Chimie, Université de Montréal, Montréal, Québec H3C 3J7 Canada
| | - Pedro M. Aguiar
- Département de Chimie, Université de Montréal, Montréal, Québec H3C 3J7 Canada
| | - James D. Wuest
- Département de Chimie, Université de Montréal, Montréal, Québec H3C 3J7 Canada
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30
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Hecel A, Kolkowska P, Krzywoszynska K, Szebesczyk A, Rowinska-Zyrek M, Kozlowski H. Ag+ Complexes as Potential Therapeutic Agents in Medicine and Pharmacy. Curr Med Chem 2019; 26:624-647. [DOI: 10.2174/0929867324666170920125943] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 07/28/2017] [Accepted: 08/09/2017] [Indexed: 12/17/2022]
Abstract
Silver is a non-essential element with promising antimicrobial and anticancer properties. This work is a detailed summary of the newest findings on the bioinorganic chemistry of silver, with a special focus on the applications of Ag+ complexes and nanoparticles. The coordination chemistry of silver is given a reasonable amount of attention, summarizing the most common silver binding sites and giving examples of such binding motifs in biologically important proteins. Possible applications of this metal and its complexes in medicine, particularly as antibacterial and antifungal agents and in cancer therapy, are discussed in detail. The most recent data on silver nanoparticles are also summarized.
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Affiliation(s)
- Aleksandra Hecel
- Faculty of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50383 Wroclaw, Poland
| | - Paulina Kolkowska
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, via A. Moro 2, 53100 Siena, Italy
| | - Karolina Krzywoszynska
- Institute of Cosmetology, Public Higher Medical Professional School in Opole, Katowicka 68, 45060 Opole, Poland
| | - Agnieszka Szebesczyk
- Institute of Cosmetology, Public Higher Medical Professional School in Opole, Katowicka 68, 45060 Opole, Poland
| | | | - Henryk Kozlowski
- Institute of Cosmetology, Public Higher Medical Professional School in Opole, Katowicka 68, 45060 Opole, Poland
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31
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Rogovoy MI, Samsonenko DG, Rakhmanova MI, Artem'ev AV. Self-assembly of Ag(I)-based complexes and layered coordination polymers bridged by (2-thiazolyl)sulfides. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.01.036] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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32
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Liu C, Liu C, Ren Z, Lang J. Silver(I)‐Based Complexes Used as High‐Performance Photocatalysts for the Degradation of Organic Dyes in Water. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900026] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Chao‐Fan Liu
- College of Chemistry Chemical Engineering and Materials Science Soochow University 215123, Jiangsu Suzhou P. R. China
| | - Chun‐Yu Liu
- College of Chemistry Chemical Engineering and Materials Science Soochow University 215123, Jiangsu Suzhou P. R. China
| | - Zhi‐Gang Ren
- College of Chemistry Chemical Engineering and Materials Science Soochow University 215123, Jiangsu Suzhou P. R. China
| | - Jian‐Ping Lang
- College of Chemistry Chemical Engineering and Materials Science Soochow University 215123, Jiangsu Suzhou P. R. China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 200032 Shanghai P. R. China
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33
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Fang L, Liu D, Wang Y, Li Y, Song L, Gong M, Li Y, Deng Z. Nanosecond-Laser-Based Charge Transfer Plasmon Engineering of Solution-Assembled Nanodimers. NANO LETTERS 2018; 18:7014-7020. [PMID: 30281316 DOI: 10.1021/acs.nanolett.8b02965] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The ability to re-engineer self-assembled functional structures with nanometer accuracy through solution-processing techniques represents a big challenge in nanotechnology. Herein we demonstrate that Ag+-soldered nanodimers with a steric confinement coating of silica can be harnessed to realize an in-solution nanosecond laser reshaping to form interparticle conductive pathway with finely controlled conductance. The high structural purity of the nanodimers, the rigid silica coating, and the uniform (but still adjustable) sub-1-nm interparticle gap together determine the success of the laser reshaping process. This method is applicable to DNA-assembled nanodimers, and thus promises DNA-based programming toward higher structural complexity. The resulting structures exhibit highly tunable charge transfer plasmons at visible and near-infrared frequencies dictated by the fluence of the laser pulses. Our work provides an in-solution, rapid, and nonperturbative route to realize charge transfer plasmonic coupling along prescribed paths defined by self-assembly, conferring great opportunities for functional metamaterials in the context of chemical, biological, and nanophotonic applications. The ability to continuously control a subnm interparticle gap and the nanomeric width of a conductive junction also provides a platform to investigate modern plasmonic theories involving quantum and nonlocal effects.
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Affiliation(s)
- Lingling Fang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Dilong Liu
- Key Lab of Materials Physics, Institute of Solid State Physics , Chinese Academy of Sciences , Hefei , Anhui 230031 , China
| | - Yueliang Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Yanjuan Li
- CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Lei Song
- CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Ming Gong
- Engineering and Materials Science Experiment Center , University of Science and Technology of China , Hefei , Anhui 230027 , China
| | - Yue Li
- Key Lab of Materials Physics, Institute of Solid State Physics , Chinese Academy of Sciences , Hefei , Anhui 230031 , China
| | - Zhaoxiang Deng
- CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , China
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34
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Kokunov YV, Kovalev VV, Gorbunova YE, Kozyukhin SA, Razgonyaeva GA. Coordination Compounds of Silver Methanesulfonate with Triphenylphosphine and 1,2-Bis(4-Pyridyl)ethane. RUSS J COORD CHEM+ 2018. [DOI: 10.1134/s1070328418020069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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35
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Škoch K, Uhlík F, Císařová I, Štěpnička P. Silver(i) complexes with 1'-(diphenylphosphino)-1-cyanoferrocene: the art of improvisation in coordination. Dalton Trans 2018; 45:10655-71. [PMID: 27270952 DOI: 10.1039/c6dt01843b] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
1'-(Diphenylphosphino)-1-cyanoferrocene () reacts with silver(i) halides at a 1 : 1 metal-to-ligand ratio to afford the heterocubane complexes [Ag(μ3-X)(-κP)]4, where X = Cl (), Br (), and I (). In addition, the reaction with AgCl with 2 equiv. of leads to chloride-bridged dimer [(μ-Cl)2{Ag(-κP)2}2] () and, presumably, also to [(μ(P,N)-){AgCl(-κP)}]2 (). While similar reactions with AgCN furnished only the insoluble coordination polymer [(-κP)2Ag(NC)Ag(CN)]n (), those with AgSCN afforded the heterocubane [Ag(-κP)(μ-SCN-S,S,N)]4 () and the thiocyanato-bridged disilver(i) complex [Ag(-κP)2(μ-SCN-S,N)]2 (), thereby resembling reactions in the AgCl- system. Attempted reactions with AgF led to ill-defined products, among which [Ag(-κP)2(μ-HF2)]2 () and [(μ-SiF6){Ag(-κP)2}2] () could be identified. The latter compound was prepared also from Ag2[SiF6] and . Reactions between and AgClO4 or Ag[BF4] afforded disilver complexes [(μ(P,N)-)Ag(ClO4-κO)]2 () and [(μ(P,N)-)Ag(BF4-κF)]2 () featuring pseudolinear Ag(i) centers that are weakly coordinated by the counter anions. A similar reaction with Ag[SbF6] followed by crystallization from ethyl acetate produced an analogous complex, albeit with coordinated solvent, [(μ(P,N)-)Ag(AcOEt-κO)]2[SbF6]2 (). Ultimately, a compound devoid of any additional ligands at the Ag(i) centers, [(μ(P,N)-)Ag]2[B(C6H3(CF3)2-3,5)4]2 (), was obtained from the reaction of with silver(i) tetrakis[3,5-bis(trifluoromethyl)phenyl]borate. The reaction of Ag[BF4] with two equivalents of produced unique coordination polymer [Ag(-κP)(μ(P,N)-)]n[BF4]n (), the structure of which contained one of the phosphinoferrocene ligands coordinated as a P,N-chelate and the other forming a bridge to an adjacent Ag(i) center. All of these compounds were structurally characterized by single-crystal X-ray crystallography, revealing that the lengths of the bonds between silver and its anionic ligand(s) typically exceed the sum of the respective covalent radii, which is in line with the results of theoretical calculations at the density-functional theory (DFT) level, suggesting that standard covalent dative bonds are formed between silver and phosphorus (soft acid/soft base interactions) while the interactions between silver and the ligand's nitrile group (if coordinated) or the supporting anion are of predominantly electrostatic nature.
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Affiliation(s)
- Karel Škoch
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Prague, Czech Republic.
| | - Filip Uhlík
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Prague, Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Prague, Czech Republic.
| | - Petr Štěpnička
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Prague, Czech Republic.
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Škoch K, Císařová I, Štěpnička P. Silver(I) complexes with 1′-(diphenylphosphino)-1-cyanoferrocene and nitrite or nitrate supporting ligands. INORG CHEM COMMUN 2017. [DOI: 10.1016/j.inoche.2017.08.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Wang Y, Cui YZ, Li ZF, Liu M, Yang YP, Zhang ZW, Xin XL, Jin QH. Synthesis, Characterization, and Luminescent Properties of Silver(I) Complexes based on Diphosphine Ligands and 6,7-Dicyanodipyridoquinoxaline. Z Anorg Allg Chem 2017. [DOI: 10.1002/zaac.201700241] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Yu Wang
- Department of Chemistry; Capital Normal University; 100048 Beijing P. R. China
| | - Yang-Zhe Cui
- Department of Chemistry; Capital Normal University; 100048 Beijing P. R. China
| | - Zhong-Feng Li
- Department of Chemistry; Capital Normal University; 100048 Beijing P. R. China
| | - Min Liu
- The College of Materials Science and Engineering; Beijing University of Technology; 100124 Beijing P. R. China
| | - Yu-Ping Yang
- School of Science; Minzu University of China; 100081 Beijing P. R. China
| | - Zhen-Wei Zhang
- Beijing Key Laboratory for Terahertz Spectroscopy and Imaging; Key Laboratory of Terahertz Optoelectronics, Ministry of Education; Department of Physics; Capital Normal University; 100048 Beijing P. R. China
| | - Xiu-Lan Xin
- School of Food and Chemical Engineering; Beijing Technology and Business University; 100048 Beijing P. R. China
| | - Qiong-Hua Jin
- Department of Chemistry; Capital Normal University; 100048 Beijing P. R. China
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Potgieter K, Engelbrecht Z, Naganagowda G, Cronjé MJ, Meijboom R. Anticancer activity of silver(I) cyclohexyldiphenylphosphine complexes toward SNO cancer cells. J COORD CHEM 2017. [DOI: 10.1080/00958972.2017.1366466] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Kariska Potgieter
- Department of Chemistry, University of Johannesburg, Auckland Park, Johannesburg, South Africa
| | - Zelinda Engelbrecht
- Department of Biochemistry, University of Johannesburg, Auckland Park, Johannesburg, South Africa
| | - Gadada Naganagowda
- Department of Chemistry, University of Johannesburg, Auckland Park, Johannesburg, South Africa
| | - Marianne J. Cronjé
- Department of Biochemistry, University of Johannesburg, Auckland Park, Johannesburg, South Africa
| | - Reinout Meijboom
- Department of Chemistry, University of Johannesburg, Auckland Park, Johannesburg, South Africa
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39
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Samide A, Tutunaru B. Interactions between Vitamin C and Nanocolloidal Silver Particles Studied by Cyclic Voltammetry and UV-Vis Spectrophotometry. ELECTROANAL 2017. [DOI: 10.1002/elan.201700281] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Adriana Samide
- University of Craiova, Faculty of Sciences, Department of Chemistry; Calea Bucureşti 107i Craiova Romania
| | - Bogdan Tutunaru
- University of Craiova, Faculty of Sciences, Department of Chemistry; Calea Bucureşti 107i Craiova Romania
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40
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Jenkins DE, Assefa Z. Structural, photoluminescence, and theoretical DFT studies of gold(I) and silver(I) metallacycle dinuclear complexes of 1-methylbenzimidazolediphenyl phosphine (MBDP) ligand. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.11.070] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Human-Engelbrecht Z, Meijboom R, Cronjé MJ. Apoptosis-inducing ability of silver(I) cyanide-phosphines useful for anti-cancer studies. Cytotechnology 2017; 69:591-600. [PMID: 28188415 DOI: 10.1007/s10616-017-0070-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 01/17/2017] [Indexed: 11/24/2022] Open
Abstract
Metal-based drugs have shown early promise as anticancer agents suggesting the potential application of silver(I) complexes as apoptosis-inducing agents. The ability of a silver(I) cyanide containing phosphine complex to induce cell death was evaluated in both a malignant (SNO esophageal cancer) and non-malignant (HDF-a skin and HEK293 kidney) cell lines. A dose-dependent decrease in cell viability was observed in the SNO cells. Light microscopy revealed morphological features indicative of apoptotic cell death. The mode of cell death was confirmed as apoptosis by phosphatidylserine externalization, DNA fragmentation and nuclear condensation. Furthermore, both the non-malignant cell lines showed morphological features indicative of apoptosis when exposed to complex 1. We propose the use of this silver(I) cyanide phosphine complex as an highly effective positive apoptosis control for use in anticancer studies of phosphine complexes.
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Affiliation(s)
- Zelinda Human-Engelbrecht
- Department of Biochemistry, University of Johannesburg, PO Box 524, Auckland Park, Johannesburg, 2006, South Africa
| | - Reinout Meijboom
- Research Centre for Synthesis and Catalysis, Department of Chemistry, University of Johannesburg, PO Box 524, Auckland Park, Johannesburg, 2006, South Africa
| | - Marianne J Cronjé
- Department of Biochemistry, University of Johannesburg, PO Box 524, Auckland Park, Johannesburg, 2006, South Africa.
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Ghisolfi A, Fliedel C, de Frémont P, Braunstein P. Mono- and polynuclear Ag(i) complexes of N-functionalized bis(diphenylphosphino)amine DPPA-type ligands: synthesis, solid-state structures and reactivity. Dalton Trans 2017; 46:5571-5586. [DOI: 10.1039/c6dt04755f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
DPPA-type ligands (Ph2P)2N(p-Z)C6H4 (Z = H, SMe, OMe) led to Ag(i) complexes of various nuclearities and an unexpected influence of the para-substituent Z is observed, including for CH2Cl2 activation.
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Affiliation(s)
- Alessio Ghisolfi
- Université de Strasbourg
- CNRS
- CHIMIE UMR 7177
- Laboratoire de Chimie de Coordination
- 67081 Strasbourg
| | - Christophe Fliedel
- Laboratoire de Chimie de Coordination (LCC)
- CNRS – UPR 8241
- F-31077 Toulouse Cedex 4
- France
| | - Pierre de Frémont
- Université de Strasbourg
- CNRS
- CHIMIE UMR 7177
- Equipe de Synthèse
- Réactivité et Catalyse Organométallique
| | - Pierre Braunstein
- Université de Strasbourg
- CNRS
- CHIMIE UMR 7177
- Laboratoire de Chimie de Coordination
- 67081 Strasbourg
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Artem'ev AV, Bagryanskaya IY, Doronina EP, Tolstoy PM, Gushchin AL, Rakhmanova MI, Ivanov AY, Suturina AO. A new family of clusters containing a silver-centered tetracapped [Ag@Ag4(μ3-P)4] tetrahedron, inscribed within a N12 icosahedron. Dalton Trans 2017; 46:12425-12429. [DOI: 10.1039/c7dt02597a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A novel family of clusters, containing Ag-centered P-tetracapped tetrahedron, [Ag@Ag4(μ3-P)4], inscribed within a N12 icosahedron, is presented.
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Affiliation(s)
- Alexander V. Artem'ev
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of Russian Academy of Sciences
- Novosibirsk 630090
- Russia
| | - Irina Yu. Bagryanskaya
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry
- Siberian Branch of Russian Academy of Sciences
- Novosibirsk 630090
- Russia
- Novosibirsk State University
| | - Evgeniya P. Doronina
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy of Sciences
- 664033 Irkutsk
- Russia
| | - Peter M. Tolstoy
- St. Petersburg State University
- Center for Magnetic Resonance
- St. Petersburg 198504
- Russia
| | - Artem L. Gushchin
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of Russian Academy of Sciences
- Novosibirsk 630090
- Russia
- Novosibirsk State University
| | - Mariana I. Rakhmanova
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of Russian Academy of Sciences
- Novosibirsk 630090
- Russia
| | - Alexander Yu. Ivanov
- St. Petersburg State University
- Center for Magnetic Resonance
- St. Petersburg 198504
- Russia
| | - Anastasiya O. Suturina
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy of Sciences
- 664033 Irkutsk
- Russia
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45
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Vaughan TF, Spencer JL. Transition metal complexes of the pyridylphosphine ligand o-C 6H 4(CH 2PPy 2) 2. Dalton Trans 2016; 45:16826-16837. [PMID: 27711717 DOI: 10.1039/c6dt02041k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and coordination behaviour of the pyridylphosphine ligand o-C6H4(CH2PPy2)2 (Py = 2-pyridyl) are reported. The phosphine selenide was synthesised and the 1JPSe value of 738 Hz indicates the phosphorus atoms have a similar basicity to PPh3. The ligand reacts with platinum(ii) and palladium(ii) complexes to give simple diphosphine complexes of the type [MX2(PP)] (M = Pt, X = Cl, I, Me, Et; M = Pd, X = Cl, Me). When the ligand is reacted with chloromethyl(hexa-1,5-diene)platinum the [PtClMe(PP)] complex results, from which a series of unsymmetrical platinum complexes of the type [PtMeL(PP)]+ (L = PPh3, PTA, SEt2 and pyridine) can be made. This enabled the comparison of the cis and trans influences of a range of ligands. The following cis influence series was compiled based on 31P NMR data of these complexes: Py ≈ Cl > SEt2 > PTA > PPh3. Reaction of [PtClMe(PP)] with NaCH(SO2CF3)2 and carbon monoxide slowly formed an acyl complex, where the CO had inserted in the Pt-Me bond. Attempts to achieve P,P,N chelation, through abstracting the chloride ligand in [PtClMe(PP)], were unsuccessful. When the ligand reacted with platinum(0), palladium(0) and silver(i) complexes the bis-chelated complexes [M(PP)2] (M = Pt, Pd) and [Ag(PP)2]+ were formed respectively. Reaction of the ligand with [Ir(COD)(μ-Cl)]2 formed [IrCl(PP)(COD)]. When the chloride ligand was abstracted, the pyridyl nitrogens were able to interact with the iridium centre facilitating the isomerisation of the 1,2,5,6-η4-COD ligand to a 1-κ-4,5,6-η3-C8H12 ligand. The X-ray crystal structure of [Ir(1-κ-4,5,6-η3-C8H12)(PPN)]BPh4 confirmed the P,P,N chelation mode of the ligand. In solution, this complex displayed hemilabile behaviour, with the pyridyl nitrogens exchanging at a rate faster than the NMR time scale at room temperature.
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Affiliation(s)
- Teresa F Vaughan
- School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington, New Zealand.
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46
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Potgieter K, Cronjé MJ, Meijboom R. Synthesis of silver(I) p-substituted phenyl diphenyl phosphine complexes with the evaluation of the toxicity on a SNO cancer cell line. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.08.048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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47
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Al-Masri HT, Moussa Z. Synthesis and Spectroscopic Properties of Pd IIand Pt IIComplexes with Monosulfide and Monoselenide Bis(phosphanyl)amine Ligands. Z Anorg Allg Chem 2016. [DOI: 10.1002/zaac.201600191] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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48
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Zavras A, Khairallah GN, Krstić M, Girod M, Daly S, Antoine R, Maitre P, Mulder RJ, Alexander SA, Bonačić-Koutecký V, Dugourd P, O'Hair RAJ. Ligand-induced substrate steering and reshaping of [Ag2(H)](+) scaffold for selective CO2 extrusion from formic acid. Nat Commun 2016; 7:11746. [PMID: 27265868 PMCID: PMC4897753 DOI: 10.1038/ncomms11746] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 04/26/2016] [Indexed: 12/02/2022] Open
Abstract
Metalloenzymes preorganize the reaction environment to steer substrate(s) along the required reaction coordinate. Here, we show that phosphine ligands selectively facilitate protonation of binuclear silver hydride cations, [LAg2(H)]+ by optimizing the geometry of the active site. This is a key step in the selective, catalysed extrusion of carbon dioxide from formic acid, HO2CH, with important applications (for example, hydrogen storage). Gas-phase ion-molecule reactions, collision-induced dissociation (CID), infrared and ultraviolet action spectroscopy and computational chemistry link structure to reactivity and mechanism. [Ag2(H)]+ and [Ph3PAg2(H)]+ react with formic acid yielding Lewis adducts, while [(Ph3P)2Ag2(H)]+ is unreactive. Using bis(diphenylphosphino)methane (dppm) reshapes the geometry of the binuclear Ag2(H)+ scaffold, triggering reactivity towards formic acid, to produce [dppmAg2(O2CH)]+ and H2. Decarboxylation of [dppmAg2(O2CH)]+ via CID regenerates [dppmAg2(H)]+. These gas-phase insights inspired variable temperature NMR studies that show CO2 and H2 production at 70 °C from solutions containing dppm, AgBF4, NaO2CH and HO2CH. Designing catalysts and understanding the influence of ligands for particular transformations remains a highly challenging task. Here, the authors show that bisphosphine ligands can alter the geometry of the active site in silver catalysts, driving protonation and ultimately extrusion of carbon dioxide from formic acid.
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Affiliation(s)
- Athanasios Zavras
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia.,ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, 30 Flemington Road, Parkville, Victoria 3010, Australia
| | - George N Khairallah
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia.,ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, 30 Flemington Road, Parkville, Victoria 3010, Australia
| | - Marjan Krstić
- Center of Excellence for Science and Technology - Integration of Mediterranean region (STIM) at Interdisciplinary Center for Advanced Science and Technology (ICAST), University of Split, Meštrovićevo šetalište 45, 21000 Split, Croatia
| | - Marion Girod
- Institut des Sciences Analytiques, Université de Lyon, Université Lyon 1-CNRS-ENS Lyon, 69100 Villeurbanne, France
| | - Steven Daly
- Institut Lumière Matière, Université Lyon 1-CNRS, Université de Lyon 69622 Villeurbanne Cedex, France
| | - Rodolphe Antoine
- Institut Lumière Matière, Université Lyon 1-CNRS, Université de Lyon 69622 Villeurbanne Cedex, France
| | - Philippe Maitre
- Laboratoire de Chimie Physique, Bâtiment 349, Université Paris-Sud, CNRS, Université Paris-Saclay, F-91405 Orsay, France
| | - Roger J Mulder
- CSIRO Manufacturing, Bayview Avenue, Clayton, Victoria 3168, Australia
| | - Stefanie-Ann Alexander
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia.,ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, 30 Flemington Road, Parkville, Victoria 3010, Australia
| | - Vlasta Bonačić-Koutecký
- Center of Excellence for Science and Technology - Integration of Mediterranean region (STIM) at Interdisciplinary Center for Advanced Science and Technology (ICAST), University of Split, Meštrovićevo šetalište 45, 21000 Split, Croatia.,Humboldt-Universität Berlin, Institut für Chemie, 12489 Berlin, Germany
| | - Philippe Dugourd
- Institut Lumière Matière, Université Lyon 1-CNRS, Université de Lyon 69622 Villeurbanne Cedex, France
| | - Richard A J O'Hair
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia.,ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, 30 Flemington Road, Parkville, Victoria 3010, Australia
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Silver and Copper Complexes with closo-Polyhedral Borane, Carborane and Metallacarborane Anions: Synthesis and X-ray Structure. CRYSTALS 2016. [DOI: 10.3390/cryst6050060] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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50
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Liu M, Fang L, Li Y, Gong M, Xu A, Deng Z. "Flash" preparation of strongly coupled metal nanoparticle clusters with sub-nm gaps by Ag + soldering: toward effective plasmonic tuning of solution-assembled nanomaterials. Chem Sci 2016; 7:5435-5440. [PMID: 30034682 PMCID: PMC6021751 DOI: 10.1039/c6sc01407k] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Accepted: 05/01/2016] [Indexed: 01/09/2023] Open
Abstract
Noble metal nanoparticle oligomers are important in applications including plasmonics, catalysis, and molecular sensing. These nanostructural units featuring abundant inter-particle junctions are helpful for a physical/chemical understanding of structure-activity relationships of self-assembled metamaterials. A simple, rapid, and potentially general strategy for the preparation of monodisperse nanoparticle clusters in a homogeneous solution is highly desired for fundamental research toward liquid metamaterials and chemical/biological applications, but this is however very challenging. Here we report an Ag+ soldering strategy to prepare strongly coupled plasmonic (Au) and catalytic (Pt, Au@Pd (Au core with a Pd shell)) nanoparticle clusters almost instantly (<1 min) in a solution without special synthetic efforts, complicated surface decorations, or structure-directing templates. The resulting clusters are isolatable by agarose gel electrophoresis, resulting in mechanically stable products in high purity. The optical extinctions of Au nanodimers (the simplest and most basic form of a coupled structure) exhibit prominent longitudinal plasmonic coupling for nanoparticles down to 13.3 nm in diameter. Theoretical simulations attribute the strong coupling to the existence of a sub-nm gap (c.a. 0.76 nm) between soldered particles, suggesting an ideal (stable, soluble, monodisperse, and weakly passivated) substrate for surface enhanced Raman scattering (SERS) applications.
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Affiliation(s)
- Miao Liu
- CAS Key Laboratory of Soft Matter Chemistry & Collaborative Innovation Center of Suzhou Nano Science and Technology , Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , China .
| | - Lingling Fang
- CAS Key Laboratory of Soft Matter Chemistry & Collaborative Innovation Center of Suzhou Nano Science and Technology , Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , China .
| | - Yulin Li
- CAS Key Laboratory of Soft Matter Chemistry & Collaborative Innovation Center of Suzhou Nano Science and Technology , Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , China .
| | - Ming Gong
- Engineering and Materials Science Experiment Center , University of Science and Technology of China , Hefei , Anhui 230027 , China
| | - An Xu
- Key Laboratory of Ion Beam Bioengineering , Hefei Institutes of Physical Science , Chinese Academy of Sciences , Hefei , Anhui 230031 , China
| | - Zhaoxiang Deng
- CAS Key Laboratory of Soft Matter Chemistry & Collaborative Innovation Center of Suzhou Nano Science and Technology , Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , China .
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