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Marques HM. The inorganic chemistry of the cobalt corrinoids - an update. J Inorg Biochem 2023; 242:112154. [PMID: 36871417 DOI: 10.1016/j.jinorgbio.2023.112154] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 01/23/2023] [Accepted: 01/26/2023] [Indexed: 02/05/2023]
Abstract
The inorganic chemistry of the cobalt corrinoids, derivatives of vitamin B12, is reviewed, with particular emphasis on equilibrium constants for, and kinetics of, their axial ligand substitution reactions. The role the corrin ligand plays in controlling and modifying the properties of the metal ion is emphasised. Other aspects of the chemistry of these compounds, including their structure, corrinoid complexes with metals other than cobalt, the redox chemistry of the cobalt corrinoids and their chemical redox reactions, and their photochemistry are discussed. Their role as catalysts in non-biological reactions and aspects of their organometallic chemistry are briefly mentioned. Particular mention is made of the role that computational methods - and especially DFT calculations - have played in developing our understanding of the inorganic chemistry of these compounds. A brief overview of the biological chemistry of the B12-dependent enzymes is also given for the reader's convenience.
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Affiliation(s)
- Helder M Marques
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa.
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2
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Si CD, Zhang J, Pan FF, Wang P, Liao TL, Zheng WH, Yuan K, Liu JC. Zn/Cu Complexes Constructed through Selective in Situ Br−Cl Exchange: Synthesis, Structures, Properties, and DFT Insights into the Cu-Catalyzed Mechanism. CrystEngComm 2022. [DOI: 10.1039/d2ce00128d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two coordination polymers (CPs) [Cu2(L1)(µ3-OH)(H2O)]n (1) and {[Zn4(L)2(4,4′-bipy)3]•4H2O}n (2) were synthesized under solvothermal conditions. It is unexpectedly found the transformation of aryl−Br to aryl−Cl (Br-Cl exchange) in the formation of...
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3
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Tzeng BC, Lin IL, Chen WH, Lee GH. Anion-Recognition Studies of a Rhenium(I) 4-Mercaptopyridine Compound and Its Ligand-Coupling Products. Inorg Chem 2021; 60:4764-4771. [PMID: 33721490 DOI: 10.1021/acs.inorgchem.0c03723] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reaction of Re(CO)5Cl with 4-mercaptopyridine (4-PySH) led to the formation of [Re(CO)3(4-HPyS)3]Cl (1), showing three hydrogen-bonding donors of 4-PySH ligands as well as a characteristic ligand-to-metal charge-transfer absorption at ca. 380 nm. In this regard, a variety of anions, i.e., CN-, OAc-, F-, Cl-, Br-, I-, PF6-, NO3-, ClO4-, and H2PO4-, were examined to study anion-recognition studies through hydrogen-bonding functionalities. Upon the addition of CN- to a methanolic solution of complex 1, a remarkable spectral change with an isosbestic point at ca. 314 nm in the absorption spectra was observed, with a binding constant (Kb) calculated to be 24770 M-1. Moreover, the OAc- anion also shows a similar trend, but a mild spectral change, with Kb calculated to be 2170 M-1. Unlike those of CN- and OAc-, the addition of F-, Cl-, Br-, and I- anions causes a less pronounced spectral change with an isosbestic point at ca. 350 nm and Kb calculated to be 2863-750 M-1. However, almost no spectral change can be observed for other anions (i.e., PF6-, NO3-, H2PO4-, and ClO4-). Interestingly, the molecular loops of [Re(CO)3Cl(Py2S2)]2 (2; Py2S2 = 4,4'-dipyridyl disulfide) and [Re(CO)3Cl(Py2S)0.35(Py2S2)0.65]2 (3; Py2S = 4,4'-dipyridyl sulfide) can be isolated and structurally characterized by X-ray diffraction, where those crystals were grown from diethyl ether diffusion into a methanolic solution of complex 1 with [Bu4N]CN and [Bu4N]NO3, respectively. It is noted that such unusual ligand-coupling reactions toward the homoligand and hybrid-ligand loops of complexes 2 and 3 can be achieved at room temperature in this study.
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Affiliation(s)
- Biing-Chiau Tzeng
- Department of Chemistry and Biochemistry, National Chung Cheng University, 168 University Road, Min-Hsiung, Chia-Yi 621, Taiwan
| | - I-Lin Lin
- Department of Chemistry and Biochemistry, National Chung Cheng University, 168 University Road, Min-Hsiung, Chia-Yi 621, Taiwan
| | - Wen-Hui Chen
- Department of Chemistry and Biochemistry, National Chung Cheng University, 168 University Road, Min-Hsiung, Chia-Yi 621, Taiwan
| | - Gene-Hsiang Lee
- Department of Chemistry, National Taiwan University, 1 Roosevelt Road, Section 4, Taipei 106, Taiwan
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4
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Tzeng BC, Chao A, Lin MC, Lee GH, Kuo TS. Molecular Re I Cages: Structural and Luminescent Properties. Chemistry 2017; 23:18033-18040. [PMID: 29034594 DOI: 10.1002/chem.201704122] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Indexed: 11/09/2022]
Abstract
Versatile building block [{Re(CO)4 }3 (C3 N3 S3 )] (1 a; C3 N3 S3 =cyanurate trianion) reacts with linear dipyridyl ligands [i.e., pyrazine (pz), 4,4'-bipyridine (bpy), 1,2-bis(4-pyridyl)ethylene (bpe), bis(4-pyridyl)acetylene (bpa), and 1,4-bis(pyridyl-4-ylethynyl)benzene (bpb)] and a tripyridyl ligand [1,3,5-tris(4-pyridylethynyl)benzene (tpb)] to afford a series of molecular cages [{Re(CO)3 }6 (L)3 (C3 N3 S3 )2 ] [L=pz (2), bpy (3), bpe (4), bpa (5), bpb (6)] and [{Re(CO)3 }9 (tpb)3 (C3 N3 S3 )3 ] (7) under solvothermal conditions. Various structural dimensions and motifs can be systematically tuned and obtained by using different dipyridyl and tripyridyl ligands in the reactions. The molecular cages of hexanuclear complexes 2-6 containing dipyridyl ligands feature interesting trigonal-prismatic structures with different dimensions. Furthermore, nonanuclear complex 7 has a novel triangular-star structure, and three benzene rings of tpb ligands form a triple-decker arrangement with significant π⋅⋅⋅π interactions having distances of 3.490(1) and 3.528(1) Å. In addition, molecular cages 1-3 and 5-7 exhibit luminescence in the solid state, and their luminescent properties were also studied.
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Affiliation(s)
- Biing-Chiau Tzeng
- Department of Chemistry and Biochemistry, National Chung Cheng University, 168 University Rd., Min-Hsiung, Chiayi, 62102, Taiwan
| | - An Chao
- Department of Chemistry and Biochemistry, National Chung Cheng University, 168 University Rd., Min-Hsiung, Chiayi, 62102, Taiwan
| | - Mei-Chun Lin
- Department of Chemistry and Biochemistry, National Chung Cheng University, 168 University Rd., Min-Hsiung, Chiayi, 62102, Taiwan
| | - Gene-Hsiang Lee
- Department of Chemistry, National (Taiwan) University, 1, Sec. 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Ting-Shen Kuo
- Department of Chemistry, National (Taiwan) Normal University, 88, Sec. 4, Ting-Chow Road, Taipei, 11677, Taiwan
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5
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Li Q, Yu MH, Xu J, Li AL, Hu TL, Bu XH. Two new metal–organic frameworks based on tetrazole–heterocyclic ligands accompanied by in situ ligand formation. Dalton Trans 2017; 46:3223-3228. [DOI: 10.1039/c7dt00005g] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two new MOFs have been constructed by the Dimroth rearrangement of the in situ generated organic ligand 5-((2H-tetrazol-5-yl)amino)isophthalic acid (H3L).
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Affiliation(s)
- Qin Li
- School of Materials Science and Engineering
- National Institute for Advanced Materials
- Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry
- Nankai University
- Tianjin 300350
| | - Mei-Hui Yu
- School of Materials Science and Engineering
- National Institute for Advanced Materials
- Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry
- Nankai University
- Tianjin 300350
| | - Jian Xu
- School of Materials Science and Engineering
- National Institute for Advanced Materials
- Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry
- Nankai University
- Tianjin 300350
| | - Ai-Lin Li
- School of Materials Science and Engineering
- National Institute for Advanced Materials
- Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry
- Nankai University
- Tianjin 300350
| | - Tong-Liang Hu
- School of Materials Science and Engineering
- National Institute for Advanced Materials
- Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry
- Nankai University
- Tianjin 300350
| | - Xian-He Bu
- School of Materials Science and Engineering
- National Institute for Advanced Materials
- Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry
- Nankai University
- Tianjin 300350
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6
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Munzert SM, Schwarz G, Kurth DG. Kinetic Studies of the Coordination of Mono- and Ditopic Ligands with First Row Transition Metal Ions. Inorg Chem 2016; 55:2565-73. [PMID: 26908136 DOI: 10.1021/acs.inorgchem.5b02931] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reactions of the ditopic ligand 1,4-bis(2,2':6',2″-terpyridin-4'-yl)benzene (1) as well as the monotopic ligands 4'-phenyl-2,2':6',2″-terpyridine (2) and 2,2':6',2″-terpyridine (3) with Fe(2+), Co(2+), and Ni(2+) in solution are studied. While the reaction of 1 with Fe(2+), Co(2+), and Ni(2+) results in metallo-supramolecular coordination polyelectrolytes (MEPEs), ligands 2 and 3 give mononuclear complexes. All compounds are analyzed by UV/vis and fluorescence spectroscopy. Fluorescence spectroscopy indicates that protonation as well as coordination to Zn(2+) leads to an enhanced fluorescence of the terpyridine ligands. In contrast, Fe(2+), Co(2+), or Ni(2+) quench the fluorescence of the ligands. The kinetics of the reactions are studied by stopped-flow fluorescence spectroscopy. Analysis of the measured data is presented and the full kinetic rate laws for the coordination of the terpyridine ligands 1, 2, and 3 to Fe(2+), Co(2+), and Ni(2+) are presented. The coordination occurs within a few seconds, and the rate constant increases in the order Ni(2+) < Co(2+) < Fe(2+). With the rate constants at hand, the polymer growth of Ni-MEPE is computed.
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Affiliation(s)
- Stefanie Martina Munzert
- Chemische Technologie der Materialsynthese, Julius-Maximilians-Universität Würzburg , Röntgenring 11, D-97070 Würzburg, Germany
| | - Guntram Schwarz
- Chemische Technologie der Materialsynthese, Julius-Maximilians-Universität Würzburg , Röntgenring 11, D-97070 Würzburg, Germany
| | - Dirk G Kurth
- Chemische Technologie der Materialsynthese, Julius-Maximilians-Universität Würzburg , Röntgenring 11, D-97070 Würzburg, Germany
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7
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Durango-García CJ, Jalife S, Cabellos JL, Martínez SH, Jimenez-Halla JOC, Pan S, Merino G, Montiel-Palma V. Back to basics: identification of reaction intermediates in the mechanism of a classic ligand substitution reaction on Vaska's complex. RSC Adv 2016. [DOI: 10.1039/c5ra20969b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The mechanism of methylation of Vaska's complextrans-[ClIr(CO)(PPh3)2] by trimethylgallium was studied and the identification of the spectroscopically detected intermediates was achieved with the aid of computational methods.
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Affiliation(s)
- Clara J. Durango-García
- Centro de Investigaciones Químicas
- Universidad Autónoma del Estado de Morelos
- Cuernavaca
- Mexico
- Facultad de Ciencias
| | - Said Jalife
- Departamento de Física Aplicada
- CINVESTAV Unidad Mérida
- Mérida 97310
- Mexico
| | - José Luis Cabellos
- Departamento de Física Aplicada
- CINVESTAV Unidad Mérida
- Mérida 97310
- Mexico
| | - Saul H. Martínez
- Departamento de Física Aplicada
- CINVESTAV Unidad Mérida
- Mérida 97310
- Mexico
| | | | - Sudip Pan
- Department of Chemistry and Center for Theoretical Studies
- Indian Institute of Technology Kharagpur
- India
| | - Gabriel Merino
- Departamento de Física Aplicada
- CINVESTAV Unidad Mérida
- Mérida 97310
- Mexico
| | - Virginia Montiel-Palma
- Centro de Investigaciones Químicas
- Universidad Autónoma del Estado de Morelos
- Cuernavaca
- Mexico
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8
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Han ZG, Liu YP, Zhao XF, Yan JS, Zhai XL. Polyanionic clusters embedded in lattice-type hydrogen bonding networks involving in situ bond activation and coupling of organic cations. CrystEngComm 2015. [DOI: 10.1039/c5ce01220a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Grid-type hydrogen bonding networks of organic cations are used to capture pseudo-spherical Keggin-type anionic clusters.
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Affiliation(s)
- Zhan-Gang Han
- College of Chemistry and Material Science
- Hebei Normal University
- Shijiazhuang, China
| | - Yun-Ping Liu
- College of Chemistry and Material Science
- Hebei Normal University
- Shijiazhuang, China
| | - Xiao-Fang Zhao
- College of Chemistry and Material Science
- Hebei Normal University
- Shijiazhuang, China
| | - Jin-Shuang Yan
- College of Chemistry and Material Science
- Hebei Normal University
- Shijiazhuang, China
| | - Xue-Liang Zhai
- College of Chemistry and Material Science
- Hebei Normal University
- Shijiazhuang, China
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9
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Ganguly S, Sanyal R, Mondal R. Tuning Cu
II
Coordination Polymers Derived from a Bis(pyrazolecarboxylate) Ligand by Solvothermal C–H Bond Activation: Synthesis, Structures, Catalysis, and Magnetic Properties. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402642] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Sumi Ganguly
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Raja S. C. Mullick Road, Kolkata 700032, India
| | - Ria Sanyal
- Department of Chemistry, University of Calcutta, 92, A. P. C Road, Kolkata 700009, India
| | - Raju Mondal
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Raja S. C. Mullick Road, Kolkata 700032, India, http://www.iacs.res.in/inorg/icrm/
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10
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Tzeng BC, Chao A, Banik M. Ligand-coupling assembly of Re(i)-thiolate complexes. Dalton Trans 2014; 43:11510-5. [DOI: 10.1039/c4dt00791c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Complexes 2 and 4 were synthesized under similar reaction conditions except that different ligands of HNS2 and HNOS, respectively, were used. Two dinuclear structures of 2 and 4 with two similar in situ ligand analogues show distinct conformations, anti and syn forms, respectively.
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Affiliation(s)
- Biing-Chiau Tzeng
- Department of Chemistry and Biochemistry
- National Chung Cheng University
- Chiayi 62102, Taiwan
| | - An Chao
- Department of Chemistry and Biochemistry
- National Chung Cheng University
- Chiayi 62102, Taiwan
| | - Manas Banik
- Department of Chemistry and Biochemistry
- National Chung Cheng University
- Chiayi 62102, Taiwan
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11
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Kanoo P, Matsuda R, Sato H, Li L, Jeon HJ, Kitagawa S. In Situ Generation of Functionality in a Reactive Haloalkane-Based Ligand for the Design of New Porous Coordination Polymers. Inorg Chem 2013; 52:10735-7. [DOI: 10.1021/ic401924d] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Prakash Kanoo
- Institute for Integrated
Cell-Material Sciences (WPI-iCeMS), Kyoto University, Nishikyo-ku, Katsura, Kyoto 615-8510, Japan
| | - Ryotaro Matsuda
- Institute for Integrated
Cell-Material Sciences (WPI-iCeMS), Kyoto University, Nishikyo-ku, Katsura, Kyoto 615-8510, Japan
| | - Hiroshi Sato
- Institute for Integrated
Cell-Material Sciences (WPI-iCeMS), Kyoto University, Nishikyo-ku, Katsura, Kyoto 615-8510, Japan
| | - Liangchun Li
- Institute for Integrated
Cell-Material Sciences (WPI-iCeMS), Kyoto University, Nishikyo-ku, Katsura, Kyoto 615-8510, Japan
| | - Hyung Joon Jeon
- Institute for Integrated
Cell-Material Sciences (WPI-iCeMS), Kyoto University, Nishikyo-ku, Katsura, Kyoto 615-8510, Japan
| | - Susumu Kitagawa
- Institute for Integrated
Cell-Material Sciences (WPI-iCeMS), Kyoto University, Nishikyo-ku, Katsura, Kyoto 615-8510, Japan
- Department of Synthetic
Chemistry and Biological Chemistry, Graduate School of
Engineering, Kyoto University, Nishikyo-ku,
Katsura, Kyoto 615-8510, Japan
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12
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Lemons BG, Richens DT, Anderson A, Sedgwick M, Crans DC, Johnson MD. Stabilization of a vanadium(v)–catechol complex by compartmentalization and reduced solvation inside reverse micelles. NEW J CHEM 2013. [DOI: 10.1039/c2nj40524e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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13
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Xu WY, Tian XZ, Feng XF, Huang HX, Sun GM, Song YM, Luo F. Three new acylamide ligands formed in situ and their application in constructing metal–organic frameworks. CrystEngComm 2012. [DOI: 10.1039/c2ce26034d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Cai B, Ren Y, Jiang H, Zheng D, Shi D, Qian Y, Chen J. A mixed-valence lanthanide metal–organic framework, templated by 2,2′-bipyridine formed in situ reaction: synthesis, structure, and luminescent properties. CrystEngComm 2012. [DOI: 10.1039/c2ce25160d] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Yong GP, Zhang YM, Zhang B. Hydrothermal syntheses, crystal structures and properties of novel quinone biradical and mixed-valence copper coordination polymer with semiquinone radical ligand generated in situ. CrystEngComm 2012. [DOI: 10.1039/c2ce26418h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Yuan ZZ, Luo F, Song YM, Sun GM, Tian XZ, Huang HX, Zhu Y, Feng XF, Luo MB, Liu SJ, Xu WY. Solvent-induced supramolecular isomers, structural diversity, and unprecedented in situ formation of both inorganic and organic ions in inorganic–organic mercury(ii) complexes. Dalton Trans 2012; 41:12670-3. [DOI: 10.1039/c2dt31819a] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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17
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Kuchison AM, Wolf MO, Patrick BO. Photophysical and electrochemical properties of Ru(II) complexes containing tridentate bisphosphino-oligothiophene ligands. Dalton Trans 2011; 40:6912-21. [PMID: 21643615 DOI: 10.1039/c1dt10217f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nine Ru(II) complexes containing the conjugated oligothiophene ligands 3,3''-bis(diphenylphosphino)-2,2':5',2''-terthiophene (P(2)T(3)) and 4',3'''-bis(diphenylphosphino)-3,3''''-dihexyl- 2,2':5',2'':5'',2''':5''',2''''-pentathiophene (P(2)T(5)) were prepared and characterized. P(2)T(3) and P(2)T(5) bond as tridentate ligands and three of the complexes (1, 2 and 5) form green five-coordinate Ru(II) complexes in solution. Cyclic voltammetry, variable temperature UV-vis spectroscopy and time-resolved transient absorption spectroscopy were used to characterize the electronic properties of the complexes. Increased conjugation in the complexes containing the P(2)T(5) ligand resulted in a lowering of the oxidation potential of the oligothiophene, but electropolymerization was not observed. The electronic spectra were dominated by π-π* transitions. All of the complexes were non-emissive both at room temperature and low temperature, indicating the excited state decays by other, non-radiative pathways. The transient absorption spectrum of complex 7 shows a species with a band at 475 nm and a lifetime of ∼100 ns, assigned to a ligand-based triplet state.
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Affiliation(s)
- Angela M Kuchison
- Department of Chemistry, 2036 Main Mall, University of British Columbia, Vancouver, BC V6T 1Z1, Canada
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18
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Sivaramakrishna A, Clayton HS, Muralikrishna U. Synthesis, structure, chemistry, and applications of tetravalent nickel complexes. J COORD CHEM 2011. [DOI: 10.1080/00958972.2011.568614] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Akella Sivaramakrishna
- a Chemistry Division, School of Advanced Sciences , VIT University , Vellore 632 014 , Tamil Nadu , India
| | | | - Upadhyayula Muralikrishna
- c Department of Engineering Chemistry , Andhra University , Visakhapatnam 530 003 , Andhra Pradesh , India
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19
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Deng ZP, Huo LH, Xu H, Zhao H, Ng SW, Gao S. The first metal-organic framework containing an unprecedented in situ-generated C-substituted hexamethylenetetramine ligand. Dalton Trans 2011; 40:1224-6. [PMID: 21212868 DOI: 10.1039/c0dt01153c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first metal-organic framework containing an unprecedented in situ-generated C-substituted hexamethylenetetramine ligand has been successfully prepared by the reaction of silver nitrate, 4-formylbenzoic acid and hexamethylenetetramine under traditional solution conditions, which holds the unusual (3,4)-connected topological network.
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Affiliation(s)
- Zhao-Peng Deng
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University, Harbin, 150080, PR China
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20
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Kanoo P, Haldar R, Cyriac ST, Maji TK. Coordination driven axial chirality in a microporous solid assembled from an achiral linker via in situ C–N coupling. Chem Commun (Camb) 2011; 47:11038-40. [DOI: 10.1039/c1cc13877d] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Fang ZL, Yu RM, Zhang J, Lu CZ. Novel ligands and complexes in situ generated from the copper-mediated conversions of 2,5-bis(2-hydroxyphenyl)-1,3,4-oxadiazole: structures and magnetic properties. CrystEngComm 2011. [DOI: 10.1039/c0ce00907e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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22
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Yu XY, Ye L, Zhang X, Cui XB, Zhang JP, Xu JQ, Hou Q, Wang TG. Fluorescent metal–organic polymers of zinc and cadmium from hydrothermal in situ acylation reaction. Dalton Trans 2010; 39:10617-25. [PMID: 20886135 DOI: 10.1039/c002946g] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Xiao-Yang Yu
- College of Chemistry and State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun, Jilin 130021, China
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23
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Liu WT, Ou YC, Xie YL, Lin Z, Tong ML. Photoluminescent Metal-Organic Nanotubes via Hydrothermal in Situ Ligand Reactions. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900555] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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24
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Zheng LL, Leng JD, Liu WT, Zhang WX, Lu JX, Tong ML. Cu2+-Mediated Nucleophilic Addition of Different Nucleophiles to Dicyanamide - Synthesis, Structures, and Magnetic Properties of a Family of Mononuclear, Trinuclear, Hexanuclear, and Polymeric Copper(II) Complexes. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800486] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Fan LL, Li CJ, Meng ZS, Tong ML. Metal-Mediated One-Step In Situ Oxidation of 2,9-Dimethyl-1,10-phenanthroline and Formation of Transition-Metal and Lanthanoid Complexes. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800499] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Gossage RA, Jenkins HA, Jones ND, Jones RC, Yates BF. Pre-catalyst resting states: a kinetic, thermodynamic and quantum mechanical analyses of [PdCl2(2-oxazoline)2] complexes. Dalton Trans 2008:3115-22. [PMID: 18521454 DOI: 10.1039/b801951g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The treatment of cold ( approximately 3 degrees C) methanolic solutions of Li(2)PdCl(4) with two equivalents of 2-phenyl-2-oxazoline (Phox) results in the isolation of [PdCl(2)(Phox)(2)] (3). This complex undergoes remarkably slow isomerisation (CHCl(3)-d) at room temperature to a corresponding thermodynamic form. In addition to a theoretical treatment (DFT), the isomerisation behaviour has been analysed both kinetically and thermodynamically. These investigations lead to the conclusion that the initially formed (i.e. kinetic) isomer of 3 is the cis-form which undergoes conversion to the corresponding thermodynamic trans-form via a dissociative (D) mechanism involving loss of a Phox ligand. The activation parameters DeltaS(double dagger) and DeltaH(double dagger) are found to be +304 (+/-3) J K(-1) mol(-1) and +176 (+/-1) kJ mol(-1), respectively and indicate a high barrier to Pd-N bond cleavage under these conditions. The thermodynamic parameters show the expected endothermic nature of this process (+140 +/- 17 kJ mol(-1)) and a slight positive overall entropy (DeltaS degrees = +17 +/- 2 J K(-1) mol(-1)); this latter parameter is presumably due to the formation of the lower dipole moment trans-product when compared to the cis-isomer. Calculated (DFT) values of DeltaG(double dagger) and DeltaH(double dagger) are in excellent agreement to those found experimentally. Further theoretical investigation suggests that two 14-electron three-coordinate T-shaped transition states (i.e., [PdCl(2)(Phox)](double dagger)) are involved; the form pre-disposed to yield the thermodynamic trans-product following re-attachment of the released oxazoline is found to be energetically favoured. The analogous alkyloxazoline system [PdCl(2)(Meox)(2)] (4: Meox = 2-methyl-2-oxazoline) has likewise been investigated. This material gives no indication of cis-trans isomerisation behaviour in solution (NMR) and is shown to exist (X-ray) in the trans-form in the solid-state (as do previously reported crystalline samples of 3). A DFT study of 4 reveals similar values of DeltaS(double dagger) and DeltaH(double dagger) if a D type mechanism were operating to rapidly convert cis- to trans-4. However, a significantly higher thermodynamic stability of the trans-isomer relative to the cis-form is revealed versus similar calculations of the Phox derivative 3. This suggests the possibility that (i) reactions of Meox with Li(2)PdCl(4) may lead directly to the trans-form of [PdCl(2)(Meox)(2)] or alternatively (ii) that alkyloxazoline complexes such as 4 may have a different, and presumably much more rapid, mechanism for isomerisation. The results are placed into the context that isomerisation behaviour, or lack thereof, could play a key preliminary role in later substrate modification. This is due to the fact that [PdX(2)(oxazoline)(2)] compounds are well-known (pre-)catalysts for C-C bond forming chemistry.
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Affiliation(s)
- Robert A Gossage
- The David Upton Hill Laboratories of Inorganic Chemistry, Department of Chemistry, Acadia University, Wolfville, NS B4P 2R6, Canada.
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Chen Y, Song Y, Zhang Y, Lang JP. A tricobalt(II) coordination polymer incorporating in situ generated 5-methyltetrazolate ligands. INORG CHEM COMMUN 2008. [DOI: 10.1016/j.inoche.2008.02.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Zheng LL, Zhang WX, Qin LJ, Leng JD, Lu JX, Tong ML. Isolation of a Pentadentate Ligand and Stepwise Synthesis, Structures, and Magnetic Properties of a New Family of Homo- and Heterotrinuclear Complexes. Inorg Chem 2007; 46:9548-57. [PMID: 17915857 DOI: 10.1021/ic070343z] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ling-Ling Zheng
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Wei-Xiong Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Lian-Jing Qin
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Ji-Dong Leng
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Jun-Xian Lu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Ming-Liang Tong
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China
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Yang J, Ma JF, Liu YY, Ma JC, Batten SR. Organic-Acid Effect on the Structures of a Series of Lead(II) Complexes. Inorg Chem 2007; 46:6542-55. [PMID: 17616185 DOI: 10.1021/ic700613c] [Citation(s) in RCA: 211] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An investigation into the dependence of coordination polymer architectures on organic-acid ligands is reported on the basis of the reaction of Pb(NO3)2 and eight structurally related organic-acid ligands in the presence or absence of N-donor chelating ligands. Eight novel lead(II)-organic architectures, [Pb(adip)(dpdp)]2 1, [Pb(glu)(dpdp)] 2, [Pb(suc)(dpdp)] 3, [Pb(fum)(dpdp)] . H2O 4, [Pb2(oba)(dpdp)2] . 2(dpdp).2(NO3).2H2O 5, [Pb2(1,4-bdc)2(dpdp)2] . H2O 6, [Pb(dpdc)(dpdp)] 7, and [Pb(1,3-bdc)(dpdp)] . H2O 8, where dpdp = dipyrido[3,2-a:2',3'-c]-phenazine, H2adip = adipic acid, H2glu = glutaric acid, H2suc = succinic acid, H2fum = fumaric acid, H2oba = 4,4'-oxybis(benzoic acid), 1,4-H2bdc = benzene-1,4-dicarboxylic acid, H2dpdc = 2,2'-diphenyldicarboxylic acid, and 1,3-H2bdc = benzene-1,3-dicarboxylic acid, were successfully synthesized under hydrothermal conditions through varying the organic-acid linkers and structurally characterized by X-ray crystallography. Compounds 1-8 crystallize in the presence of organic-acid linkers as well as secondary N-donor chelating ligands. Diverse structures were observed for these complexes. 1 and 5 have dinuclear structures, which are further stacked via strong pi-pi interactions to form 2D layers. 2-3 and 6-8 feature chain structures, which are connected by strong pi-pi interactions to result in 2D and 3D supramolecular architectures. Compound 4 contains 2D layers, which are further extended to a 3D structure by pi-pi interactions. A systematic structural comparison of these 8 complexes indicates that the organic-acid structures have essential roles in the framework formation of the Pb(II) complexes.
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Affiliation(s)
- Jin Yang
- Key Lab for Polyoxometalate Science, Department of Chemistry, Northeast Normal University, Changchun, PR China
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Affiliation(s)
- David T Richens
- School of Chemistry, University of St. Andrews, North Haugh, St. Andrews, Scotland, UK.
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Gray TG, Veige AS, Nocera DG. Cooperative Bimetallic Reactivity: Hydrogen Activation in Two-Electron Mixed-Valence Compounds. J Am Chem Soc 2004; 126:9760-8. [PMID: 15291579 DOI: 10.1021/ja0491432] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Reversible dihydrogen uptake by a two-electron mixed-valence di-iridium complex is examined with nonlocal density-functional calculations. Optimized metrics compare favorably with crystal structures of isolated species, and the calculated activation enthalpy of acetonitrile exchange is accurate within experimental error. Dihydrogen attacks the Ir(2) core at Ir(II); the Ir(0) center is electronically saturated and of incorrect orbital parity to interact with H(2). Isomeric eta(2)-H(2) complexes have been located, and harmonic frequency calculations confirm these to be potential energy minima. A transition state links one such complex with the final dihydride; calculated atomic charges suggest a heterolytic H(2) bond scission within the di-iridium coordination sphere. This investigation also establishes a ligand-design criterion for attaining cooperative bimetallic reactivity, namely, that the supporting ligand framework has sufficient mechanical flexibility so that the target complex can accommodate the nuclear reorganizations that accompany substrate activation.
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Affiliation(s)
- Thomas G Gray
- Department of Chemistry 6-335, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, USA
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