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Nandi S, Das K, Datta A, Roy S, Garribba E, Akitsu T, Sinha C. A rare cobalt(III) paramagnetic derivative incorporating 1-alkyl-2-[(o-thioalkyl)phenylazo]imidazole (SMeaaiNEt): EPR, redox and magnetic interpretation. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.03.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Synthesis, spectroscopic, cyclic voltammetry properties and molecular structure of the thiocyanato-N meso-tetratolylporphyrinato zinc(II) ion complex. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.11.080] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Denden Z, Ezzayani K, Saint-Aman E, Loiseau F, Najmudin S, Bonifácio C, Daran JC, Nasri H. Insights on the UV/Vis, Fluorescence, and Cyclic Voltammetry Properties and the Molecular Structures of ZnIITetraphenylporphyrin Complexes with Pseudohalide Axial Azido, Cyanato-N, Thiocyanato-N,and Cyanido Ligands. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201403214] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Datta P, Mallick D, Mondal TK, Sinha C. Structure and photochromism of zinc(II) complexes with 1-alkyl-2-(arylazo)imidazole, and the effect of number of coordinated ligands and halide type on the photochromism. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.01.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Halder S, Saha G, Chand B, Jana A, Mostafa G, Cheng J, Lu TH, Sinha C. Arylazoimidazoliumchloride and chlorometallates: Spectroscopic and structural characterization. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2010.02.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Mondal T, Raghavaiah P, Patra A, Sinha C. Ru(II)–CO complexes of thioarylazoimidazoles: Syntheses, structures, spectroscopy and DFT calculation. INORG CHEM COMMUN 2010. [DOI: 10.1016/j.inoche.2009.12.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ruthenium–carbonyl complexes of 1-alkyl-2-(arylazo)imidazoles: Synthesis, structure, spectra and redox properties. Polyhedron 2008. [DOI: 10.1016/j.poly.2008.06.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Sarker KK, Sardar D, Suwa K, Otsuki J, Sinha C. Cadmium(II) complexes of (arylazo)imidazoles: synthesis, structure, photochromism, and density functional theory calculation. Inorg Chem 2007; 46:8291-301. [PMID: 17824607 DOI: 10.1021/ic7012073] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reaction between CdX2 and 1-alkyl-2-(phenylazo)imidazole (RaaiR') has isolated complexes of composition Cd(RaaiR')2X2 in MeOH or MeCN. Crystallization of Cd(RaaiR')2I2 from N,N-dimethylformamide (DMF) has separated [Cd(RaaiR')I2.DMF], while Cd(RaaiR')2X2 (X = Cl and Br) remains unchanged in its composition upon crystallization under identical conditions. The structure has been established by spectral (UV-vis and 1H NMR) data and confirmation in the latter case by a single-crystal X-ray diffraction study of [Cd(TaiMe)I2.DMF] [where TaiMe = 1-methyl-2-(p-tolylazo)imidazole]. UV-light irradiation in a MeCN solution of Cd(RaaiR')2I2 and [Cd(RaaiR')I2.DMF] shows trans-to-cis isomerization of coordinated azoimidazole. The reverse transformation, cis-to-trans, is very slow with visible light irradiation. Quantum yields (phit-->c) of trans-to-cis isomerization are calculated, and the free ligand shows higher phi values than their cadmium(II) iodo complexes. The cis-to-trans isomerization is a thermally induced process. The activation energy (Ea) of cis-to-trans isomerization is calculated by a controlled-temperature experiment. The effects of the anions (Cl-, Br-, I-, and ClO4-) and the number of coordinated azoimidazoles (RaaiR') [Cd(RaaiR') or Cd(RaaiR')2] on the rate and quantum yields of photochromism are established in this work. A slow rate of photoisomerization of [Cd(RaaiR')4](ClO4)2 compared to Cd(RaaiR')I2 or Cd(RaaiR')2X2 may be associated with the increased mass and rotor volume of the complexes. The rate of isomerization is also dependent on the nature of X and follows the sequence Cd(RaaiR')2Cl2 < Cd(RaaiR')2Br2 < Cd(RaaiR')2I2. It may be related to the size and electronegativity of halide, which reduces the effective molar association in the order of I < Br < Cl and hence the rate. Gaussian 03 calculations of representative complexes and free ligands are used to explain the difference in the rates and quantum yields of photoisomerization.
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Affiliation(s)
- K K Sarker
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 7000 032, India
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Paira M, Dinda J, Lu TH, Paital A, Sinha C. Zn(II), Cd(II) and Hg(II) complexes of 8-aminoquinoline. Polyhedron 2007. [DOI: 10.1016/j.poly.2007.05.021] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ray U, Banerjee D, Gopal Chand B, Cheng J, Lu TH, Sinha C. M–NCO (M=Mn, Zn) complexes of 1-alkyl-2-(arylazo)imidazole: crystal structures of [Mn(MeaaiEt)2(NCO)2] and [Zn(HaaiMe)2(NCO)2] [HaaiMe=1-methyl-2-(phenylazo)imidazole and MeaaiEt=1-ethyl-2-(P-tolylazo)imidazole]. J COORD CHEM 2007. [DOI: 10.1080/00958970500138413] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Umasankar Ray
- a Department of Chemistry , The University of Burdwan , Burdwan 713 104, West Bengal, India
| | - Debasis Banerjee
- a Department of Chemistry , The University of Burdwan , Burdwan 713 104, West Bengal, India
| | - Brojo Gopal Chand
- a Department of Chemistry , The University of Burdwan , Burdwan 713 104, West Bengal, India
| | - Jack Cheng
- b Department of Chemistry , Jadavpur University , Jadavpur, Kolkata 700 032, West Bengal, India
- c Department of Physics , National Tsing-Hua University , Hsinchu 300, Taiwan, ROC
| | - Tian-Huey Lu
- c Department of Physics , National Tsing-Hua University , Hsinchu 300, Taiwan, ROC
| | - Chittaranjan Sinha
- b Department of Chemistry , Jadavpur University , Jadavpur, Kolkata 700 032, West Bengal, India
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Iodo bridged lead(II) compounds of azoimidazoles: Single crystal X-ray structures of [di-iodo-{1-methyl-2-(p-tolylazo)imidazole}lead(II)]n and {1-methyl-3-benzyl-2-(p-tolylazo)imidazolium}m-{tri-iodoplumbate(II)}m. Inorganica Chim Acta 2006. [DOI: 10.1016/j.ica.2006.05.037] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Mathur T, Ray U, Baruri B, Sinha C. Tetrahedral manganese(II) complexes of 1-alkyl-2-(arylazo)imidazoles. X-ray crystal structure of [Mn(HaaiMe)4](ClO4)2·DMF (HaaiMe = 1-methyl-2-(phenylazo)imidazole). J COORD CHEM 2006. [DOI: 10.1080/00958970412331331641] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Tanmoy Mathur
- a Department of Chemistry , The University of Burdwan , Burdwan-713 104, West Bengal, India
| | - Umasankar Ray
- a Department of Chemistry , The University of Burdwan , Burdwan-713 104, West Bengal, India
| | - Bhulendranath Baruri
- b Department of Chemistry , Jadavpur University , Jadavpur, Kolkata 700 032, West Bengal, India
| | - Chittaranjan Sinha
- b Department of Chemistry , Jadavpur University , Jadavpur, Kolkata 700 032, West Bengal, India
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Chand B, Ray U, Mostafa G, Lu TH, Sinha C. Synthesis and characterization of mononuclear and dinuclear zinc-arylazoimidazole complexes. single-crystal x-ray structure of [Zn(HaaiEt)4](ClO4)2 and [Zn(HaaiMe) (μ-1,1-N3)(N3)]2 [HaaiEt = 1-ethyl-2-(phenylazo)imidazole; HaaiMe = 1-methyl-2-(phenylazo)imidazole]. J COORD CHEM 2006. [DOI: 10.1080/00958970410001671156] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Brojogopal Chand
- a Department of Chemistry , The University of Burdwan , Burdwan-713104, India
| | - Umasankar Ray
- a Department of Chemistry , The University of Burdwan , Burdwan-713104, India
| | - Golam Mostafa
- b Department of Physics , National Tsing Hua University , Hsinchu 300, Taiwan, ROC
| | - Tian-Huey Lu
- b Department of Physics , National Tsing Hua University , Hsinchu 300, Taiwan, ROC
| | - Chittaranjan Sinha
- a Department of Chemistry , The University of Burdwan , Burdwan-713104, India
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Zn(II)-azide complexes of diimine and azoimine functions: Synthesis, spectra and X-ray structures. Polyhedron 2006. [DOI: 10.1016/j.poly.2006.01.033] [Citation(s) in RCA: 109] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ray U, Banerjee D, Chantrapromma S, Fun HK, Lin JN, Lu TH, Sinha C. Cobalt(II)–azoimidazole complexes: Structures of [Co(MeaaiMe)4](ClO4)2·H2O and [Co(HaaiMe)2(NCS)2] (MeaaiMe=1-methyl-2-(p-tolylazo)imidazole; HaaiMe=1-methyl-2-(phenylazo)imidazole). Polyhedron 2005. [DOI: 10.1016/j.poly.2005.02.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ray U, Banerjee D, Liou JC, Lin CN, Lu TH, Sinha C. Iron(II) and nickel(II)-thiocyanato complexes of 1-alkyl-2-(arylazo)imidazole: single crystal X-ray structure of [Fe(MeaaiEt)2(NCS)2] (MeaaiEt=1-ethyl-2(p-tolylazo)imidazole) and [Ni(MeaaiMe)(NCS)2(H2O)2]·2DMF (MeaaiMe=1-methyl-2(p-tolylazo)imidazole). Inorganica Chim Acta 2005. [DOI: 10.1016/j.ica.2004.11.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Jeragh BJA, Elassar AZA, El-Dissouky A. Ligating behavior and metal uptake of N-sulphonylpolyamine chelating resins anchored on polystyrene-divinylbenzene beads. J Appl Polym Sci 2005. [DOI: 10.1002/app.21155] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Mathur T, Jasimuddin S, Milton H, Woollins J, Sinha C. First example of mixed azoheterocycles: structural studies of metallo-macrocycle Ag(I) versus tetrahedral Cd(II) complexes of pyridyl-azo-imidazole. Inorganica Chim Acta 2004. [DOI: 10.1016/j.ica.2004.04.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Chand B, Ray U, Mostafa G, Lu TH, Sinha C. 2D Extended supramolecular structures via π–π interactions of 1D coordination polymers of cadmium(II) complexes of arylazoimidazole using azido and thiocyanato bridging ligands. Polyhedron 2004. [DOI: 10.1016/j.poly.2004.02.029] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Anion-directed structural diversity in the complexes of Cd(II)-arylazoimidazole: synthesis, spectral characterization and crystal structure. Polyhedron 2003. [DOI: 10.1016/j.poly.2003.07.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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