Synthesis, Characterization and Crystal Structures of 2,2’-Bipyride Complexes of Chromium(III)
Article Sidebar
Main Article Content
Abstract
Reaction of CrCl3 · 6 H2O with 2,2’ bipyridine (bipy) in ethanol in the mole ratio of 1:1 and 1:2 at ambient temperature and pressure results in the formation of the cationic complexes [Cr(bipy)(H2O)2Cl2]Cl · H2O (1 · H2O) and [Cr(bipy)2Cl2]Cl · 2 H2O (2 · 2 H2O), respectively. The crystal structures were determined by X-ray diffraction. 1 crystallized in the orthorhombic space group Pccn with a = 6.8781 (6) Å, b = 11.9147 (11) Å, c = 20.2969 (18) Å, and α = β = γ = 90° with Z = 4. 2 crystallized in the triclinic space group P-1with a = 7.0360 (5) Å, b = 12.3914 (10) Å, c = 13.0311 (10) Å, and α = 90.70000 (10)°, β = 93.5140 (10)°, γ = 100.0230 (10)° with Z = 2. The complexes are six-coordinated and have normal planarity. Both complexes were characterized by spectrophotometry and the chromium center appears as an oxidation state of +3 approved by effective magnetic moment.
Keywords: chromium, 2,2’-bipyridine
Corresponding author: E-mail: [email protected]
Article Details
Copyright Transfer Statement
The copyright of this article is transferred to Current Applied Science and Technology journal with effect if and when the article is accepted for publication. The copyright transfer covers the exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, electronic form (offline, online) or any other reproductions of similar nature.
The author warrants that this contribution is original and that he/she has full power to make this grant. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors.
Here is the link for download: Copyright transfer form.pdf
References
[2] Cotton, F. A., and Wilkinson, G. 1988 Advanced Inorganic Chemistry. 5 th Edition. New York, Wiley.
[3] Hogan, J. P. 1970 Ethylene Polymerization Catalysis over Chromium Oxide, Journal of Polymer Science: Part A-1, 8, 2637-2652.
[4] Karol, F. J., Karapinka, G. L., Wu, C., Dow, A. W., Johnson, R. N., and Carrick, W. L. 1972 Chromocene Catalysts for Ethylene Polymerization, Scope of the Polymerization, Journal of Polymer Science: Part A-1, 10, 2621-2637.
[5] Theopold, K. H. 1997 Understanding of Chromium-based Olefin Polymrization Catalysts, Chemtech, 27, 26-32.
[6] Köhn, R. D., haufe, M., Mihan, S., and Lilge, D. 2000 Triazacyclohexane Complexes of Chromium as Highly Active Homogeneous Model Systems for the Phillips Catalysts, Chemical Communications, 1927-1928.
[7] Gibson, V. C., Maddox, P. J., Newton, C., Redshaw, C., Solan, G. A., White, A. J. P., and Williams, D. J., 1998 Chromium(III) Complexes Bearing N,N-Chelate Ligands as Ethene Polymerization Catalysts, Chemical Communications, 1651-1652.
[8] Gibson, V. C., Newton, C., Redshaw, C, Solan, G. A., White, A., J., P., and Williams, D. J. 2002 Chromium Complexes bearing pyrroide-imine N,N-Chelate Ligand: Synthesis, Structures and Ethylene Plymerisation Behaviour, Journal of Chemical Society, Dalton Transaction, 4017-4023.
[9] Robertson, N. J., Carney, M. J., and Halfen, J. A. 2003 Chromium(II) and Chromium(III) Complexes Supported by Tris(2-pyridylmethyl) amine: Synthesis, Structures, and Reactivity, Inorganic Chemistry, 42, 6876-6885.
[10] Berka, L. H., Gagne, R. R., Philippon, G. E., Wheeler, C. E. 1970 Transition Metal Complexes of 1, 10-Phenanthroline and 2,2’- Bipyridine, Inorganic Chemistry, 9(12), 2705-2709.
[11] Bayazitova, E. A., Zelentsov, V. V., Spitsyn, V., I. 1967 Magnetic Properties of Some Cr(III) Complexes with Mixed Ligand. Zhurnal Strukturnoi Khimii, 8(3), 496-500.
[12] Nakamoto, K. 1997 Infrared and Raman Spectra of Inorganic and Coordination Compounds, Part B: Applications in Coordination, Organometallic and Bioinorganic Chemistry. 5 th Edition. New York, John Wiley & Sons, Inc.
[13] Andersen, Peter, Josephsen, Jens. 1971 Configurational Correlations of Cis-bis(2,2’-bipyridine) and of Cis-bis(1,10-phenanthroline) Complexes of Trivalent Metals by Means of X-ray Powder Photographs. Acta Chemica Scandinavica, 25(9), 3255-3260.