Structural properties of platinum(II) biphenyl complexes containing 1,10-phenanthroline derivatives
Rillema, D. Paul Cruz, Arvin John Filoteo Tasset, Brandon J. Moore, Curtis E. Siam, Khamis Huang, Wei
Rillema, D. Paul
Cruz, Arvin John Filoteo
Tasset, Brandon J.
Moore, Curtis E.
Siam, Khamis
Huang, Wei
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2013-06-10
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Article
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Keywords
Platinum (II),Biphenyl dianion,Phenanthroline,X-ray,H-1 NMR,CD,Density-functional theory,Transition-metal-complexes,Circular-dichroism spectra,Photophysical properties,Basis-sets,Solid-state,Excitation-energies,Crystal-structure,Ligands,Potentials
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Citation
Rillema, D. Paul; Cruz, Arvin John Filoteo; Tasset, Brandon J.; Moore, Curtis E.; Siam, Khamis; Huang, Wei. 2013. Structural properties of platinum(II) biphenyl complexes containing 1,10-phenanthroline derivatives. Volume 1041, 10 June 2013, Pages 82–91
Abstract
Seven platinum(II) complexes formulated as Pt(bph)L, where bph is the 2,2'-biphenyl dianion and L = 4-methyl-1,10-phenanthroline (4-Mephen), 5-methyl-1,10-phenanthroline (5-Mephen), 5-chloro-1,10-phenanthroline (5-Clphen), 5,6-dimethyl-1,10-phenanthroline (5,6-Me(2)phen), 4,7-dimethyl-1,10-phenanthroline (4,7-Me(2)phen), 4,7-diphenyl-1,10-phenanthroline (4,7-Ph(2)phen) and 3,4,7,8-tetra-methyl-1,10-phenanthroline (3,4,7,8-Me(4)phen) are reported. Protons attached to the phen ligand resonate downfield from those attached to the bph ligand and two proton signals are split by interaction with Pt-195. Pt(bph)(3,4,7,8-Me(4)phen), Pt(bph)(4,7-Me(2)phen), Pt(bph)(5,6-Me(2)phen), Pt(bph)(4,7-Ph(2)phen) and Pt(bph)(5-Mephen) crystallize in the space groups Pna2(1), P2(1)/n, P2(1)/c, P - 1 and Pca2(1), respectively. The structures of the complexes deviate from true planarity and divide themselves into two groups where the bph and phen ligands cross in an X configuration or bow out in a butterfly (B) configuration. Circular dichroism revealed two different spectra with respect to the X and B configurations. (C) 2013 Elsevier B.V. All rights reserved.
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ELSEVIER SCIENCE BV
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Journal of Molecular Structure;v.1041
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0022-2860