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Stereochemically non-rigid transition metal complexes of2,6-bis[1-(phenylimino)ethyl]pyridine (BIP). Part 3. Dynamic NMRstudies of fac-[PtXMe3(BIP)] (X C1, Br, or I). Crystal structure offac-[PtIMe3(BIP)]

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Orrell, KG, Osborne, AG, Sik, V, Webba da Silva, Mateus, Hursthouse, MB, Hibbs, DE, Abdul Malik, KM and Vassilev, NG (1998) Stereochemically non-rigid transition metal complexes of2,6-bis[1-(phenylimino)ethyl]pyridine (BIP). Part 3. Dynamic NMRstudies of fac-[PtXMe3(BIP)] (X C1, Br, or I). Crystal structure offac-[PtIMe3(BIP)]. Journal of Organometallic Chemistry, 555 . pp. 35-47. [Journal article]

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Abstract

The complexes fac-[PtXMe3(BIP)] (X Cl,Br or I;BIP 2,6-bis[1-(phenylimino)ethyl]pyridine) have been synthesised andcharacterised as involving BIP as a bidentate chelate ligand. In solution the metal-bound ligand exists in four conformationalforms, namely distal and proximal E,E and E,Z-isomers. 2D-EXSY NMR has been used to measure 1,4-metallotropic shifts ofthe PtXMe3 moiety between equivalent distal E,E forms, E,Z isomerisation of the pendant imine function and restricted C Crotation of the pendant arm of the BIP ligand. Activation energies, DG" (298.15 K), for all these processes are in the range 67–96kJ mol 1 and are essentially halogen independent. A crystal structure of fac-[PtIMe3(BIP)] shows that the pendant imine functionis in the E-conformation and is rotated at an angle of 80.1° to the plane of the pyridine.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Pharmacy and Pharmaceutical Science
Research Institutes and Groups:Biomedical Sciences Research Institute
Biomedical Sciences Research Institute > Molecular Medicine
Biomedical Sciences Research Institute > Molecular Medicine > Transcriptional Regulation & Epigenetics
ID Code:18303
Deposited By:Dr Mateus Webba da Silva
Deposited On:03 May 2011 10:26
Last Modified:04 Dec 2012 14:32

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