creators_name: Canty, AJ
creators_name: Honeyman, RT
creators_name: Skelton, BW
creators_name: White, AH
creators_id: allan.canty@utas.edu.au
creators_id: 
creators_id: 
creators_id: 
type: article
datestamp: 2008-02-04 04:40:19
lastmod: 2008-07-18 10:30:13
metadata_visibility: show
title: Synthesis and isomerism of neutral and cationic
dimethylplatinum(IV) complexes. Crystal structure of the bis(pyrazol-1-yl)(thien-2-yl)methane complex
PtI2Me2{(pz)2(thi)CH-N,N’}
ispublished: pub
subjects: 259901
full_text_status: restricted
note: The definitive version is available at http://www.sciencedirect.com
abstract: The reaction of [PtMe2(SEt2)]2 with tripodal nitrogen donor ligands and iodine in dichloromethane gives diiododimethylplatinum(IV) complexes, PtI2Me2{(pz)2(L)
CH-N,N’}, in which the N,N’-bidentate ligands are trans to the cis-PtMe2 group and have one uncoordinated donor group. The bis(pyrazol-l-yl)(thien-2-yl)methane complex, PtI2Me2{(pz)2(thi)CH-N,N’}, has Pt-I bond lengths of 2.6199(7) and 2.6649(6) A for the trans-PtI2 group, and Pt-C bond lengths of 2.070(7) and 2.097(9) A, and Pt-N bond lengths of 2.181(5) and 2.192(6) A. Complexes of (pz)2(L)CH [L = N-methylimidazol-2-yl (mim), pyridin-2-yl (py)] exist as a mixture of isomers, with an isomer ratio as expected for a random distribution of coordinated
pz and L donor groups, 2:1 for 2pz:(pz + L) coordination. The complexes of (pz)3CH, (pz)2(mim)CH, and (pz)2(py)CH are converted into [PtIMe2{(pz)2(L)CH-N,N’,N”}]I on heating, and the cations of the unsymmetrical tridentate ligands (pz)2(L)CH (L = py, mim) also exist as isomers. The isomers have the donor group L trans to a methyl or iodo group, where the ratio (L trans to Me)(L tram to I) is
2:1 for L = py (as expected for a random distribution of isomers) and 1: 1 for L=mim.
date: 1990
date_type: published
publication: Journal of Organometallic Chemistry
volume: 396
number: 1
pagerange: 105-113
id_number: 10.1016/0022-328X(90)85197-7
refereed: TRUE
issn: 0022-328X
official_url: http://dx.doi.org/10.1016/0022-328X(90)85197-7
citation: Canty, AJ and Honeyman, RT and Skelton, BW and White, AH (1990) Synthesis and isomerism of neutral and cationic dimethylplatinum(IV) complexes. Crystal structure of the bis(pyrazol-1-yl)(thien-2-yl)methane complex PtI2Me2{(pz)2(thi)CH-N,N’}. Journal of Organometallic Chemistry, 396 (1). pp. 105-113. ISSN 0022-328X
document_url: http://eprints.utas.edu.au/2953/1/JOMC1990_2C_105.pdf