Please use this identifier to cite or link to this item:
|Title:||Stereoelectronic effects on the chelating properties of [2-(methylsulfinyl)ethyl]diphenylarsine and its phosphorus analogue.||Authors:||Chooi, S.Y.M.
|Issue Date:||Sep-1994||Citation:||Chooi, S.Y.M.,Ranford, J.D.,Leung, P.-H.,Mok, K.F. (1994-09). Stereoelectronic effects on the chelating properties of [2-(methylsulfinyl)ethyl]diphenylarsine and its phosphorus analogue.. Tetrahedron: Asymmetry 5 (9) : 1805-1814. ScholarBank@NUS Repository.||Abstract:||A pair of internally diastereomeric platinum(II) complex cations containing the orthometalated (S)-(1-(dimethylamino)ethyl)naphthalene and the racemic form of the sulfinyl-substituted ligand Ph2ECH2CH2S(O)Me ((E-S(O), where E = As, P) has been prepared via two routes originating from (S)-(+)-bis(m-chloro)bis[1-[1-(dimethylamino)ethyl]-2-naphthalenyl-C,N]diplatinum(II). The crystal structure of the arsenic analogue (crystal data: triclinic. P1, a = 7.950(2) Å,b = 17.449(3) Å,c= 21.981(4) Å,α = 82.67(2)° β = 87.06(2)°,γ= 82.87(2)°, Z = 4 and R = 0.0409) shows the ligand being coordinated to platinum(II) in both diastereomers as a bidentate chelate exclusively via arsenic and sulfur donor atoms. Proton NMR studies also indicate the retention of this AsS coordination in solution. A similar bonding mode was observed for the analogous phosphine complex. The ES chelation appears to be governed by the electronic properties of platinum. In contrast to the previously documented palladium(II) analogues, the EO chelation is not observed in the present series of platinum(II) compounds although there will be less severe ligand-ligand interactions if the ES(O) ligands form six-membered chelate rings in these square-planar systems. © 1994.||Source Title:||Tetrahedron: Asymmetry||URI:||http://scholarbank.nus.edu.sg/handle/10635/94879||ISSN:||09574166|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jun 28, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.