Journal of the Chemical Society, Dalton Transactions p. 2207 - 2214 (1996)
Update date:2022-08-02
Topics:
Tan, Agnes L.
Low, Pauline M. N.
Zhou, Zhong-Yuan
Zheng, Weiming
Wu, Bo-Mu
Mak, Thomas C. W.
Hor, T. S. Andy
Treatment of [PtCl2(L-L)] [L-L = 2 PPh3, Ph2PCH2PPh2(dppm) or Fe(C5H4PPh2)2(dppf)] with Ag(O2CR) (R = Me, CF3, Pri or Ph) at room temperature generally gave [Pt(O2CR)2(L-L)] in moderate to good yields. The crystal and molecular structures of [Pt(O2CMe)2(dppf)]·H2O, [Pt(O2CPh)2(dppf)]·CH2Cl2 and [Pt(O2CCF3)2(dppm)] have been determined by single-crystal X-ray diffractometry. All these complexes show a mononuclear square-planar structure with a chelating diphosphine and two neighbouring (cis) carboxylates in a monodentate mode. These structures contrast those of the parent [Pt4(μ-O2CMe)8] and its derivative [Pt4(en)4(μ-O2CMe)4]4+ (en = ethylenediamine) which are tetrameric, based on octahedral PtII, and contain bridging acetates and direct Pt-Pt bonds. Fenske-Hall molecular orbital calculations of these structures confirmed the existence of Pt-Pt bonding interactions. The presence of hard and electronegative ligands like en and acetate incurs a deficiency in σ-electron density, compared to virtually filled non-bonding orbitals; the former is alleviated by Pt-Pt bonding, d8 Complexes with ligands like phosphines possessing both σ-donating and π-accepting qualities appear to favour the usual square-planar geometry.
Wuhan Better Organic Technology Inc.
Contact:13307163183
Address:Wuhan Economic&Technology Development Zone, Hubei
Contact:0086-29-88315623
Address:S711, Innovation Bldg No.25 Gaoxin 1st Rd, Xian P.R of China 710075
HANGZHOU FOREWIN PHARMA CO., LTD
Contact:+86-571-89053961
Address:hangzhou
Hangzhou Yingshanhua Pigment Chemicals Co.,Ltd.
Contact:+86-0150-58101658
Address:Nanyang Economic DevelopmentZong,Xiaoshan,Hangzhou,China
JIANGXI ZHANGFENG CHEMICAL CO., LTD.
Contact:+86-0799-3413066
Address:Xiyuan village, Xiabu Town, Xiangdong District
Doi:10.1021/jacs.6b02469
(2016)Doi:10.1039/c39840000066
(1984)Doi:10.1021/jm970699s
(1998)Doi:10.1016/0960-894X(96)00426-X
(1996)Doi:10.1016/0040-4039(96)00809-X
(1996)Doi:10.1002/anie.200351954
(2003)
