154860-69-2Relevant academic research and scientific papers
Ylide transfer reactions used for the synthesis of di- and trinuclear gold complexes. X-ray structure of [Au3(μ2-CH2PPh2CH 2)2(PPh3)2]TCNQ (TCNQ = 7,7′,8,8′-tetracyanoquinodimethane)
Cerrada, Elena,Gimeno, M. Concepción,Jiménez, Josefina,Laguna, Antonio,Laguna, Mariano,Jones, Peter G.
, p. 1470 - 1475 (2008/10/08)
Reactions of the dinuclear derivative [Au2(μ-CH2PPh2CH2)2] with [AuL2]ClO4 (L = PPh3, PPh2Me, tht) or Q[AuX2] (X = Cl, Q = N(PPh3)2; X = Br, Q = PPh3Bz), in a 1:2 molar ratio, proceed with partial transfer of the bis(ylide) ligand to afford the cationic or anionic derivatives [Au2(μ-CH2PPh2CH2)L 2]ClO4 (L = PPh3, PPh2Me, tht) or Q[Au2(μ-CH2PPh2CH2)X2] (X = Cl, Q = N(PPh3)2; X = Br, Q = PPh3Bz), respectively. When [Au(PPh3)2]ClO4 is used and the reaction is performed in a 1:1 molar ratio, the trinuclear derivative [Au3(μ2-CH2PPh2CH 2)2(PPh3)2]ClO4 is obtained. Complexes [Au2(μ-CH2PPh2CH2)L 2]ClO4 (L = PPh3, tht) can be also obtained by reaction of Q[Au2(μ-CH2PPh2CH2)X2] (X = Cl, Br) with [Ag(OClO3)L] (L = PPh3, tht), and the anionic derivative [N(PPh3)2][Au2(μ-CH2PPh 2CH2)Cl2] undergoes oxidative addition of chlorine to give the gold(II) compound [N(PPh3)2][Au2(μ-CH2PPh 2CH2)Cl4]. The structure of [Au3(μ2-CH2PPh2CH 2)2(PPh3)2]TCNQ has been determined by a single-crystal X-ray diffraction study. It crystallizes in the space group P1 with a = 12.221(3) A?, b = 13.220(3) A?, c = 22.690(5) A?, α = 98.12(2)°, β = 91.39(2)°, γ = 115.76(2)°, Z = 2 (at -95°C). Intramolecular Au?Au contacts of 3.391 and 3.544 A? are observed.
