Syntheses and crystal structures of linear coordinated complexes of Ag+ with the ligands C(PPh3)2 and (HC{PPh3}2)+
作者:Wolfgang Petz、Florian Öxler、Bernhard Neumüller
DOI:10.1016/j.jorganchem.2009.08.020
日期:2009.12
The cationic complexes [(Ph3P}2C)Ag(CPPh3}2)]X (2+, X = Cl, BF4) with a linear arrangement of the ligands were obtained from the reaction of C(PPh3)2 (1) with the appropriate AgX in THF. The 31P NMR spectrum of the cation 2+ exhibits a doublet with J(Ag,P) = 15.3 Hz. The cation was also formed when the adduct O2C ← 1 was allowed to react with AgX in CH2Cl2 in the first step as shown by 31P NMR; however
阳离子配合物[(Ph 3 P} 2 C)Ag(C PPh 3 } 2)] X(2 +,X = Cl,BF 4)具有线性配体,是由C( PPh 3)2(1)与适当的AgX在THF中的溶液。阳离子2 +的31 P NMR光谱显示双峰,J(Ag,P)= 15.3 Hz。如图所示,当第一步使加合物O 2 C← 1与AgX在CH 2 Cl 2中反应时,也会形成阳离子。31 P NMR; 然而,溶剂的去质子化最终定量地产生了阳离子(HC PPh 3 } 2)+,(H 1)+。在不存在配位阴离子的情况下,含有阳离子(H 1)+作为配体的三阳离子络合物[(Ph 3 P} 2 CH)Ag(CH PPh 3 } 2)](BF 4)3(3),可以通过使AgBF 4与盐(H 1)(BF 4)反应来分离。所有化合物的特征在于IR和31核磁共振波谱;化合物〔的结构2 ]氯·1.25THF,3 ·5CH 2氯2,3