X-Ray crystal structure of [Ag<sub>4</sub>(μ-dppm)<sub>2</sub>(μ-C<sub>2</sub>F<sub>5</sub>COO)<sub>4</sub>]. Synthesis and spectroscopy of silver(<scp>i</scp>) perfluorinated carboxylate complexes with bis(diphenylphosphino)methane
作者:Edward Szłyk、Iwona Szymańska、Andrzej Surdykowski、Tadeusz Głowiak、Andrzej Wojtczak、Artur Goliński
DOI:10.1039/b304004f
日期:——
demonstrate splitting due to 1J(107,109Ag–31P) and 2J(P–P) coupling between crystallographically inequivalent phosphorus atoms. Variable-temperature 31P NMR spectra were recorded between 323 and 223 K and 1J(107Ag–31P), 3J(107Ag–31P), 1J(109Ag–31P), 3J(109Ag–31P) spin–spin coupling constants calculated. Analysis of coordination shifts and coupling constants is in favor, in solution, of binuclear trigonal Ag(I)
Ag(I)羧酸盐与dppm =的配合物双(二苯基膦基)甲烷通式[Ag 2(RCOO)2(dppm)]的式中,R = CF 3,C 2 F 5,C 3 F 7,C 4 F 9,C 6 F 13,C 9 F 19并进行了表征用1 H,13 C,19楼31 P NMR 和 红外。的X射线晶体结构将[Ag 4(μ-DPPM)2(μ-C 2 ˚F 5 COO)4 ],在100(1)K(测定- [R = 0.0316)显示一个中心对称的四核聚集体与原子桥连的由银2条DPPM和四个pentafluoropropionates形成两个单原子μ 2 - (η 1 -O)和两个三μ 3 - (η 2 -O,η 1 -O')桥。在两个晶体学独立的Ag(I)原子中,一个具有扭曲的四面体几何结构,其中一个具有Ag-P键和三个Ag-O键,而第二个具有三角形平面几何结构,具有Ag-P键和两个Ag-O键。在31聚氯乙烯 MAS