P-NMR STUDY ON THE AG(TRIPHOS)X SERIES (TRIPHOS = 1,1,1-TRIS(DIPHENYLPHOSPHINOMETHYL)ETHANE, X = ANION) - CRYSTAL AND MOLECULAR-STRUCTURE OF AG(TRIPHOS)I

被引:15
作者
CAMALLI, M [1 ]
CARUSO, F [1 ]
机构
[1] CNR,IST STRUTTURIST CHIM G GIACOMELLO,CP 10,I-00016 MONTEROTONDO,ITALY
关键词
D O I
10.1016/S0020-1693(00)80516-2
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The series of complexes Ag(triphos)X, triphos = 1,1,1-tris(diphenylphosphinomethyl)ethane, X = I, Cl, CH3COO, NO3, ClO4, has been synthesized. P NMR data, in solution, show that anions with lower basicity are associated with higher chemical shifts and higher coupling constants. Only two complexes, X = NO3 and ClO4, have available 1J(107Ag31P), the other complexes are still dynamic at 193 K. The two coupling constants appear higher than expected for complexes of the type 'AgP3'. The crystalline species Ag(triphos)I is orthorhombic, space group Pna21, a = 20.534(6), b = 10.363(3), c = 17.724(4) Å, and isomorphous with other tetrahedral complexes of triphos (Ni(triphos)I, Ni(triphos)SO2). An analysis of complexes of triphos so far reported shows that Ag(triphos)I has the longest (MP) bond distance and the smallest (PMP) bond angle. © 1990.
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页码:189 / 194
页数:6
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