Gold(I) complexation with trialkyl/triaryl phosphine selenide ligands

被引：17

作者：

Ahmad, S ^{[1
]}

Akhtar, MN ^{[1
]}

Isab, AA ^{[1
]}

Al-Arfaj, AR ^{[1
]}

Hussain, MS ^{[1
]}

机构：

[1] King Fahd Univ Petr & Minerals, Dept Chem, Dhahran 31261, Saudi Arabia

来源：

JOURNAL OF COORDINATION CHEMISTRY | 2000年 / 51卷 / 03期

关键词：

gold(I); phosphine; selenide; NMR; disproportionation;

D O I：

10.1080/00958970008055129

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A number of phosphine selenide ligands and their gold(I) complexes of general formula R3P=Se-Au-X (where X is Cl-, Br- and CN- and R=phenyl, cyclohexyl and tolyl) were prepared. The complexes were characterized by elemental analysis, IR and P-31 NMR spectroscopic methods. In the IR spectra of all complexes a decrease in frequency of P=Se bond upon coordination was observed, indicating a decrease in P=Se bond order. P-31 NMR showed that the electronegativity of the substituents is the most important factor determining the P-31 NMR chemical shift. It was observed that phosphorus resonance is more downfield in alkyl substituted phosphine selenides, as compared to the aryl substituted ones. Ligand disproportionation in the complex Cy3P=SeAuCN in solution to form [Au(CN)(2)](-) and [(Cy3P=Se)(2)Au](+) was investigated by C-13 and N-15 NMR spectroscopy.

引用

页码：225 / 234

页数：10

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[2]

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