Syntheses and characterization of molybdenum complexes with the (1,3-dithioliumyl)diphenyl phosphine containing ligands

被引：1

作者：

Yih, KH ^{[1
]}

机构：

[1] Hung Kuang Inst Technol, Dept Appl Cosmetol, Taichung 433, Taiwan

来源：

JOURNAL OF THE CHINESE CHEMICAL SOCIETY | 1999年 / 46卷 / 04期

关键词：

molybdenum complex; protonation; intramolecular cyclization; (1,3-dithioliumyl)diphenylphosphine;

D O I：

10.1002/jccs.199900072

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Treatment of [Et4N][Mo(CO)(5)(PPh2CS2)], 1 with unsaturated organic halides afforded the neutral complexes Mo(CO)(5)(PPh2CS2R) (R = CH2CN, 2; R = CH2C=CH, 3). Alkylation reactions take place at the sulfur atom. Protonation of complex 2 and 3 with HBF4 produced the intramolecular cyclization products [Mo(CO)(5)(PPh2CS2C2H3N)][BF4], 4 and [Mo(CO)(5)(PPh2CS2C3H4)][BF4], 5, respectively. In complex 4 and 5, two five-membered 1,3-dithiolium rings formed. Protonation of 3 to 5 is not reversible, but deprotonation of 4 by n-BuLi or PPh3, gave 2 quantitatively. Treatment of 4 with n-Bu4NF yielded complex Mo(CO)(5)PPh2F, 6 and 2 with 1:1 ratio, but in the reaction of 5 and n-Bu4NF only compound 6 was formed. All of these complexes are identified by spectroscopic methods.

引用

页码：535 / 538

页数：4

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