Concerning the reaction of the betain-like compound O2CC(PPh3)2 with tungsten-carbonyl derivatives;: Preparation and crystal structures of [(CO)5W {η1-O2C2(PPh3)2}] and [(CO)4W{η2O2C2(PPh3)2}]

被引:8
作者
Petz, W [1 ]
Öxler, F [1 ]
Brand, A [1 ]
Neumüller, B [1 ]
机构
[1] Univ Marburg, Fachbereich Chem, D-35032 Marburg, Germany
来源
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2006年 / 632卷 / 04期
关键词
betain-like compounds; carbodiphosphorane adducts; chelating ligand; crystal structures; tungsten carbonyl compounds;
D O I
10.1002/zaac.200500461
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The carbodiphosphorane CO2 adduct O2CC(PPh3)(2) (1a) reacts with [(CO)(5)W(THF)] and [(CO)(3)W(NCEt)(3)] to produce the complexes [(CO)(5)W{eta(1)-O2CC(PPh3)(2)}] (2) and [(CO)(4)W{eta(2)-O2CC(PPh3)(2)}] (3), respectively. Whereas in 2 the betain-like ligand is coordinated at the tungsten atom in a monodentate manner, in 3 it acts as a chelating ligand with formation of a WO2C four-membered ring. As a by-product during the reaction with the acetonitrile adduct also some crystals of the hydrolysis product [HC(PPh3)(2)](2)[W6O19].3C(2)H(4)Cl(2) (4.3C(2)H(4)Cl(2)) were isolated. All compounds could be characterized by X-ray analyses and the usual spectroscopic methods.
引用
收藏
页码:588 / 592
页数:5
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