NHC adducts of tantalum amidohalides: the first example of NHC abnormally coordinated to an early transition metal??

Dalton Transactions Pub Date: 2017-03-08 DOI: 10.1039/C7DT00748E

Abstract

The reaction of Ta(NMe2)5 with NHC·HBF4 (NHC = IMes and SIMes) leads to new carbene adducts of the mixed TaV amidofluoride, [(NHC)TaF3(NMe2)2]. On the contrary, the reaction of Ta(NMe2)5 with IMes·HCl gives a complex mixture, where [(aIMes)TaCl2(NMe2)3] is identified as one of the products. This is the first example of abnormal NHC coordination to an early transition metal.

Graphical abstract: NHC adducts of tantalum amidohalides: the first example of NHC abnormally coordinated to an early transition metal
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