Perfluormethyl-element-liganden : XXXI. Ligandeneigenschaften von Me2PP(CF3)2 und Me2AsP(CF3)2 |
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| Authors: | J Grobe M Khne-Wchter D Le Van |
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| Institution: | Anorganisch-Chemisches Institut der Universität Münster, Corrensstrasse 36, D-4400 Münster B.R.D. |
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| Abstract: | The coordinating properties of the trifluoromethyl elemental compounds Me2PP(CF3)2 and Me2AsP(CF3)2 have been studied by the synthesis and spectroscopic investigations (IR, NMR, MS) of their complexes cis-M(CO)4L2 (A), (CO)4ML]2 (B) and (CO)5M]2L (C) (M = Cr, Mo, W). Complexes of type A with L = Me2PP(CF3)2 are obtained in good yield by reaction with M(CO)4NBD (NBD = norbornadiene), whereas with L = Me2AsP(CF3)2 the homobinuclear compounds B are formed. The attempt to prepare the cis-M(CO)4Me2AsP(CF3)2]2 complexes by treating M(CO)4(Me2AsH)2 with P2(CF3)4 is successful only for M = W. Binuclear compounds of type B or C, in general, can be prepared by stepwise reaction of the ligands with either M(CO)4NBD or M(CO)5THF. |
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