Synthesis and structure of a series of new haloaryl imido complexes of molybdenum
摘要:
The synthesis of a series of mono- and bis-haloarylimido molybdenum(VI) complexes is described. Two methods of introducing the electron poor imido functionality are employed, first the condensation of substituted anilines with Na2MoO4 in the presence of Me3SiCl/NEt3, secondly the sulfinyl amine metathesis with [Mo(O)(2)Cl-2(dme)] (1). The latter method works even in cases, when the first one does not work. Crystal structures of three complexes [Mo(NC6F5)(O)Cl-2(dme)] (2a), [Mo(N-2,6-Cl2C6H3)(2)Cl-2(dme)] (3b) and[Mo(N-2,4,6-Br3C6H2)(2)Cl-2(dme)] (4) are reported. The unusually small Mo-N-C(Ar) angle of 149.1(5)degrees has been found in the structure of 4. (C) 2001 Elsevier Science B.V. All rights reserved.