1-ALKOXY-2-AZAALLENYL-KOMPLEXE VON CHROM UND WOLFRAM

Article abstract of DOI:10.1016/0022-328X(85)80071-1

The successive reaction of (CO)6M with Na12> and BF4 yields (CO)5M12)OEt> (II: M = Cr; III: M = W; CR¹2 = C(C6H4Br-p)2 (a),CPh2 (b), C(C6H4OMe-p)2 (c), C(C6H4)2O (d), CBu^t2 (e)).Hexacarbonyltungsten, (CO)6W, reacts with Na and MeOSO2F to give (CO)5W (IV).X-Ray analysis of IIe shows that: (1) the C=N=C fragmentis almost linear (171.7 deg); (2) the two N=C bond lengths are equal within experimental error; and (3) the O,C,CrN plane is perpendicular to the C(Me3),C,N,(Me3) plane (90.0 deg).Therefore compounds II-IV are best described as 1-alkoxy-2-azaallenyl complexes.