The reaction of M(CO)4(NBD) (NBD = norbornadiene; M = Cr, Mo, W) with the ligands Me2XGeMe2(CH2)2X′Me2 yields the chelate complexes (CO)4M[Me2XGeMe2(CH2)2X′Me2] for X, X′ = P, As, but not for X and/or X′ = N. The attempt, to synthesize the compound (CO)4W[Me2AsGeMe2(CH2)2NMe2] by replacement of two cis-coordinated piperidine ligands from cis-W(CO)4(pip)2, leads to the formation of the cis-disubstituted
M(CO)4(NBD)(NBD =降
冰片二烯; M = Cr,Mo,W)与
配体Me 2 XGeMe 2(CH 2)2 X'Me 2的反应生成螯合物(CO)4 M [ Me 2 XGeMe 2(CH 2)2 X'Me 2 ]对于X,X'= P,As,但对于X和/或X'= N不适用。尝试合成化合物(CO)4 W [Me 2 AsGeMe 2(CH 2)2 NMe 2 ]通过取代两个顺式配位的
哌啶配体顺式-W(CO)4(pip)2导致形成具有两个As供体原子的顺式-二取代产物W(CO)4 [Me 2 AsGeMe 2(CH 2)2 NMe 2 ] 2。Cr(CO)4(NBD)与Me 2 AsGeVi(Vi =
乙烯基)的反应生成顺式-Cr(CO)4(Me 2 AsGeMe 2 Vi)2,而不是可能的σ/π-螯合物Cr(CO)4(Me 2 AsGeMe 2Vi)。为了比较,由Cr(CO)5 THF制备了单取代衍
生物Cr(CO)5