Five-co-ordinate ethylene complexes of platinum(<scp>II</scp>). Part 2. Synthesis and reactivity of some five-co-ordinate complexes of platinum with bis(hydrazones) and X-ray crystal structure of [butane-2,3-dione bis(methylhydrazone)]dichloro(η-ethylene)platinum(<scp>II</scp>)
reaction of bis(hydrazones) with Zeise's salt, K[Pt(C2H4)Cl3], to give stable five-co-ordinate complexes of general formula [Pt(C2H1)Cl2(L)] is reported [L = Ph(H)N·N:[graphic omitted]:N·N(H)Ph (L1), Ph(H)N·N:C(Me)·C(Me):N·N(H)Ph (L2), Ph(Me)N·N:C(Me)·C(Me):N·N(Me)Ph (L3), Me(H)N·N:C(Me)·C(Me):N·N(H)Me (L4), or Me2N·N:C(Me)·C(Me):N·NMe2(L5)]. These have a trigonal bipyramidal structure with the chlorine
双hydr与Zeise盐K [Pt(C 2 H 4)Cl 3 ]反应,得到稳定的通式[Pt(C 2 H 1)Cl 2(L)]的五坐标配合物据报道[L = Ph(H)N·N:[省略图]:N·N(H)Ph(L 1),Ph(H)N·N:C(Me)·C(Me):N· N(H)Ph(L 2),Ph(Me)N·N:C(Me)·C(Me):N·N(Me)Ph(L 3),Me(H)N·N:C( Me)·C(Me):N·N(H)Me(L 4)或Me 2 N·N:C(Me)·C(Me):N·NMe 2(L 5)]。它们具有三角形的双锥体结构,其顶部具有氯原子,并且双齿配体(通过其α-二亚胺单元进行配位)和乙烯位于赤道平面内。五坐标物质在溶液中分解,释放出乙烯,得到式[PtCl 2(L)]的四坐标配合物。测量了1,2-二氯乙烷中的分解速率,并讨论了其与1 H nmr数据的关系。
A series of new oxomolybdenum(IV) complexes involving some NSO donors as the main ligand frame; the first use of diacetyldihydrazones to stabilize the MoO+2 acceptor centre
作者:Arindam Rana、Rupam Dinda、Saktiprosad Ghosh、Alexander J. Blake
DOI:10.1016/j.poly.2003.06.001
日期:2003.10
in solution and by cyclic voltammetry. One of the complexes, [MoO(LH)(o-phen)] is structurally characterized by X-ray crystallography. The structure reveals that the molybdenum acceptor centre is present in a distorted octahedral N3O2S donor environment. The N–N coligand was found to occupy a plane perpendicular to that taken up by the ONS ligand. It is to be noted that structurally characterized oxomolybdenum(IV)