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新型硫/氧钼配合物(Et4N)2MoO(S4)(bdtX2)和(Et4N)2Mo2O22-S)2(bdtX2)的合成及晶体结构

Synthesis and Crystal Structures of New Sulfido/oxo-molybdenum Complexes (Et4N)2MoO(S4)(bdtX2)and (Et4N)2Mo2O22-S)2(bdtX2) (X=H and Cl)

  • 摘要: 在乙腈中,用摩尔比为1∶1的1,2-苯二硫醇(H2bdt)或3,6-二氯-1,2-苯二硫醇(H2bdtCl2)与(Et4N)2MoIVO (S42进行取代反应,得到单硫烯钼(IV)氧化合物(Et4N)2MoO (S4)(bdtX2)(X=H,1;X=Cl,2)。在热的乙腈中,用摩尔比为1∶1的1,2-芳二硫醇继续与化合物12反应,得到双硫桥联的双核钼(V)化合物(Et4N)2Mo2O2(μ2-S)2(bdtX22(X=H,3;X=Cl,4)。通过UV-3000紫外分光光度计对这四种配合物进行谱学表征,并采用X射线单晶衍射仪对其中配合物2,34的结构进一步测定,结果表明:在化合物34结构中,端氧的位置处于Mo2S2平面的同侧,为顺式构型。

     

    Abstract: Substitution of (Et4N)2MoIVO(S4)2 in acetonitrile with mole ratio(1:1) 1,2-benzenedithiol (H2bdt) and 3,6-dichloro-1,2-benzenedithiol (H2bdtCl2) gave mono(dithiolene)oxo-molybdenum(IV) complexes (Et4N)2MoO(S4)(bdtX2) (X=H, 1; X=Cl, 2). Treatment of 1 and 2 with additional equimolar amount of 1,2-arenedithiol in warm acetonitrile afforded bis(µ-sulfido)dimolybdenum(V) species (Et4N)2Mo2O22-S)2(bdtX2)2 (X=H, 3;X=Cl, 4). All four complexes were characterized spectroscopically with UV- 3000 spectrophotometer, of which complexes 2, 3 and 4 have been further determined with single-crystal X-ray diffraction. Results show the synisomers are formed referring to the position of the apical oxo ligands with respect to the Mo2S2 plane.

     

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