Group 10 Metal Dithiolene Bis(isonitrile) Complexes: Synthesis, Structures, Properties, and Reactivity
作者:Antony Obanda、Kendra Valerius、Joel T. Mague、Stephen Sproules、James P. Donahue
DOI:10.1021/acs.organomet.0c00375
日期:2020.8.10
yields [(Ph2C2S–S•)Pt(C≡NtBu)2]+, identified spectroscopically, but in the crystalline state [[(Ph2C2S–S•)Pt(C≡NtBu)2]2]2+ prevails, which forms via axial Pt···S interactions and pyramidalization at the metal. Complete substitution of MeNC from [(Ph2C2S2)Ni(C≡NMe)2] by 2,6-Me2py under forcing conditions yields [(2,6-Me2py)Ni(μ2-η1,η1-S′,η1-S″-S2C2Ph2)]2 (8), which features a folded Ni2S2 core. In most cases
[(Ph 2 C 2 S 2)2 M](M = Ni 2 +,Pd 2 +,Pt 2+)与2当量的RN≡C(R = Me(a),Bn(b), Cy(c),t Bu(d),1-Ad(e),Ph(f))产生[(Ph 2 C 2 S 2)M(C≡NR)2 ](M = Ni 2 +,4a – f; M = Pd 2 +,5a – f; M = Pt 2+,6a – f),它们是空气稳定的,并且可以进行色谱纯化。所有成员均经过晶体学表征。在结构上,随着M从Ni到Pt的变化,趋于逐渐显示出更大的平面性,并且从Ni向Pt移动时,配位C≡NR的C≡N键长适度下降。振动光谱(CH 2氯2溶液)揭示了ν C≡N为[(PH频率2 c ^ 2 s ^ 2)M(C≡NR)2基本上高于游离C = NR的那些],并且随着M从Ni到Pt的增加而增加。这种趋势被解释为是由于M处正电荷的增加,该电荷稳定了配体的线性,电荷分离