(I)-diphosphine derivatives with a bridging pyrazolate ligand are obtained in all cases, except when [Au2Cl2(μ-biphep)] is used as starting material. Surprisingly, in this case, two monodentate neutral pyrazole ligands are attached to the gold atoms. The new complexes are luminescent in the solid state at 77 K and in solution both at room temperature and 77 K. Low energy emission bands related to the presence
合成了一系列含有
二苯基膦桥联
配体dppm,dppe,dpephos,dbfphos和biphep的
金(I)配合物以及
吡唑类型的共
配体。的X射线晶体结构[
金2(μ-dpephos)(μ-
PZ 2CH3)] [PF 6 ],[
金2(μ-dbfphos)(μ-
PZ 2CH3)] [PF 6 ]和的起始化合物[Au 2 Cl 2(μ-biphep)]表明新络合物的结构和
化学计量特性取决于二
膦配体。这三种络合物显示出Au⋯Au接触在3.27Å和3.30Å之间,而二苯丙啶化合物的Au⋯Au接触最短。在所有情况下均获得具有桥连的
吡唑酸酯
配体的Digold(I)-
二膦衍
生物,不同之处在于,将[Au 2 Cl 2(μ-biphep)]用作原料。令人惊讶地,在这种情况下,两个单齿中性
吡唑配体连接到
金原子上。新的配合物在固态时在77 K下发光,并且在室温和77 K下在溶液中发光。在某些固态和/或化合物中已发现与