MXâ¯HN+ hydrogen bond synthons have been exploited in preparation of crystalline salts [4,4â²-H2bipy][MX4] [X = Cl, M = Pd, Pt, Co, Zn, Hg, Mn, Cd and Pb; X = Br, M = Pd, Co, Zn and Mn]. In these salts three structural forms for the halometallate species are observed: mononuclear square planar (M = Pd, Pt) or tetrahedral (M = Co, Zn, Hg) and polymeric cis edge-sharing octahedral (M = Mn, Cd, Pb). These correspond to three structural motifs which form the basis of the crystal structures formed in their [4,4â²-H2bipy]2+ salts: ribbon polymer (M = Pt, Pd); herring-bone packing of cyclic dimers (M = Co, Zn, Hg); layer cross-linked polymers [MX4}n]2n- (M = Mn, Cd, Pb). The factors controlling the structures adopted, the hierarchy of intermolecular interactions present in these crystals and the principles that may be inferred and exploited further are considered.
MXâ¯HN+氢键合成子已被用于制备晶体盐[4,4â²-H2bipy][MX4] [X = Cl, M = Pd, Pt, Co, Zn, Hg, Mn, Cd和Pb;X = Br, M = Pd, Co, Zn和Mn]。在这些盐中,观察到卤
金属物种的三种结构形式:单核的平面正方形(M = Pd, Pt)或四面体(M = Co, Zn, Hg)以及聚合的顺式边共用八面体(M = Mn, Cd, Pb)。这些结构对应于形成其[4,4â²-H2bipy]2+盐的晶体结构的三种结构图案:带状聚合物(M = Pt, Pd);循环二聚体的鱼骨状堆积(M = Co, Zn, Hg);层叠交联聚合物[MX4}n]2n-(M = Mn, Cd, Pb)。文中还考虑了控制所采用结构的因素、这些晶体中存在的分子间相互作用的层次以及可以推断和进一步利用的原理。