A series of ML2 coordination compounds of manisyl-substituted 2-pyridin-2-yl-1,10-phenanthrolines (pherpys) and 2,2â²:6â²,2â²â²-terpyridines (terpys) with Fe(II), Co(II), Ni(II), Cu(II), Zn(II), Ru(II), and Os(II), were synthesized. The pyridyl-phenanthrolineâmetal complexes form isomorphous crystals (space group Pcca), except for the zinc complex, which is isostructural but not isomorphous (space group P21/c). Traces of the Ru complex induce the Zn complex to crystallize in the Pcca modification. Terpyridine complexes are isostructural but divided into two subgroups (Pnna and C2/c). Within the crystal lattice, the dications arrange into two-dimensional sheets of interdigitated left- and right-handed double helices via CHâ¯Ï and ÏâÏ interactions of the pendant manisyl functionalities. All of the complexes exhibit weak ligand charge transfer (LCT) emission in solution at room temperature and the osmium complexes possess an emissive metal to ligand charge transfer (MLCT) state.
一系列M
L2配位化合物,包括2-
吡啶-2-基-1,10-
菲咯啉(pherpys)和2,2²:6²,2²²-三联
吡啶(terpys)与Fe(II)、Co(II)、Ni(II)、Cu(II)、Zn(II)、Ru(II)和Os(II)的化合物被合成。
吡啶-
菲咯啉-
金属配合物形成同晶晶体(空间群Pcca),但
锌配合物除外,它具有同构性,但不具有同晶性(空间群P21/c)。Ru配合物的痕迹诱导Zn配合物以Pcca形式结晶。三联
吡啶配合物具有同构性,但分为两个亚组(Pnna和C2/c)。在晶格中,二价阳离子通过垂悬的甘
氨酰官能团的CH═和═相互作用排列成二维片状左旋和右旋双螺旋。所有配合物在室温下溶液中均表现出弱
配体电荷转移(LCT)发射,
锇配合物具有发射性
金属到
配体电荷转移(MLCT)状态。