Directed Supramolecular Assembly of Infinite 1-D M(II)-Containing Chains (M = Cu, Co, Ni) Using Structurally Bifunctional Ligands

The directed assembly of six different M(II) complexes (M = Cu, Co, and Ni) into infinite chains has been achieved
by combining anionic chelating ligands (for controlling the coordination geometry) with bifunctional ligands containing
a metal-coordinating pyridyl moiety and a self-complementary hydrogen-bonding moiety. Six crystal structures are
presented, and in each case, the chelating acac ligand occupies the four equatorial coordination sites leaving room
for the bifunctional ligand to coordinate in the axial positions. The supramolecular chemistry, which organizes the
coordination complexes into the desired infinite 1-D chains, is driven by a combination of N−H···N and N−H···O
hydrogen bonds.

将六种不同的M(II)配合物（M = Cu、Co、Ni）定向组装为无限长链的方法，通过将阴离子螯合配体（用于调控配位几何构型）与兼具金属配位吡啶基基团和自互补氢键基团的双功能配体相结合得以实现。本研究报道了六种晶体结构，在每一种结构中，螯合acac配体均占据四个赤道配位位点，为双功能配体在轴向位置配位预留了空间。将配位复合物组装为目标无限一维链的超分子相互作用，由N−H···N与N−H···O氢键共同驱动。