Two bis-pyridyl-bis-amine ligands, trans-1,2-bis(m-picolyamino)cyclohexane (rac-m-picchxn) and trans-1,2-bis(p-picolyamino)cyclohexane (rac-p-picchxn), derived from trans-1,2-diaminocyclohexane (rac-chxn), were assembled with CuCl₂, ZnCl₂, ZnBr₂, Co(NO₃)₂, and CdCl₂ through reactants slow diffusion to afford corresponding metal complexes. Complexes [Cu(R,R-m-picchxn)Cl₂] (1) and [Zn(rac-m-picchxn)Br₂] (3) are mononuclear coordination structures, complex [Zn₂(rac-m-picchxn)Cl₄]_n (2) adopts a one-dimensional (1D) helical chain, complex {[Co(R,R-p-picchxn)(NO₃)₂]·THF·2/3H₂O}_n (4) has a two-dimensional (2D) kgm layer structure, complex [Cd(rac-p-picchxn)Cl₂]_n (5) suits a 1D double-stranded zigzag chain structure, and compound [Cu(rac-chxn)₂][CuCl₃] (6) is a Cu(I)-Cu(II) mixed-valence ionic product generated from the hydrolysis of rac-p-picchxn associated with the reduction of Cu(II) ion. The two bis-pyridyl-bis-amine ligands possess a chelating-bridging mode in forming infinite network and a chelating-only mode in forming discrete complexes. These metal–organic architectures show the influence of metal ion combining with organic ligand and anion on the structure variation. Noteworthy, chain polymers 2 and 5 could be utilized in the removal of methyl orange (MO), acid orange 7 (AO7), and malachite green (MG) from water through adsorptive processes. The adsorption dynamics of MO and AO7 on 2 and MG on both 2 and 5 obeyed a pseudo-second-order kinetics while that of MO and AO7 on 5 followed a pseudo-first-order kinetics.

之二吡啶基-双-胺配体，反式-1,2-双（米-picolyamino）环己烷（外消旋-米-picchxn）和反式-1,2-双（p -picolyamino）环己烷（外消旋- p -picchxn衍生自反式-1,2-二氨基环己烷（rac -chxn）的）与CuCl ₂，ZnCl ₂，ZnBr ₂，Co（NO ₃）₂和CdCl ₂通过反应物缓慢扩散组装，得到相应的金属配合物。络合物[Cu（R，R - m-picchxn）Cl ₂ ]（1）和[Zn（rac - m -picchxn）Br ₂ ]（3）是单核配位结构，复合物[Zn ₂（rac - m -picchxn）Cl ₄ ] _n（2）采用一维（1D）螺旋链，复杂{[Co（R，R - p- picchxn）（NO ₃）₂ ]·THF·2 / 3H ₂ O} _n（4）具有二维（2D）kgm层结构，复杂的[CD（外消旋-p -picchxn）Cl ₂ ] _n（5）适合一维双链之字形链结构，化合物[Cu（rac -chxn）₂ ] [CuCl ₃ ]（6 ）是Cu（I）-Cu（II）rac - p- picchxn水解产生的混合价离子产物，与Cu（II）离子的还原有关。两种双吡啶基-双胺配体在形成无限网络时具有螯合-桥接模式，在形成离散复合物时具有仅螯合模式。这些金属有机结构显示了金属离子与有机配体和阴离子结合对结构变异的影响。值得注意的，链聚合物2和5可用于通过吸附过程从水中去除甲基橙（MO），酸性橙7（AO7）和孔雀石绿（MG）。MO和AO7在2和MG上分别在2和5上的吸附动力学服从拟二级动力学，而MO和AO7在5上的吸附动力学服从拟一级动力学。