Influence of the pyrazine substituent on the structure and magnetic properties of dicyanamide-bridged cobalt(ii) complexes.
Substituted pyrazines were successfully used to prepare two new coordination polymers of formulas {[Co(dca)2(NH2pyz)2]·H2O}n (1) and [Co3(dca)6(HOpyz)5(H2O)2]n (2) [dca = dicyanamide, NH2pyz = 2-aminopyrazine and HOpyz = 2-hydroxypyrazine] whose structures were determined by single-crystal X-ray crystallography. The structure of 1 consists of a two-dimensional rhombus grid of cobalt(II) ions where the dca ligand adopts the μ1,5 bridging mode with trans-positioned monodentate NH2pyz molecules completing the six-coordination around each metal ion. Compound 2 exhibits a stair-like two-dimensional structure where the intralayer connections are performed by the dca and HOpyz groups exhibiting μ1…
CCDC 1867783: Experimental Crystal Structure Determination
Related Article: Joanna Palion-Gazda, Katarzyna Choroba, Barbara Machura, Anna Świtlicka, Rafał Kruszynski, Joan Cano, Francesc Lloret, Miguel Julve|2019|Dalton Trans.|48|17266|doi:10.1039/C9DT02976A
CCDC 1867784: Experimental Crystal Structure Determination
Related Article: Joanna Palion-Gazda, Katarzyna Choroba, Barbara Machura, Anna Świtlicka, Rafał Kruszynski, Joan Cano, Francesc Lloret, Miguel Julve|2019|Dalton Trans.|48|17266|doi:10.1039/C9DT02976A