A novel Co3 +-based asymmetrical building block: Heterobimetallic metallacycles versus coordination networks

A new Co3 +-based asymmetrical building block (1) offering both 2-pyridyl and 3-pyridyl appended groups has been synthesized and utilized for preparing heterobimetallic systems. The reactions of 1 with secondary metals afforded {Co3 +–Zn2 +} metallacycle (2), {Co3 +–Cd2 +} metallacycle‐based coordination polymer (3) and a {Co3 +–Hg2 +} coordination chain (4). The crystallographic studies reveal the importance of asymmetrical building block in generating unique structural motifs.