Hydrogen Bond Networks of Three Cobalt Coordination Polymers Based on Bis(triazole) and Benzenebiscarboxylate Isomers

摘要

Three hydrogen bond networks of cobalt(II) coordination polymers {[Co(btp)₂(H₂O)₂]·2(1,2-Hbdc)·2H₂O}_n (1), {[Co(btp)(1,3-bdc)(H₂O)]·1.5H₂O}_n (2) and {[Co(btp)₂(H₂O)₂]·(1,4-bdc)}_n (3) were synthesized by 1,3-bis(1,2,4-triazol-1-yl)propane (btp) and benzenedicarboxylate position isomers. Complex 1 is comprised of [Co(btp)₂(H₂O)]_n2n+ 1D cation chains, 1,2-Hbdc? anions and lattice water molecules. The structure of 2 is an undulated 2D (4,4) network. Two adjacent networks interpenetrate each other to form a new 2D double-layers network which is sustained by the hydrogen bond interactions in 2. Complex 3 is comprised of [Co(btp)₂(H₂O)]_n2n+ 1D cation chains and 1,4-bdc2? anions. These [Co(btp)₂(H₂O)]_n2n+ 1D cations and 1,2-Hbdc?/1,4-bdc2? anions form 2D hydrogen bond networks in 1 and 3. The thermal stabilities of 1, 2 and 3 were investigated.