Ionothermal Synthesis and Crystal Structure of One Two-Dimension Co(II) Metal–Organic Framework Based on 4,4′-Bipyridine-N,N′-Dioxide

Abstract

A new two-dimensional (2D) Co(II) metal–organic framework [Co(dpdo)₂(H₂O)Br₂]_n 1 has been synthesized by ionothermal method and characterized by elemental analysis, IR spectroscopy, and single-crystal X-ray diffraction, where dpdo is 4,4′-bipyridine-N,N′-dioxide. Co(II) atom has a distorted octahedral environment with a O₄Br₂ donor set from three dpdo ligands, one coordinated water molecule and two bromine anions. The structure of 1 is a gridlike (4,4)-connected 2D layer network constructed by each dinuclear Co(II) secondary building unit as a node and each μ-4,4,4′-dpdo as a bar. A 2D structure is held together with its neighboring ones via multiform hydrogen bonds to form a three-dimensional supramolecular structure.

Keywords:

• cobalt (II)
• crystal structure
• ionothermal reaction
• metal-organic framework

Additional information

Funding

This work was supported by the Foundation for University Youth Key Teacher of Henan Province of China, the Foundation of Henan Educational Committee of China and the Foundation Co-established by the Province and the Ministry of Henan University.