Synthesis and structural characterization of a novel coordination polymer [Cd₂(SCN)₂(C₈H₆NO₂)₂(H₂O)₄]_n

Abstract

A new three-dimensional organic/inorganic coordination polymer was synthesized by the hydrothermal reaction of Cd(CH₃COO)₂·2H₂O, KSCN and 3-(3-pyridyl)acrylic acid. The product [Cd₂(SCN)₂(C₈H₆NO₂)₂ (H₂O)₄] _n has an infinite three-dimensional structure with a diamondoid network. It crystallizes in the triclinic system, space group

with a = 6.961(2), b = 10.308(3), c = 16.944(6) Å, α = 91.567(6), β = 90.365(7), γ =  98.385(6)°. In this compound, the Cd(II) centers lie in an octahedral environment. The crystal structure of this compound was determined by single-crystal X-ray diffraction methods and it was characterized by elemental analysis (EA), infrared spectra (IR) and thermogravimetric and differential thermal analysis (TG-DTA). The results demonstrate the feasibility of constructing a crystalline metal-organic coordination polymer and also provide a starting point for the design of more robust and potentially functional materials.

Keywords:

• Coordination polymer
• Hydrothermal reaction
• Crystal structure

Acknowledgment

This work was supported by the National Natural Science Foundation of China (No: 20176008).

Supplementary Data

Crystallographic data for the structural analysis have been deposited at the Cambridge Crystallographic Data Center, CCDC No. 221823 for the title coordination polymer. Copies of this information may be obtained free of charge via the internet at www.ccdc.cam.ac.uk or e-mail: [email protected].