Synthesis and Structural Characterization of Cation-Induced Complex: [Cd₄(SCN)₆(BPB)]_n With One-Dimensional Double Helix

Abstract

In this study, colorless crystals of the title inorganic-organic hybrid compound were obtained from the solution-phase reaction of cadmium thiocyanate with BPB·Br₂ in MeOH/DMF(BPB·Br₂ = 1,4-bis(pyridinium)butane dibromine). And single-crystal X-ray diffraction analysis revealed that this polymer crystallized in triclinic, space group P–1 with unit cell parameters a = 5.8855(5) Å, b = 9.5996(8) Å, c = 11.4358(9) Å, α = 69.9710(10)°, β = 75.1100 (10)°, γ = 75.8180(10)°. In this compound, each cadmium atom is octahedrally coordinated in 2S4N geometry and doubly bridged infinite one-dimensional double helix cadmium thiocyanate chains act as inorganic moiety with dication discretely surrounded.

Supplemental materials are available for this article. Go to the publisher's online edition of Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry to view the supplemental file.

Keywords:

• cadmium thiocyanate complex
• crystal structure
• dication direction

Acknowledgments

The authors acknowledge the NSFC (No.21171148) and open project of State Key Laboratory of Coordination Chemistry.