A linear chain of carbazolyl-bis(tetrazole) supported copper(II) dimers held together by bridging tribromide anions

Abstract

Reaction of NaCzT^iPr with CuBr, followed by exposure to air, results in formation of {[Cu(κ³-N₃-μ-N’-CzT^iPr)(μ-OH)]₂[μ-Br₃]}_x, 2. The structure of 2 in the solid state consists of hydroxo-bridged Cu(II) dimers connected into a linear chain polymer by bridging Br₃ ^– units. The Cu(II) centers have axially elongated coordination with a Br₃ ^– terminus and a bridging N from a tetrazole on the adjacent Cu forming the ligands on the long axis. The Br₃ ^– unit is linear with short Br–Br distances while the Cu–Br–Br angle is close to 90°. The reaction involves oxidation of both the Cu(I) and Br^– of CuBr in air.

Graphical Abstract

Keywords:

• Copper
• coordination complexes
• bridging hydroxo
• bridging tribromide
• crystallography
• carbazolyl
• tetrazole
• oxidation

Disclosure statement

The authors claim no conflict of interest or financial obligations in this work.

Additional information

Funding

This work was supported by the Natural Sciences and Engineering Research Council of Canada [Grant No. RGPIN/03707-2014]; MITACS Globalink Research Internship.