Synthesis, structure and spectroscopy of a copper complex of the chiral pendant-arm macrocycle N,N′,N′′-tris[2S-2-hydroxypropyl]- 1,4,7-triazacyclononane

Abstract

The preparation, crystal structure and spectroscopy of [Cu(H₃L)](ClO₄)₂] (H₃L = N,N′,N′′-tris[2S-hydroxypropyl]-1,4,7-triazacyclononane) is presented. The complex crystallizes in the monoclinic space group P2₁/c, a = 13.954(5), b = 9.700(4), c = 17.883(7) Å, β = 99.548(8)°, Z = 4; R1 = 0.0665, wR2 = 0.1826. The central copper ion is coordinated to three nitrogen atoms of the macrocycle and three oxygen atoms from the pendant hydroxypropyl groups, forming a distorted octahedral coordination sphere.

Keywords:

• Copper
• Crystal structure
• Macrocycle
• Spectroscopic properties

Acknowledgements

This work was supported by the NNSF of China (No. 20171026) and the NSF of Tianjin (No. 013605811).

Supplementary Data

Crystallographic data have been deposited with the Cambridge Crystallographic Data Centre, CCDC No. 219829. Copies of this information can be obtained free of charge from The Director, CCDC, 12 Union road, Cambridge, CB2 1EZ, UK (fax: + 44-1223-336-033; email: [email protected] or http://www.ccdc.cam.ac.uk).