New 3D dicyanamide bridged coordination polymer of Ni(II): Synthesis, crystal structure, magnetic properties and antibacterial assay

• Type: Article in International Scientific Journal
• Date: 2015

Authors

Tabrizi, L (Author) Other; Chiniforoshan, H (Author) Other; araujo, j. p. (Author) FCUP; Lopes, AML (Author) Other; Goerls, H (Author) Other; Plass, W (Author) Other; Mohammadnezhad, G (Author) Other

Journal

Title: Inorganica Chimica Acta

Vol. 426

Pages: 195-201

ISSN: 0020-1693

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 16 Citations

Scopus - 18 Citations

Other information

Authenticus ID: P-00A-20Z

DOI: 10.1016/j.ica.2014.10.030

Abstract (EN): One new coordination polymer of Ni(II), {[Ni(mu(1,5)-dca)(2)(mu-hmt)]H2O}(n), (1), using hmt (hmt = hexamethylenetetramine), and dca (dca = dicyanamide) as bridged ligands has been synthesized and characterized by X-ray single crystal analysis. Compound 1 is a three-dimensional polymer which contains the solvent water molecules. Both dca and hmt are mu(2)-bridged. In addition; thermal stability of 1 is investigated by thermogravimetric (TGA) analysis. Antibacterial activities of complex 1 also show greater activity than the reference antibiotic gentamycin against Klebsiella pneumonia. Magnetic susceptibility measurements revealed weak antiferromagnetic exchange interactions between the nickel centers bridged by long hmt and dicyanamides ligands. A 3D long-range magnetic order is observed below 22 K with a small ferromagnetic component, possibly due to spin canting developing at these low temperatures.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7