Syntheses, structures and magnetic properties of two one-dimensional coordination polymers of cobalt(II) and nickel(II) dicyanamide containing a tridentate N-donor Schiff base

Subhasish Kundu, Subhasis Roy, Kishalay Bhar, Rajarshi Ghosh, Chia Her Lin, Joan Ribas, Barindra Kumar Ghosh*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

Two neutral one-dimensional coordination polymers of the type [M(L)(μ1,5-dca)(dca)]n [M = Co (1), Ni (2); L = (N,N-diethyl,N′-(pyridin-2-yl)benzylidene)ethane-1,2-diamine; dca = dicyanamide] are isolated through single-pot reactions of a 1:1:2 M ratio of M(OAc)2·4H2O, L and Na(dca) in MeOH solution at room temperature and characterized on the basis of microanalyses, spectroscopic, thermal and other physicochemical results. X-ray structural study reveals that each metal(II) center in both compounds adopts a distorted octahedral geometry with an MN6 chromophore coordinated by three N atoms of the tridentate Schiff base (L) and three nitrile N atoms of one terminal and two single μ1,5 bridged dca units in a meridional alignment; each μ1,5 bridged dca unit connects other neighboring metal centers in a non-ending fashion affording a 1D chain. Variable-temperature magnetic susceptibility measurements of 1 and 2 show weak antiferromagnetic interactions among the metal centers through μ1,5 dca bridges.

Original languageEnglish
Pages (from-to)78-85
Number of pages8
JournalJournal of Molecular Structure
Volume1038
DOIs
Publication statusPublished - 2013 Apr 24
Externally publishedYes

Keywords

  • Antiferromagnetism
  • Cobalt(II)/nickel(II) coordination polymer
  • Dicyanamide
  • N-donor Schiff base
  • X-ray structure

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy
  • Organic Chemistry
  • Inorganic Chemistry

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