Syntheses and characterization of N,N′-dipropyl/diisopropylethane-1,2-diamine complexes of nickel(II) nitrate: Thermal studies and X-ray single crystal structure analysis of cis-nitratobis (N,N′-dipropylethane-1,2-diamine)nickel(II) nitrate

Inamur Rahaman Laskar, Debasis Das, Nirmalendu Ray Chaudhuri, Golam Mostafa, Alan J. Welch

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The blue complex cis-[Ni(dipren)2(NO3)](NO3) 1 and the greenish blue cis-[Ni(dipren)2 (H2O)2](NO3)2 · 2H2O 2 (dpren/dpren = dipropyl/diisopropylethane-1,2-diamine) have been synthesized. Complex 2 upon heating loses four water molecules in a single step and undergoes melting accompanied with colour change, greenish blue to deep green, 2a. Configuration of the complexes 1,2 and 2a have been proposed to be cis-octahedral on the basis of magnetic, IR and electronic spectroscopic studies and confirmed in case of complex 1 by X-ray single crystal structure analysis. The role of steric factor of the alkyl groups on the selectivity of coordinating mode of nitrate ion is studied. © 1998 Elsevier Science Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)1363-1368
Number of pages6
JournalPolyhedron
Volume17
Issue number8
Publication statusPublished - 30 Apr 1998

Keywords

  • Cis-octahedral geometry of nickel(II)
  • N,N′-diisopropylethane-1,2-diamine
  • N,N′-dipropylethane-1,2-diamine
  • Nickel(II) diamine complex
  • Nitratobis(N,N′-dipropylethane-1,2-diamine)nickel(II) nitrate
  • Thermochromism

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