Mechano-chemical syntheses of new cobalt(II) complexes of alkyl 2-(pyridine-2yl-methylene) hydrazinecarboxylates: Crystal structures, spectroscopic and photoluminescence properties

Subramani Sathiyakumar, Pitchai Selvam, Sudhadevi Antharjanam, Furuck Lukmanul Hakkim, Krishnan Srinivasan, William T.A. Harrison

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

New cobalt (II) complexes of general formula [Co(L) (NO3) (H2O)2]·NO3 (L = methyl 2-(pyridine-2yl-methylene) hydrazinecarboxylate, C8H9N3O2 (2-PYMC) (1) and ethyl 2-(pyridine-2yl-methylene) hydrazinecarboxylate, C9H11N3O2 (2-PYEC) (2), have been synthesized and characterized by elemental analysis, UV–vis, IR, and photoluminescence measurements. The crystal structures of 1 and 2 reveal the presence of CoN2O5 pentagonal-bipyramidal coordination polyhedra in each complex: the basal plane consists of an N, N, O-tridentate 2-PYMC/2-PYEC ligand and a chelating nitrate anion and the axial sites are occupied by water molecules. The crystal structures are consolidated by O–H⋯O and C–H⋯O hydrogen bonds.

Original languageEnglish (US)
Article number127666
JournalJournal of Molecular Structure
Volume1205
DOIs
StatePublished - Apr 5 2020
Externally publishedYes

Bibliographical note

Funding Information:
This work is funded by DST-SERB , India under EMEQ Scheme ( SB/EMEQ-164/2014 ). Appendix A

Publisher Copyright:
© 2019 Elsevier B.V.

Keywords

  • Crystal structure
  • Hydrazinecarboxylate
  • Metal complex
  • Photoluminescence

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