Abstract
A new hydrazone, Z-ethyl 2-(pyridine-2yl-methylene) hydrazine carboxylate(C9H11N3O2; Hpyec) and its metal complexes bis(Z-ethyl 2-(pyridine-2yl-methylene) hydrazine carboxylate) nickel(II) monohydrate, [Ni(pyec)2]·H2O (1) and bis(acetato)(Z-ethyl 2-(pyridine-2yl-methylene) hydrazine carboxylate) cadmium (II), [Cd(Hpyec)(CH3COO)2](2), have been prepared by mechano-chemical syntheses and characterized by elemental analysis, UV-visible, IR and NMR spectroscopy, TG-DTA, and solid state emission techniques. The X-ray single crystal structures of both complexes were determined: in 1, the Ni2+ion is coordinated by two N, N, O-tridentate anionic ligands to generate a distorted cis-NiO2N4 octahedron. In 2, the cadmium atom is seven-coordinated by one neutral N,N.O-tridentate ligand and two chelating acetate ions to generate a very-distorted CdN2O5 pentagonal bipyramid with the Hpyec atoms occupying both axial and one equatorial site. Crystal data: 1, C18H22N6NiO5, Mr = 461.12, monoclinic, P21/c, a = 10.8759 (3) Å, b = 11.7055 (4) Å, c = 16.8424 (5) Å, = 108.583 (1), V = 2032.38 (11) Å3, Z = 4, R(F) = 0.023, wR(F2) = 0.065;2, C13H17CdN3O6, Mr = 423.69, monoclinic, Cc, a = 13.0215 (10) Å, b = 15.8104 (11) Å, c = 7.99 (6) Å, = 96.692 (2), V = 1621.7 (2) Å3, Z = 4, R(F) = 0.017, wR(F2) = 0.038.
Original language | English |
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Pages (from-to) | 3521-3533 |
Number of pages | 13 |
Journal | Journal of Coordination Chemistry |
Volume | 71 |
Issue number | 21 |
Early online date | 27 Oct 2018 |
DOIs | |
Publication status | Published - 2018 |
Bibliographical note
This work is funded by DST-SERB, India, Under EMEQ scheme (SB/EMEQ-164/2014).Keywords
- green synthesis
- hydrazone
- metal complexes
- crystal structures
- emission study