TY - JOUR
T1 - Mechanochemical syntheses, crystal structures, and photo-luminescent properties of a new hydrazone and its nickel and cadmium complexes
AU - Sathiyakumar, Subramani
AU - Selvam, Pitchai
AU - Hakkim, Faruck Lukmanul
AU - Srinivasan, Krishnan
AU - Harrison, William T A
N1 - This work is funded by DST-SERB, India, Under EMEQ scheme (SB/EMEQ-164/2014).
PY - 2018
Y1 - 2018
N2 - 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.
AB - 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.
KW - green synthesis
KW - hydrazone
KW - metal complexes
KW - crystal structures
KW - emission study
U2 - 10.1080/00958972.2018.1519553
DO - 10.1080/00958972.2018.1519553
M3 - Article
VL - 71
SP - 3521
EP - 3533
JO - Journal of Coordination Chemistry
JF - Journal of Coordination Chemistry
SN - 0095-8972
IS - 21
ER -