Synthesis, structural and spectroscopic studies of 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone N(4)-methyl-N(4)-phenyl thiosemicarbazone and its cadmium(II) complex

[Display omitted] •Synthesised a novel thiosemicarbazone (H2L) and its Cd(II) complex.•They are characterised by single crystal XRD.•H2L acts as monoanionic tridentate ligand in cadmium(II) complex. Synthesis, spectral and single crystal XRD studies of a novel ligand 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone N(4)-methyl-N(4)-phenylthiosemicarbazone and its cadmium(II) complex have been communicated in this work. The ligand crystallizes in triclinic system with space group P-1, a(Å)=7.8930(4), b(Å)=11.2019(5), c(Å)=13.0211(7); α(°)=96.175(3), β(°)=100.922(3)°, γ(°)=91.005(3)°, V(Å3)=1123.02(10), r(mg/m3)=1.306 and Z=2. Cadmium(II) complex crystallizes in the monoclinic crystal system with space group P21/c, unit cell dimensions a(Å)=9.6939(5), b(Å)=22.5183(11), c(Å)=21.2054(10); α(°)=90, β(°)=99.960(2), γ (°)=90, V(Å3)=4559.2(4) and Z=4. The packing of the molecules in the crystal lattice is stabilized by intermolecular hydrogen bonds. Spectroscopic data along with crystal structure, confirmed the involvement of azomethine nitrogen, thione sulphur and enolic oxygen of pyrazolone moiety in coordination with the metal ion.