Crystal structure of bis-[N-(1-pyrazin-2-yl-ethylidene)-cyanoacetic acid-hydrazonato-κ³ O,N,N′)]-zinc(II), C₁₈H₁₆N₁₀O₂Zn

Abstract

C18H16N10O2Zn, triclinic, P1̄ (no. 2), a = 10.218(7) Å, b = 10.490(7) Å, c = 11.101(8) Å, α = 79.590(11)°, β = 65.913(12)°, γ = 66.785(10)°, V = 998.0(12) Å3, Z = 2, Rgt(F) = 0.0516, wRref(F2) = 0.1323, T = 293(2) K.

Crystal structure of bis(3-bromo-N-(1-(3-methylpyrazin-2-yl)ethylidene)benzohydrazonato-κ3 O,N,N′)cadmium(II) hemihydrate, C28H25N8O2.5Br2Cd

“…The C=O bond of the hydrazone ligand is enolized, which could be confirmed by the bond length of C-O being 1.270(6)/ 1.277(6) Å [6,7]. All bond distances and angles are in their normal ranges, and can be compared with those in previously reported complexes [8,9]. The central Cd(II) ion with a distorted octahedral coordination geometry is surrounded by two anionic ligands with a ON 2 donor set, which is the most common coordinaiton mode in pyrazine hydrazone-metals [6,7].…”