Syntheses and characterization of trans-[NiL2(NCS)2][L = 2-(aminomethyl) pyridine], trans-[image(NSC)2][L′ = 2-(2-aminoethyl)pyridine] and trans-[image(NSC)2] [L″ = 2-(2-methylaminoethyl)pyridine] complexes: X-ray single crystal structure of trans-[image(

[NiL2(NCS)2] (1) [L = 2-(aminomethyl)pyridine], [View the MathML sourceNiL2′(NCS)2] (2) [(L′) = 2-(2-aminoethyl)pyridine and [View the MathML sourceNiL2″(NCS)2] (3) [L″ = 2-(2-methylaminoethyl)pyridine] have been synthesized from solution. All the complexes possess trans geometry as is evident from solid state UV–Vis spectral study and X-ray single crystal structure analysis of complex 2 unambiguously proves trans geometry of the species.