Bis(Thiosemicarbazide)Copper(II) 1,5-Naphthalenedisulfonate Complex [Cu(Тsc)2](1,5-Nds): Synthesis and Crystal and Molecular Structures

Abstract

The synthesis, analysis, and IR spectroscopic, thermogravimetric, and X-ray diffraction study of [Cu(Тsc)₂](Nds) (I), where Тsc is thiosemicarbazide NH₂NHС(=S)NH₂, and 1,5-Nds^2– is the doubly deprotonated 1,5-naphthalenedisulfoacid anion C₁₀H₆(SO₃)₂^2–, have been performed. Crystal structure units in complex I are [Cu(Тsc)₂]²⁺ centrosymmetric complex cations and (Nds)^2– anions (including those in inversion centers). The copper atom is coordinated to the vertices of a square via the two sulfur and two nitrogen atoms of the two bidentate-chelate (S,N) ligands Тsc. Crystal structure units in complex I are linked together by a branched network of weak nonlinear N–Н···О hydrogen bonds with participation of donors (all the five independent hydrogen atoms of the two NH₂ groups and NH group of the [Cu(Tsc)]²⁺ complex cation) and acceptors (all the three independent oxygen atoms of the sulfato group of the 1,5-Nds^2– anion).