Pseudoelementverbindungen. VII [1]. Kristall- und Molekülstruktur von Tris(ethylendiamin)nickel(II)-bis(2-methyl-4-chlorphenoxycyanamidoacetat)

Pseudoelement Compounds VII. 1] Crystal and Molecular Structure of Tris(ethylenediamine)nickel(II)-bis(2-methyl-4-chlorophenoxy-cyanamidoacetate) Surprisingly, in the presence of ethylenediamine 2-methyl-4-chlorphenoxy-cyanamidoactetate reacts with nickel(II) and copper(II) ions preferentially under formation of complexes of the type M(en)₃]X₂. The IR spectra and the X-ray diffraction investigations corresponding to Ni(en)₃]2-Me-ClC₆H₃OCH₂C(O)NCN]₂ show that two cyanamidocarboxylate ions RC(O)NCN]^? are bonded to the complex cation through, in each case, two N? H …? O?C hydrogen bonds between NH protons of ethylenediamine ligands and the carbonyl oxygen atoms. Additionally, in the crystal weak N? H …? N?C bridges were found between the nitrile nitrogen atoms of the anions and NH protons of neighbouring complex cations.