292037-66-2Relevant academic research and scientific papers
Unsaturated hetero chains, IX([≠]) 1:1- and 2:1-copper(II) complexes from primary N-acylamidines
Eberhardt, Jan K.,Fr?hlich, Roland,Venne-Dunker, Sabine,Würthwein, Ernst-Ulrich
, p. 1739 - 1743 (2007/10/03)
Four different types of six-membered chelate Cu(II) complexes 2-5 have been synthesized from copper(II) salts and primary N-acylamidines (H2N- CR1=N-CR2=O) 1. The twofold positively charged complexes 2-4 contain two neutral ligands around the Cu(II)ion. In the 1:1 compound 2 the copper(II) ion is four coordinate, leading to a distorted square coordination. The 2:1 compounds 3 and 4 show similar structural properties; the approximate square plane of the complexes is complemented by one or two loose apical contacts to the triflate counter ions. In the centrosymmetric, neutral 2:1 complex 5, two anionic ligands interact with the central Cu(II) ion, leading to an approximate square-planar coordination of the Cu(II) ion. The structural versatility of these N-acylamidine complexes is discussed in terms of counter ion and solubility influences. All complexes have been completely characterized, including X-ray diffraction analysis.
