A series of new heterometallic (CuZnII)-Zn-II and (NiZnII)-Zn-II complexes with N- and N,O open-chain multidentate ligands (L-1 = 4,6,6-trimethyl-1,9-diamino-3,7-diazanon-3-ene; L-2 = 3,7-bis(2-aminoethyl)-1,3,5,7-tetraazabicyclo[3.3.1]nonane; L-3 = 1, 15-dihydroxy-7,9,9-trimethyl-3,6,10,13-tetraazapentadec-6-ene and L-4 = 1-hydroxy-9-oxy-4,6,6-trimethyl-3,7-diazanon-3-ene) have been prepared through the "direct template synthesis" approach, which is a combination of classical template reactions of amines with acetone/formaldehyde and the "direct synthesis" method based on using elemental metals as starting materials. There is a significant decrease in the reaction time when the "direct synthesis" method is used compared to the conventional template condensation methods. X-ray crystallographic analyses of the complexes with the general formula M(L)ZnX4 and [(CuLZnCl3)-Zn-4](2) (M = Cu2+, Ni2+; L = L-1-L-3; X = Cl-, NCS-) reveal the presence of long intermolecular distance interactions, such as semi-coordination, S center dot center dot center dot S and H-bonding, in their crystal organization. (c) 2005 Elsevier B.V. All rights reserved.
Shevchenko, D. V., Petrusenko, S. R., Kokozay, V. N., Zhigalko, M. V., Zubatyuk, R. I., Shishkin, O. V., Skelton, B. W., & Raithby, P. R. (2005). Heterobimetallic M/Zn (M = Cu, Ni) complexes with open-chain N- and N,O-ligands: Template synthesis from metal powders and supramolecular crystal structures. Inorganica Chimica Acta, 358(13), 3889-3904. https://doi.org/10.1016/j.ica.2005.06.031