Synthesis, crystal structure, and magnetic properties of two bent trinuclear Cu(II)/Ni(II) complexes of ligands derived from N-acyl-salicylhydrazides

A 1D copper(II) chain featuring novel hexanuclear secondary building blocks: Synthesis, crystal structure and magnetic property

“…The size of the ring of the metallamacrocycle can be tuned by varying the steric volume of the N-acyl residue of the ligand. Linear trinuclear compounds can be obtained when bivalent metal ions such as Co(II), Ni(II), Cu(II) and Zn(II) were used [4,[12][13][14][30][31][32][33][34].…”

“…It is well known that the careful selection of the organic ligands is one of the key factors for the synthesis of the coordination compounds with novel structures. As a type of multidentate ligands containing N, O donors, the N-acyl-salicylhydrazide ligands have attracted much attention and have been widely used to construct polynuclear metal complexes with interesting structural motifs [4,[12][13][14]. Diazabridged metallamacrocycles can be readily obtained when the Nacyl-salicylhydrazide ligands coordinate in trianionic pentadentate mode to a trivalent octahedral metal ion such as Ga(III), Co(III), Fe (III) and Mn(III) [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29].…”

“…The size of the ring of the metallamacrocycle can be tuned by varying the steric volume of the N-acyl residue of the ligand. Linear trinuclear compounds can be obtained when bivalent metal ions such as Co(II), Ni(II), Cu(II) and Zn(II) were used [4,[12][13][14][30][31][32][33][34].In contrast to N-acyl-salicylhydrazide ligands which contain only one salicylhydrazide group, the ligands derived from the acylation of multi-carboxyl acid and salicylhydrazide, which contain two or more salicylhydrazide groups, have never been used in the synthesis of the coordination compound. This type of ligand possesses much more coordination sites, which may be more favorable for the construction of polynuclear complexes.…”