Four rare structurally characterized hetero-pentanuclear [ZnLn] bis(salamo)-type complexes: syntheses, crystal structures and spectroscopic properties.

Four new hetero-pentanuclear 3d-4f complexes [Zn(L)La(NO)(OEt)(HO)] (1), [Zn(L)Ce(NO)(OMe)(MeOH)] (2), [Zn(L)Pr(NO)(OEt)(EtOH)] (3) and [Zn(L)Nd(NO)(OMe)(MeOH)] (4) were synthesized by the reactions of a newly synthesized octadentate bis(salamo)-based tetraoxime ligand (HL) with Zn(OAc)·2HO and Ln(NO)·6HO (Ln = La, Ce, Pr and Nd), respectively, and characterized elemental analyses, FT-IR, UV-Vis spectroscopy and single crystal X-ray crystallography. The X-ray crystallographic investigation revealed that all Zn ions were located in NO coordination spheres, and possessed a trigonal bipyramid coordination environment. The Ln ion lay in an O coordination sphere, and adopted a distorted square antiprismatic coordination environment.

Homo- and heterometallic Cu(II)-M(II) (M = Ca, Sr and Ba) bis(salamo)-based complexes: Syntheses, structures and fluorescent properties.

Four homo/heterometallic complexes [Cu(L)(μ-OAc)(CHOH) ]·3CHCl (1), [Cu(L)Ca(μ-NO)] (9), [{Cu(L)Sr(μ-NO)}]·CHCHOH (11) and [Cu(L)Ba(μ-OAc)(OAc)] (14), containing an acyclic naphthalenediol-based ligand HL, were synthesized and characterized by elemental analyses, IR, UV-Vis, fluorescence spectra, TG-DTA and X-ray crystallography. The complex 1 was obtained by the reaction of HL with 11 equivalents of Cu(OAc) ·2HO. The heterometallic complexes 9, 11, 14 were acquired by the reaction of HL with 9 equivalents of Cu(OAc)·2HO or Cu(NO)·2HO and 1 equivalent of M(OAc) (M = Ca, Sr and Ba).