Tri- and hexanuclear heterometallic Ni(II)–M(II) (M = Ca, Sr and Ba) bis(salamo)-type complexes: synthesis, structure and fluorescence properties

摘要: Three heterometallic Ni(II)–M(II) (M = Ca, Sr and Ba) complexes, two discrete heterotrinuclear complexes [Ni2(L)Ca(OAc)2(CH3OH)2]·2C2H5OH·2CHCl3 (1) [Ni2(L)Sr(OAc)2(CH3OH)2]·2CH3OH·2CH2Cl2 (2) a heterohexanuclear dimer [Ni2(L)Ba(OAc)2(CH3OH)2(H2O)]2·2CH3OH (3), were synthesized with naphthalenediol-based acyclic bis(salamo)-type ligand (H4L), characterized by elemental analyses, IR, UV-vis spectra, fluorescence spectra X-ray crystallography. The acquired the reaction of H4L 2 equiv. Ni(OAc)2·4H2O 1 M(OAc)2 Ba). crystal structures 1–3 have been determined single-crystal diffractions. Owing to different nature N2O2 O6 sites H4L, introduction metal(II) atoms site-selective moiety, leads Ni(II) occupied both sites, an alkaline earth metal atom site (L)4− unit, respectively. Furthermore, properties discussed.