Trinuclear Co(II) and Mononuclear Ni(II) Salamo-Type Bisoxime Coordination Compounds

Ling-Zhi Liu,Jian-Chun Ma,Wen-Kui Dong,Xiao-Yan Li,Quan-Peng Kang

doi:10.3390/cryst8010043

Abstract

One trinuclear Co(II) coordination compound [{CoL1(OAc)(CH3COCH3)}2Co] (1) and one unprecedented mononuclear Ni(II) coordination compound [Ni(L2)2] (2), constructed from a Salamo-type ligand H2L1 were synthesized and characterized by elemental analyses, IR, UV-vis spectra, and single crystal X-ray diffraction analyses. The results show that the Co(II) atoms have no significant distortion in CoO6 or CoO4N2 octahedrons in coordination compound 1. Interestingly, in coordination compound 2, the desired tri- or mono-nuclear Salamo-type Ni(II) coordination compound was not obtained, but an unprecedented Ni(II) coordination compound [Ni(L2)2] was synthesized, the Ni1 atom having no significant distortion in the NiO2N2 planar quadrilateral geometry. Furthermore, the antimicrobial activities of coordination compound 1 and previously reported coordination compound [{CoL1(OAc)(MeOH)}2Co]·2MeOH (3) are discussed.

Highlights

Other works have contributed to researching mono, multi, homo- or heteromultinuclear metal coordination compounds having Salamo-type ligands or their derivatives [33,34,35]
In coordination compound 2, the Ni1 atom has no significant distortion in the NiO2 N2 planar quadrilateral geometry
The results show that the atoms coordination compound 2 were formulated and synthesized

Summary

Introduction

N2 O2 -type chelating ligands and their metal coordination compounds have achieved considerable attention in inorganic chemistry over several decades [1,2,3], especially in the area of their potential application in catalysts [4,5], biological fields [6,7,8,9,10], electrochemical conducts [11], ion recognitions [12,13,14,15,16], supramolecular architecture [17,18,19,20], as well as magnetic [21,22,23,24] and luminescence [25,26] materials. Other works have contributed to researching mono-, multi-, homo- or heteromultinuclear metal coordination compounds having Salamo-type ligands or their derivatives [33,34,35]. A previously reported coordination compound [{CoL1 (OAc)(MeOH)}2 Co]·2MeOH (3) was synthesized [36]. Compared with the previously reported coordination compounds [36,37,38,39,40,41,42,43,44,45,46,47,48,49], coordination compounds 1 and 3 with a similar structure are both symmetrically trinuclear The content of these previous works is mainly based on the study of solvent effect and fluorescence properties.

Materials and Methods

H NMR spectra determined by German

Synthesis of H22L11

Synthetic

Synthesis of Coordination Compound 2

Nlight

Crystal Structures of Coordination Compounds 1 and 2

C18 H18 Cl2 N2 NiO4

IR Spectra

UV-Vis Spectra

Description of the Crystal Structures

Crystal Structure of Coordination Compound 1