Synthesis and Crystal Structure of N-(2-Pyridylmethyl)-L-Alanine) Isothiocyanate Cobalt(III)  

作　　者：Sally-Judith E. Ntum Awawou G Paboudam Asseng M. Conde Linda D. Nyamen Aminou Mohamadou James Raftery Peter T. Ndifon 

机构地区：[1]Department of Inorganic Chemistry, Faculty of Science, University of Yaoundé 1, Yaoundé, Cameroon [2]Department of Chemistry, Faculty of Science, University of Douala, Douala, Cameroon [3]Institut de Chimie Moléculaire de Reims (ICMR), Groupe de Chimie de Coordination, Université de Reims Champagne-Ardenne, Reims, France [4]School of Chemistry and Materials Science, University of Manchester, Manchester, UK

出　　处：《Crystal Structure Theory and Applications》2017年第3期39-56,共18页晶体结构理论与应用（英文）

摘　　要：The title compound, [N-(2-pyridylmethyl)-(L)-alanine]Co(III) thiocyanate (1) was obtained from the reaction of Co(OOCH3)2·H2O with the tridentate reduced Schiff base ligand, N-(2-pyridylmethyl)-(L)-alanine (L) and NH4SCN and characterized by elemental analysis, IR, UV-visible, TGA and single- crystal X-ray diffraction. Structural and spectroscopic analyses reveal [Co(L)2)]SCN to be monomeric with Cobalt(III) adopting a pseudo-octahedral geometry, coordinating to two reduce Schiff base ligands. In the crystal lattice, the thiocyanate anion forms an intermolecular SCN···HNamine hydrogen bond, while adjacent monomers are linked by intermolecular Ocarboxyl···HNamine···H-bonds to form a supramolecular network. This work is therefore undertaken in an attempt to construct coordination framework structures of varying properties using the mixed-ligand strategy involving reduced Schiff bases and the thiocyanate ion.The title compound, [N-(2-pyridylmethyl)-(L)-alanine]Co(III) thiocyanate (1) was obtained from the reaction of Co(OOCH3)2·H2O with the tridentate reduced Schiff base ligand, N-(2-pyridylmethyl)-(L)-alanine (L) and NH4SCN and characterized by elemental analysis, IR, UV-visible, TGA and single- crystal X-ray diffraction. Structural and spectroscopic analyses reveal [Co(L)2)]SCN to be monomeric with Cobalt(III) adopting a pseudo-octahedral geometry, coordinating to two reduce Schiff base ligands. In the crystal lattice, the thiocyanate anion forms an intermolecular SCN···HNamine hydrogen bond, while adjacent monomers are linked by intermolecular Ocarboxyl···HNamine···H-bonds to form a supramolecular network. This work is therefore undertaken in an attempt to construct coordination framework structures of varying properties using the mixed-ligand strategy involving reduced Schiff bases and the thiocyanate ion.

关 键 词：Cobalt(III) (L)-Alanine THIOCYANATE TRIDENTATE Reduced Schiff Base Crystal Structure 

分 类 号：O6[理学—化学]