Synthesis and crystallographic characterization of a chiral complex of (R)-2-(pyridin-2-ylmethylene)amino-2′-hydroxy-1,1′-binaphthyl(L) with hydrated nickel(II) acetate

✍ Scribed by Baoming Ji; Xiangming Han

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 158 KB
• Volume: 42
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/crat.200710934

✦ Synopsis

A chiral complex of (R)-2-((pyridin-2-ylmethylene)amino)-2'-hydroxy-1,1'-binaphthyl (L) with hydrated nickel (II) acetate has been synthesized and spectroscopically characterized. The crystal structure of [NiL 2 (CH 3 OH)(CH 3 COO)]CH 3 COO•CH 3 OH has been determined by single-crystal X-ray diffraction. The complex crystallizes in the orthorhombic space group P2(1) 2( 1) 2(1) with cell constants a = 15.1035 ( 19), b = 17.836 (2), c = 18.730 (2)Å, α = β = γ = 90.00°, Z = 4. The structure was solved by direct methods and refined to R = 0.0346 (wR 2 = 0.0863). The analytical result of the crystal structure indicates that a pair of L ligands chelate to a Ni (II) atom in an asymmetric fashion with one Ni-N bond being longer than the other, the Ni (II) atom is further coordinated by one methanol molecule and one acetate anion to form a distorted octahedral geometry. In the crystal of the complex, the coordination cation [NiL 2 (CH 3 OH)(CH 3 COO)] + , the uncoordinated methanol molecule and uncoordinated acetate anion are further assembled into onedimensional chain structure via intermolecular hydrogen bonds along the a-axis.