{μ-2-[(3-Amino-2,2-dimethylpropyl)iminomethyl]-6-methoxyphenolato-1:2κ 5 O 1 , O 6 : N , N ′, O 1 }{2-[(3-amino-2,2-dimethylpropyl)iminomethyl]-6-methoxyphenolato-1κ 3 N , N ′, O 1 }-μ-azido-1:2κ 2 N : N -azido-2κ N -methanol-2κ O -dinickel(II)

• Published in: Acta crystallographica. Section E, Structure reports online Structure reports online, 2012-08, Vol.68 (8), p.m1027-m1028
• Main Authors: Ghaemi, Akbar, Rayati, Saeed, Fayyazi, Kazem, Ng, Seik Weng, Tiekink, Edward R. T.
• Format: Article
• Language: English
• ISSN: 1600-5368; 1600-5368
• DOI: 10.1107/S1600536812029662

Two distinct coordination geometries are found in the binuclear title complex, [Ni 2 (C 13 H 19 N 2 O 2 ) 2 (N 3 ) 2 (CH 3 OH)], as one Schiff base ligand is pentadentate, coordinating via the anticipated oxide O, imine N and amine N atoms (as for the second, tridentate, ligand) but the oxide O is bridging and coordination also occurs through the methoxy O atom. The Ni II atoms are linked by a μ 2 -oxide atom and one end of a μ 2 -azide ligand, forming an Ni 2 ON core. The coordination geometry for the Ni II atom coordinated by the tridentate ligand is completed by the methoxy O atom derived from the pentadentate ligand, with the resulting N 3 O 3 donor set defining a fac octahedron. The second Ni II atom has its cis -octahedral N 4 O 2 coordination geometry completed by the imine N and amine N atoms of the pentadentate Schiff base ligand, a terminally coordinated azide N and a methanol O atom. The arrangement is stabilized by an intramolecular hydrogen bond between the methanol H and the oxide O atom. Linear supramolecular chains along the a axis are formed in the crystal packing whereby two amine H atoms from different amine atoms hydrogen bond to the terminal N atom of the monodentate azide ligand.