H. Shearer, J. Twiss, K. Wade
Jan 22, 1980
Citations
0
Influential Citations
16
Citations
Journal
Journal of Organometallic Chemistry
Abstract
Abstract Dimethylindium-pyridine-2-carbaldehyde oximate crystallises from benzene in the orthorhombic space group Pbcn, with cell dimensions a 33.15, b 9.54, c = 14.30 A. The unit cell contains eight dimeric oximate molecules [InMe2(ON=CHC5H4N)]2 and four molecules of benzene. Each oximate group coordinates through both its nitrogen atoms to one indium atom, and through its oxygen atom to the other indium atom of the dimer. The dimer thus consists of a row of five fused rings, two terminal pyridine rings, a central 6-membered InONInON ring, and two intervening 5-membered InNCCN rings (I). The indium atoms are 5-coordinate, and adopt a distorted trigonal bipyramidal geometry, in which the NInN “bite” of the oximate ligand is only 69°, and the axial InN bonds to the pyridine nitrogen atoms (2.51 A) are significantly longer than the equatorial InN bonds to the oximate nitrogen atoms (2.28 A). The CInC angle between the bonds to the equatorial methyl groups averages 138°.