R. T. Criasia
Oct 1, 1987
Citations
0
Influential Citations
6
Citations
Journal
Inorganica Chimica Acta
Abstract
Abstract The crystal structure of tetrabutylammonium tetrakis (4,4,4-trifluoro-1-(2-thienyl)-1,3-butanedione praseodymium(III), (C 4 H 9 ) 4 N(C 8 H 4 F 3 0 2 S) 4 Pr(III), has been determined using 2300 independent, visually estimated intensities and refined by full matrix least- squares methods to R =0.118, R w =0.149. The crystals are monoclinic with a =22.32(5), b =10.45- (2), c =12.23(3) A, β=96.7(4)°. The space group is P 2 /n with Z =2, requiring a 2-fold axis in both the anion and cation. The coordination sphere has an arrangement close to that of a square antiprism but with small distortions in the direction of a dodecahedron. PrO bond distances range from 2.42– 2.47 A.