S. Schlecht et al., Phosphoraneiminato complexes of rhenium(VII). Syntheses and crystal structures of [ReO3(NPR3)] (R = Ph, Et) and of [ReO(OSiMe3)(3)(Me3SiNPEt3)], Z ANORG A C, 625(6), 1999, pp. 887-891
Citations number
21
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
The phosphoraneiminato complexes [ReO3(NPR3)] with R = Ph (1) and R = Et (2
) are made from dirhenium heptaoxide and the silylated phosphoraneimines Me
3SiNPR3. The complexes 1 and 2 as well as the red silanolate [ReO(OSiMe3)(3
)(Me3SiNPEt3)] (3), which is formed as a by-product in the synthesis of 2,
are characterized crystallographically. 1 and 2 are monomeric molecules, in
which the phosphoraneiminato ligands NPR3- realize short ReN bonds of 179.
3 pm (1) and 178.6 pm (2), respectively, with large ReNP bond angles of 162
.0 degrees (1) and 160.6 degrees (2), respectively. In the rhenium(V) compl
ex 3 the oxoligand occupies the apical position of the tetragonal pyramidal
coordination of the rhenium atom, while the oxygen atoms of the Me3SiO- gr
oups take the basic positions along with the nitrogen atom of the phosphane
imine molecule.