127932-72-3Relevant academic research and scientific papers
Phosphoraneiminato complexes of rhenium(VII). Syntheses and crystal structures of [ReO3(NPR3)] (R = Ph, Et) and of [ReO(OSiMe3)3(Me3SiNPEt3)]
Schlecht, Sabine,Deubel, Dirk V.,Frenking, Gernot,Geiseler, Gertraud,Harms, Klaus,Magull, J?rg,Dehnicke, Kurt
, p. 887 - 891 (2008/10/08)
The phosphoraneiminato complexes [ReO3(NPR3)] with R = Ph (1) and R = Et (2) are made from dirhenium heptaoxide and the silylated phosphoraneimines Me3SiNPR3. 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° (1) and 160.6° (2), respectively. In the rhenium(V) complex 3 the oxoligand occupies the apical position of the tetragonal pyramidal coordination of the rhenium atom, while the oxygen atoms of the Me3SiO- groups take the basic positions along with the nitrogen atom of the phosphaneimine molecule.
Reactions of Re2O7 with Iminophosphoranes - Crystal Structure of (O3ReN=PPh2)2C2H4
Roesky, Herbert W.,Hesse, Detlev,Rietzel, Mathias,Noltemeyer, Mathias
, p. 72 - 76 (2007/10/02)
Re2O7 reacts with (Me3SiN=PPh2)2CH2, (Me3SiN=PPh2)2C2H4 and Me3SiN=PPh3 to give (O3ReN=PPh2)2CH2 (3), (O3ReN=PPh2)2C2H4 (6) and Ph3P=NReO3 (7). 6 has been characterized by X-ray crystallography.The complex crystallizes in the space group P 1 with unit cell dimensions a = 837.4(4), b = 873.0(5), c = 1102.5(6) pm, a = 112.53(4), β = 98.54(4), γ = 100.59(4) deg, and Z = 1.The structure demonstrates that the bis(diphenylphosphinimino)ethane group is bridging two ReO3 units.
