Open AccessTwo Tetrahalooxomolybdate(V) Structures, [Ph 3 PNPPh 3 ][MoOBr 4 ] and [PPh 4 ][MoOI 4 (H 2 O)]
Author(s) -
Fettinger J. C.,
Mattamana S. P.,
Poli R.
Publication year - 1998
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
eISSN - 1600-5759
pISSN - 0108-2701
DOI - 10.1107/s0108270197010718
Subject(s) - iminium , triphenylphosphine , octahedron , ion , salt (chemistry) , chemistry , ligand (biochemistry) , crystallography , stereochemistry , crystal structure , organic chemistry , catalysis , receptor , biochemistry
Both title compounds, bis(triphenylphosphine)iminium tetrabromooxomolybdate(V), (C36H30NP2) [MoOBr4], and tetraphenylphosphonium aquatetraiodooxomolybdate(V), (C24H20P)[MoOI4(H2O)], form by air oxidation of solutions containing the [Mo3X12](3-) anion, i.e. the bis(triphenylphosphine)iminium salt for X = Br and the tetraphenylphosphonium salt for X = I. Both anions have been reported previously in different salts. The geometry of the tetrabromooxomolybdate(V) anion is square pyramidal with the oxo ligand occupying the apical position, whereas the aquatetraiodooxomolybdate (V) anion can be described as a pseudo-octahedron with the aqua and oxo ligands occupying trans positions.
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