Crystal structures of [(Me2AsO2)2{Me2AsO(OH) }{WO(O2)}2O]·H2O and [NMe4][(Ph2PO2)2{WO2 (O2)}2{WO(O2)(OH)(OH 2)}]·EtOH· H2O·0.5MeOH
Abstract
The crystal structures of the complexes
[(Me
2
AsO
2
)
2
{Me
2
AsO(OH)
}{WO(O
2
)}
2
O]·H
2
O
1 and
[NMe
4
][(Ph
2
PO
2
)
2
{WO
2
(O
2
)}
2
{WO(O
2
)(OH)(OH
2
)}]·EtOH·H
2
O·0.5MeOH
2 have been determined and their Raman and infrared spectra
recorded. In the binuclear complex 1 two distorted
pentagonal-bipyramidal WO
7
units are bridged via two
tetrahedral Me
2
AsO
2
ligands, a µ-oxo and the
oxygen atom of a protonated Me
2
AsO(OH) ligand. The trinuclear
complex 2 has two {WO(O
2
)
2
} units
and one {WO(O
2
)(OH)(H
2
O)} unit linked
via a µ
3
-oxo, two µ-oxo and two
diphenylphosphinate ligands. In both complexes the peroxide ligands are
side bonded in a symmetric η
2
fashion.
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