Synthesis and characterisation of molybdenum complexes bearing highly
functionalised imido substituents
Abstract
The monofunctionalised anilines
2-(H
2
N)C
6
H
4
X (where
X = CO
2
H, SO
3
H, or CN) reacted with
sodium molybdate in the presence of NEt
3
and
SiMe
3
Cl in refluxing dme (1,2-dimethoxyethane) to give
[NEt
3
H][MoCl
3
{2-(HN)C
6
H
4
CO
2
}{2-Me
3
SiO
2
CC
6
H
4
N}] 1,
[NEt
3
H]
2
[MoCl
3
{2-NC
6
H
4
SO
3
}{2-(HN)C
6
H
4
SO
3
}] 2 and
[MoCl
2
(2-NCC
6
H
4
N)
2
(dme)] 3.
Treatment of sodium molybdate with anthranilic acid and
2,6-Pr
i
2
C
6
H
3
NH
2
in a 1∶1 ratio afforded
[NEt
3
H][MoCl
3
{2-(HN)C
6
H
4
CO
2
}(NC
6
H
3
Pr
i
2
-2,6)] 4. Products of reactions of sodium molybdate with the
amino acid 2,2-diphenylglycine and 2-aminoterephthalic acid, namely
[NEt
3
H][Mo-
Cl
3
(NCHPh
2
)(H
2
NCPh
2
CO
2
)] 5 and
[NEt
3
H][MoCl
3
{2-HNC
6
H
3
CO
2
(CO
2
H)-1,4}{2-NC
6
H
3
(CO
2
H)
2
-1,4}] 6 respectively are also
reported. Complexes 1 to 6 have been structurally characterised; all
contain pseudo-octahedral geometries about the metal centre, and all
except 3 are salts in which the anion contains a mer
arrangement of chloride ligands.
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