SCHEDULED MAINTENANCE
The ditopic ligands
4′-(diphenylphosphino)-2,2′
:6′,2
″-terpyridine L1 and
4′-(oxodiphenylphosphanyl)-2,2′:6′,2
″-terpyridine L2: co-ordination to iron(II),
ruthenium(II), cobalt(II) and
palladium(II); crystal structures of
[RuL22][PF6]2·H
2O·MeCN and
trans-[PdCl2L12]·
2.5CH2Cl2
Abstract
The new compound
4′-(diphenylphosphino)-2,2′:6′,2
″-terpyridine L
1
has been prepared; in solution it
readily oxidises to the corresponding phosphine oxide, L
2
.
The reaction between L
1
and
FeCl
2
·4H
2
O yielded salts containing
[FeL
1
2
]
2+
, however, oxidation resulted
in the formation of [FeL
2
2
]
2+
. The
corresponding ruthenium(II) complex of L
2
has also
been prepared and structurally characterised as the hexafluorophosphate
salt; attempts to prepare [RuL
1
2
]
2+
always resulted in oxidation of the ligand to L
2
. The
reaction of L
1
with cobalt(II) acetate gave
[CoL
1
2
]
2+
which has been isolated as
the hexafluorophosphate salt. The complexes have been characterised by
IR and NMR spectroscopies, mass spectrometry and elemental analysis.
Compound L
1
also reacts with
[PdCl
2
(NCMe)
2
] to give
trans-[PdCl
2
L
1
2
] which has
been fully characterised; results of an X-ray diffraction study confirm
the trans configuration of the complex.
:6′,2
″-terpyridine L
1
has been prepared; in solution it
readily oxidises to the corresponding phosphine oxide, L
2
.
The reaction between L
1
and
FeCl
2
·4H
2
O yielded salts containing
[FeL
1
2
]
2+
, however, oxidation resulted
in the formation of [FeL
2
2
]
2+
. The
corresponding ruthenium(II) complex of L
2
has also
been prepared and structurally characterised as the hexafluorophosphate
salt; attempts to prepare [RuL
1
2
]
2+
always resulted in oxidation of the ligand to L
2
. The
reaction of L
1
with cobalt(II) acetate gave
[CoL
1
2
]
2+
which has been isolated as
the hexafluorophosphate salt. The complexes have been characterised by
IR and NMR spectroscopies, mass spectrometry and elemental analysis.
Compound L
1
also reacts with
[PdCl
2
(NCMe)
2
] to give
trans-[PdCl
2
L
1
2
] which has
been fully characterised; results of an X-ray diffraction study confirm
the trans configuration of the complex.
Please wait while we load your content...
: