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O,O′-Dimethyl diphenyldithiophosphates of nickel(II) with N-donor ligands
Ist Teil von
Monatshefte für Chemie, 2016-06, Vol.147 (6), p.1037-1043
Ort / Verlag
Vienna: Springer Vienna
Erscheinungsjahr
2016
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
The present work demonstrates the synthesis and characterization of donor stabilized addition complexes of nickel(II) with
O
,
O
′-dimethyl diphenyldithiophosphates [[(ArO)
2
PS
2
]
2
NiL
2
] (Ar = 2,4-(CH
3
)
2
C
6
H
3
, 3,4-(CH
3
)
2
C
6
H
3
, and 3,5-(CH
3
)
2
C
6
H
3
; L = pyridine, 4-ethylpyridine, and 3,4-dimethylpyridine). These complexes were successfully isolated and structurally characterized by single crystal X-ray analysis. The complexes [[(2,4-CH
3
)
2
C
6
H
3
O]
2
PS
2
]
2
Ni(C
5
H
5
N), [[(2,4-CH
3
)
2
C
6
H
3
O]
2
PS
2
]
2
Ni[4-(C
2
H
5
)C
5
H
4
N]
2
, and [[(3,4-CH
3
)
2
C
6
H
3
O]
2
PS
2
]
2
Ni(C
5
H
5
N)
2
were crystallized in the monoclinic crystal system with space group
P
2
1
/
n
, whereas the complex [[(3,5-CH
3
)
2
C
6
H
3
O]
2
PS
2
]
2
Ni[3,4-(CH
3
)
2
C
5
H
3
N]
2
was crystallized in the monoclinic crystal system with different space group
P
2
1
/
c
. X-ray diffraction analysis of complexes reveals a six-coordinated octahedral geometry for the NiS
4
N
2
chromophore, defined by two chelating diphenyldithiophosphate anions as well as two N-donor ligands. Two diphenyldithiophosphate ligands are coordinated to the nickel ion as a bidentate chelating via the two thiolate S atoms, forming a four-membered chelate ring in the equatorial plane. The N atoms from two donor ligands are axially coordinated to the Ni atom in
trans
position.
Graphical abstract