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Reactivity of bis[{2,6-(dimethylamino)methyl}phenyl]telluride with Pd() and Hg(): isolation of the first Pd() complex of an organotellurenium cation as a ligand
Ist Teil von
New journal of chemistry, 2019-08, Vol.43 (33), p.13225-13233
Ort / Verlag
Cambridge: Royal Society of Chemistry
Erscheinungsjahr
2019
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Intramolecularly coordinated homoleptic diorganotelluride L
2
Te (
6
) [where L = 2,6-(Me
2
NCH
2
)
2
C
6
H
3
] was synthesized and its reactions with Pd(
ii
) and Hg(
ii
) precursors were explored. The reaction of
6
with SO
2
Cl
2
and K
2
PdCl
4
resulted in the formation of the first example of a Pd(
ii
) complex, LTePdCl
3
(
7
), with any organotellurenium cation (LTe
+
) as a ligand. When diorganotelluride
6
was reacted with HgCl
2
, the reaction afforded the tellurenium cation [LTe]
2
+
[Hg
2
Cl
4
]
2−
(
8
). The reaction of
6
with [(PhCN)
2
PdCl
2
] afforded the Pd(
ii
)-telluroether complex L
2
TePdCl
2
(
9
). Diorganotelluride
6
and complexes (
7-9
) were characterized by single-crystal X-ray diffraction studies. The crystallographic studies suggested that in complex
7
, the Te(
ii
) center was 'ambiphilic' in nature in the sense that while Te(
ii
) acted as a donor to the Pd(
ii
) ion, at the same time, it accepted electrons from the N-donor side arms
via
secondary bonding interactions. The donation of electrons from Te(
ii
) to Pd(
ii
) in complex
7
was further substantiated by Natural Bond Order (NBO) analysis.
The first complex of an organotellurenium cation as a ligand with Pd(
ii
) is reported.