Chemistry Reference
In-Depth Information
the ligand is thought to be a tetradentate ligand with a trigonal
pyramidal structure (i.e., with the two 6-methylpyridyl groups binding
strongly to the copper center).
Hofmann and co-workers recently reported on a new dicopper
complex formed by treating a neutral copper(I) ethylene complex
containing the anionic iminophosphanamide ligand
with
dioxygen at -25 °C. 148 This dicopper
complex is the first reported
neutral dicopper complex, and it has a UV-vis absorption maximum
at 444 nm which is characteristic of other reported dicopper
complexes
(~385-455
nm).
X-ray
characterization
of
shows that its Cu-Cu distance of 2.906(1)
Å
is
significantly longer than that of other structurally-characterized
dicopper compounds, which have been in the range of 2.743-2.794 Å. 84
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