[Me2C(η5-C5H4)2Ru2(CO)4]—An Organometallic Thermo-Optical Switch

Burger, Peter

doi:10.1002/1521-3757(20010518)113:10<1971::aid-ange1971>3.0.co;2-p

Cited by 2 publications

(1 citation statement)

References 29 publications

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“…There is only very limited precedence for molecular switches based on organometallic coordination compounds. The majority of reports deals with dinuclear cyclopentadienyl complexes mainly of ruthenium, but also molybdenum and tungsten 24–26. A single study deals with a switchable mononuclear molybdenum complex 27.…”

Section: Resultsmentioning

confidence: 99%

Tunable haptotropic metal migration in fused arenes: towards organometallic switches

Dötz

Jahr

2004

The Chemical Record

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Tricarbonyl chromium complexes of naphthalene derivatives are synthesized by chromium-templated [3 + 2 + 1]-benzannulation and subjected to thermally induced haptotropic rearrangement experiments. Thermodynamic and kinetic parameters for the metal shift demonstrate the influence of the arene substitution pattern. In turn, the chromium template may be tuned as well by phosphorus coligands which allow to accelerate or slow down the isomerization process; this effect quantitatively reflects the steric and electronic properties of the coligand sphere. Proper adjustment of the template allows for a photo-induced reverse migration of the chromium moiety which results in a switchable organometallic device. Experiments with enantiopure arene chromium complexes indicate a stereospecific metal migration. The rearrangement proceeds by an intramolecular mechanism in both directions. Haptotropic isomerization reactions are not limited to bicyclic arenes and can be extended from naphthalenes to phenanthrene or tetra- and pentacyclic heteroarene systems.

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Section: Resultsmentioning

confidence: 99%