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- Title
Towards Structural-Functional Mimics of Acetylene Hydratase: Reversible Activation of Acetylene using a Biomimetic Tungsten Complex.
- Authors
Peschel, Lydia M.; Belaj, Ferdinand; Mösch ‐ Zanetti, Nadia C.
- Abstract
The synthesis and characterization of a biomimetic system that can reversibly bind acetylene (ethyne) is reported. The system has been designed to mimic catalytic intermediates of the tungstoenzyme acetylene hydratase. The thiophenyloxazoline ligand S-Phoz (2-(4′,4′-dimethyloxazolin-2′-yl)thiophenolate) is used to generate a bioinspired donor environment around the W center, facilitating the stabilization of W-acetylene adducts. The featured complexes [W(C2H2)(CO)(S-Phoz)2] ( 2) and [WO(C2H2)(S-Phoz)2] ( 3) are extremely rare from a synthetic and structural point of view as very little is known about W-C2H2 adducts. Upon exposure to visible light, 3 can release C2H2 from its coordination sphere to yield the 14-electron species [WO(S-Phoz)2] ( 4). Under light-exclusion 4 re-activates C2H2 making this the first fully characterized system for the reversible activation of acetylene.
- Subjects
ACETYLENE compounds; HYDRATASES; BIOMIMETIC materials; TUNGSTEN compounds; CHEMICAL species
- Publication
Angewandte Chemie, 2015, Vol 127, Issue 44, p13210
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201505764