We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Reaction of Pentelidene Complexes with Diazoalkanes: Stabilization of Parent 2,3-Dipnictabutadienes.
- Authors
Seidl, Michael; Stubenhofer, Markus; Timoshkin, Alexey Y.; Scheer, Manfred
- Abstract
The reaction of the phosphinidene complex [Cp*P{W(CO)5}2] ( 1 a) with diphenyldiazomethane leads to [{W(CO)5}Cp*P=NN{W(CO)5}=CPh2] ( 2). Compound 2 is a rare example of a phosphadiazadiene ligand (R-P=N−N=CR′R′′) complex. At temperatures above 0 °C, 2 decomposes into the complex [{W(CO)5}PCp*{N(H)N=CPh2)2] ( 3), among other species. The reaction of the pentelidene complexes [Cp*E{W(CO)5}2] (E=P, As) with diazomethane (CH2NN) proceeds differently. For the arsinidene complex ( 1 b), only the arsaalkene complex 4 b [{W(CO)5}2{η1:2-(Cp*)As=CH2}] is formed. The reaction with the phosphinidene complex ( 1 a) results in three products, the two phosphaalkene complexes [{W(CO)5}2{η1:2-(R)P=CH2}] ( 4 a: R=Cp*, 5: R=H) and the triazaphosphole derivative [{W(CO)5}P(Cp*)-CH2-N{W(CO)5}=N-N(N=CH2)] ( 6 a). The phosphaalkene complex ( 4 a) and the arsaalkene complex ( 4 b) are not stable at room temperature and decompose to the complexes [{W(CO)5}4(CH2=E−E=CH2)] ( 7 a: E=P, 7 b: E=As), which are the first examples of complexes with parent 2,3-diphospha-1,3-butadiene and 2,3-diarsa-1,3-butadiene ligands.
- Subjects
DIAZOALKANES; PHOSPHINIDENES; CHEMICAL reactions; LIGANDS (Chemistry); ARSANYLIDENES; BUTADIENE; PYROLYSIS
- Publication
Angewandte Chemie International Edition, 2016, Vol 55, Issue 45, p14037
- ISSN
1433-7851
- Publication type
Article
- DOI
10.1002/anie.201607793