Transformation of a Platinum Carbonyl into a Platinum Carbene Moiety by Reaction with (η 4 ‐Butadiene)zirconocene | Zendy

Erker Gerhard | Zendy; Menjón Babil | Zendy

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Transformation of a Platinum Carbonyl into a Platinum Carbene Moiety by Reaction with (η 4 ‐Butadiene)zirconocene

Author(s) -

Erker Gerhard,

Menjón Babil

Publication year - 1990

Publication title -

chemische berichte

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.667

H-Index - 136

eISSN - 1099-0682

pISSN - 0009-2940

DOI - 10.1002/cber.19901230618

Subject(s) - chemistry , carbene , platinum , isomerization , medicinal chemistry , toluene , metallacycle , moiety , 1,3 butadiene , stereochemistry , catalysis , x ray crystallography , organic chemistry , diffraction , physics , optics

While (η 4 ‐butadiene)zirconocene and ‐hafnocene do not react with Pt(PPh 3 ) 2 (CO) 2 ( 2 ) in toluene solution at room temperature, cp 2 Zr(η 4 ‐C 4 H 6 ) ( 1a : cp = η 5 ‐C 5 H 5 ; 1b : cp = η 5 ‐C 5 H 4 CH 3 ) reacts with cis ‐Pt(C 6 F 5 ) 2 L(CO) ( 3 : L = CO; 5 : L = P i Pr 3 ) under similar conditions to give the metallacyclic Fischer‐type carbene complexes ( 4 : L = CO; 6 : L = P i Pr 3 ). When L = CO, isomerization takes place by UV irradiation ( cis ‐ 4 ⇌ trans ‐ 4 ) presumably as the result of a dissociative CO scrambling process. This is not observed when L = P i Pr 3 .

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