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Schwefel(IV)1‐Verbindungen als Liganden, 19. Kationische Ruthenium‐Sulfen‐Komplexe: Synthese und Reaktionen. Kristallstrukturanalyse von [Cp*(Me 3 P) 2 Ru(CH 2 SO 2 )]PF 6
Author(s) -
Schenk Wolfdieter A.,
Urban Peter,
Dombrowski Eberhard
Publication year - 1993
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.19931260319
Subject(s) - chemistry , ruthenium , medicinal chemistry , cationic polymerization , methylene , crystal structure , electrophile , stereochemistry , regioselectivity , catalysis , polymer chemistry , organic chemistry
Sulfur(IV) Compounds as Ligands, 19 [1] . – Cationic Ruthenium‐Sulfene Complexes: Synthesis and Reactions. Crystal Structure Analysis of [Cp*(Me 3 P) 2 Ru(CH 2 SO 2 )]PF 6 Methylene addition to coordinated sulfur dioxide yields the novel η 2 ( C, S ) sulfene complexes [Cp(dppm)Ru(CHRSO 2 )]PF 6 (RH: 3 , Me: 4 ) and [Cp*(Me 3 P) 2 Ru(CH 2 SO 2 )]PF 6 ( 5 ). An X‐ray structure determination of 5 reveals a relatively short C – S bond (167.5 pm). The sulfene complexes are powerful carbon electrophiles as shown by the rapid addition of halides, pseudohalides, amines, including „nonnucleophiles” such as ethyldiisopropylamine and DBU, and phosphanes to 3 . The regioselectivity of the reaction of 3 with enamines is opposite to that of free sulfene, i.e. coordination of the sulfene to ruthenium effects umpolung.