89916-22-3Relevant academic research and scientific papers
DARSTERLLUNG UND EIGENSCHAFTEN VON UND REAKTIONEN MIT METALLHALTIGEN HETEROCYCLEN. XXXV. METALLZENTRIERTE C-C-VERKNUEPFUNG DURCH REDUKTIVE DIMERISIERUNG VON THIOAROYL-GRUPPEN; SYNTHESE, ABFANGREAKTIONEN UND KRISTALLSTRUKTUREN VON DITHIOLEN-KOMPLEXEN
Lindner, Ekkehard,Butz, Ingobert P.,Hoehne, Sigurd,Hiller, Wolfgang,Fawzi, Riad
, p. 99 - 118 (2007/10/02)
The E- and Z-isomeric dithiolene complexes 2(μ-CR1=CR1) (R' = C6H4X-4; X = H, F, Cl, CH3) are formed by the manganese-induced reductive dimerization of the thioaroyl chlorides S=C(R1)Cl via a carbenoid intermediate which is not isolable.The Z-isomers stabilize by coordination of the free electron pairs of the sulphur on the manganese atoms under CO elimination, to give the cis-dithiolene compounds R212-C(μ2-S)=C(μ2-S)>Mn2(CO)6.E-2(μ-CR1=CR1) (R1 = C6H4F-4) and (C6H5)22-C(μ2-S)=C(μ2-S)>Mn2(CO)6 crystallize in the monoclinic space group P21/n and P21/a with Z = 2 and 4, respectively.The E-dithiolene compounds react with activated alkynes R2CCR2 (R2 = CO2C6H11, CO2CH(CH3)2, CO2C2H5) to form the trapping products , containing two thiamanganacyclobutene rings connected by a centre of symmetry.For R2 = C6H4F-4 the compound crystallizes in the triclinic space group P with Z = 1.
