摘要:
The olefin H2C=C(CNXS(t)Bu) (A) has one donor- and one acceptor substituent in a geminal position. Because such a compound is expected to undergo multiple reactions, A was reacted with some organometallic substrates. The reaction of A with [CpFe(CO)2]2 leads to the sulphur bridged cluster (CP)2 Fe2[mu2,eta2-S=C(CN)CH2(CH3)C=S] (1). With (Mes)Cr(CO)2(THF) A reacts at 0-degrees-C to give the three isomeric compounds (Mes)Cr(CO)2[eta2-H2C=C(CNXS(t)Butyl)] (2), (Mes)Cr(CO)2[S((t)Bu)C(CN)=CH2] 2a and (MeS)Cr(CO)2[NC-C(S(t)Bu)=CH2] (2b). By thermolysis of (C5Me5)2Co2(mu-CO)2 or CpRh(CO)2 with A the complexes (C5Me5)Co(CO)[eta2-S=C(CN)(CH2-(t)Butyl) (3) and CP2Rh2[mu2, eta1, eta2-CH=C(CN)](mu2-S(t)Butyl) (4) were obtained. All newly synthesized compounds have been analysed and characterised by the usual spectroscopic methods. X-ray diffraction studies have been done of compounds 1-4.