Chemistry of the metal carbonyls. Part LXXII. Carbene complexes of manganese containing thiazolidinylidene and benzothiazolidinylidene ligands

Abstract

N-Methyl-2-chlorobenzothiazolium tetrafluoroborate reacts with the [(Ph₃P)₂N]⁺ salt of the anion [Mn(CO)₅]^– to afford the cationic carbene complex [Mn(CO)₅([graphic omitted])][BF₄]. Treatment of the latter with a mixture of triethylamine, water, and diethyl ether yields the neutral crystalline hydride-complex [MnH(CO)₄([graphic omitted])].The latter is converted into the halogeno-derivatives [MnX(CO)₄([graphic omitted])](X = Cl, Br, or I) on treatment with CCl₄, CH₂Br₂, or MeI, respectively. The iodo-complex reacts with triphenylphosphine or 4-methyl-2,6,7-trioxa-1-phosphabicyclo[2.2.2]octane to give [Mnl(CO)₃L([graphic omitted])]{L = PPh₃ or P[(OCH₂)₃CMe]}, and with thallium hexafluoroacetylacetonate to give [Mn(CO)₃(hfacac)([graphic omitted])]. Some studies on the hydrido-species [MnH(CO)₄([graphic omitted])] are also reported.