Reactivity of metalmetal bonds VI. Cleavage reactions of (trimethyltin) pentacarbonyl manganese

Abstract

The cleavage reactions of (CH 3) 3SnMn(CO) 5 with chlorine, iodine, hydrogen chloride, hydrogen bromide, hydrogen iodide, iodine menochloride, and trifluoroiodomethane are described, as well as some similar reactions of (C 5H 5) 3PbMn(CO) 5. The results are compared with analogous reactions of other metal−metal bonded organometallic compounds. Boron trifluoride with (CH 3) 3SnMn(CO) 5 gave [(CH 3) 2- SnMn(CO) 5]BF 4, the same compound also being formed from silver tetrafluoroborate and Cl(CH 3) 2SnMn(CO) 5. the analogous hexafluorophosphate and hexafluoroarsenate salts containing the [(CH 3) 2SnMn(CO) 5] + ion could not be obtained from similar reactions. The preparation of CF 3(CH) 2SnMn(CO) 5 and [CH 3) 2- SnMn(CO) 5]BF 3CF 3 are described, but the reaction of sodium tetraphenylborate with Cl(CH 3) 2SnMn(CO) 5 gave C 6H 5(CH 3) 2SnMn(CO) 5 and no the expected tetraphenylborate salt. The infrared spectra of [(CH 3) 2SnMn(CO) 5]BF 4 and the related BF 3CF 3- salt are very similar to those of their trimethyltin analogues, and their probable pentacoordinate structures are discussed.