Safety of Bromopentacarbonylmanganese(I)In 2022 ,《Synthesis and properties of a new nine-membered triphospha-macrocyclic complex via a manganese(I) tricarbonyl template》 appeared in Journal of Molecular Structure. The author of the article were Zhang, Wenjian; Levason, William; Reid, Gillian. The article conveys some information:
Reaction of the primary diphosphine H2P(CH2)2PH2 with [MnBr(CO)5], followed by removal of the bromide by treatment with AgOTf (OTf = CF3SO3) and addition of PAr3 (Ar = o-C6H4F), gives the acyclic precursor complex, fac-[Mn(CO)3{H2P(CH2)2PH2}(PAr3)][OTf], thus positioning the primary phosphine functions adjacent to the o-fluorophenyl substituents. The identity of this species was confirmed by multinuclear NMR (1H, 19F{1H}, 31P{1H} and 55Mn) and IR spectroscopic anal., as well as from a single crystal x-ray anal. Subsequent treatment of this complex with KOtBu (potassium tertiary butoxide) causes a double P-C coupling reaction, with defluorination of two aryl groups, and gives a nine-membered triphosphine macrocyclic complex. Methylation (KOtBu/MeI) of the two remaining secondary phosphine function yields the complex [Mn(CO)3(1)][OTf], which was characterized similarly by multinuclear NMR and IR spectroscopy, and by electrospray mass spectrometry. A single crystal x-ray structure determination confirms the distorted octahedral coordination at Mn(I), with the triphosphine macrocycle occupying three mutually facial coordination sites. As expected, this complex is extremely thermodynamically stable and kinetically inert, being unaffected by prolonged refluxing with either Me3NO or thiophenolate in MeCN. After reading the article, we found that the author used Bromopentacarbonylmanganese(I)(cas: 14516-54-2Safety of Bromopentacarbonylmanganese(I))
Bromopentacarbonylmanganese(I)(cas: 14516-54-2) has many other uses. It is used in the formation of (eta6-arene)tricarbonylmanganese(I) by reacting with arene (arene= hexamethyl benzene, 1,2,4,5-tetramethyl benzene, mesitylene, p-xylene and toluene) in the presence silver salt.Safety of Bromopentacarbonylmanganese(I)
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary