《Metal-Templated, Tight Loop Conformation of a Cys-X-Cys Biomimetic Assembles a Dimanganese Complex》 was written by Le, Trung; Nguyen, Hao; Perez, Lisa M.; Darensbourg, Donald J.; Darensbourg, Marcetta Y.. Computed Properties of C5BrMnO5 And the article was included in Angewandte Chemie, International Edition in 2020. The article conveys some information:
With the goal of generating anionic analogs to MN2S2·Mn(CO)3Br the authors introduced metallodithiolate ligands, MN2S22- prepared from the Cys-X-Cys biomimetic, ema4- ligand (ema = N,N’-ethylenebis(mercaptoacetamide); M = NiII, [VIV O]2+ and FeIII) to Mn(CO)5Br. An unexpected, remarkably stable dimanganese product, (H2N2(CH2C:O(μ-S))2)[Mn(CO)3]2 resulted from loss of M originally residing in the N2S24- pocket, replaced by protonation at the amido nitrogens, generating H2ema2-. Accordingly, the ema ligand has switched its coordination mode from an N2S24- cavity holding a single metal, to a binucleating H2ema2- with bridging sulfurs and carboxamide oxygens within Mn-μ-S-CH2-C-O, 5-membered rings. In situ metal-templating by zinc ions gives quant. yields of the Mn2 product. By computational studies the authors compared the conformations of “”linear”” ema4- to ema4- frozen in the “”tight-loop”” around single metals, and to the “”looser”” fold possible for H2ema2- that is the optimal arrangement for binucleation. XRD mol. structures show extensive H-bonding at the amido-nitrogen protons in the solid state. In addition to this study using Bromopentacarbonylmanganese(I), there are many other studies that have used Bromopentacarbonylmanganese(I)(cas: 14516-54-2Computed Properties of C5BrMnO5) was used in this study.
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.Computed Properties of C5BrMnO5
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary