Stereochemistry and bonding in bis[pentacarbonylmanganese]mercury, Hg[Mn(CO)5]2. Linear, mercury-bridged derivative of dimanganese decacarbonyl with an eclipsed conformation

A new modification of Hg[Mn(CO)5]2

“…As Guinier powder patterns of our sample proved not to be isotypic with the previously reported triclinic structure of Hg [Mn(CO)5]2 (Clegg & Wheatley, 1971;Katcher & Simon, 1972), we undertook a single-crystal structure determination. The new modification of Hg[Mn(CO)5]2 has a monoclinic structure with site symmetry 1 as is true for the triclinic structure.…”

He(I) and He(II) Photoelectron Spectra of M[Co(CO)4]2 and M[Mn(CO)5]2 Complexes (M = Zn, Cd, and Hg)

“…Clearly, this is due to interactions with other orbitals. It is tempting to explain this by a strong interaction of the e(d. [27]. However, an alternative explanation involving a strong mixing of the b2 orbital with a corresponding combination of CO TI* orbitals should not be excluded.…”

Bonding in M(NHBMe)2 and M[Mn(CO)5]2 complexes (M=Zn, Cd, Hg; NHBMe=(HCNMe)2B): divalent group 12 metals with zero oxidation state

“…They were characterized by IR and/or Raman spectroscopic studies which suggest that these complexes possess highly symmetric D 4h or D 4d structures. However, an X-ray structure is only available for Hg[Mn(CO) 5 ] 2 showing the molecule with an approximate D 4h symmetry [33,34] Since Mn(CO) 5 − is an 18-electron complex, these complexes are generally described with interaction between M 2+ and two Mn(CO) 5 − ligands, giving the formal oxidation state + 2 for M [30]. But an in-depth bonding analysis for these complexes is missing which leads to the question about the correct oxidation state of the metal center in M(NHB Dipp ) 2…”