54834-89-8Relevant articles and documents
Quadrupole-Dipole Effects in Solid-State Phosphorus-315 CP-MAS NMR Spectra of Tertiary Phosphine Substituted Alkyl- And Acyltetracarbonylmanganese(I) Complexes
Christendat, Dharamdat,Markwell, Ross D.,Gilson, Denis F. R.,Butler, Ian S.,Cotton, John D.
, p. 230 - 235 (2008/10/09)
A series of tertiary phosphine substituted alkyl- and acyltetracarbonylmanganese(I) complexes has been studied by cross-polarization and magic-angle-spinning (CP-MAS), 31P solid-state NMR spectroscopy. All the spectra show an asymmetric sextet due to one-bond 31P-55Mn spin-spin coupling and second-order quadrupolar effects, transmitted by dipolar coupling between the 55Mn and 31P nuclei, which are not suppressed by magic-angle spinning. The chemical shift tensors, spin-spin coupling constants, dipolar coupling constants, quadrupolar coupling constants, and anisotropies in the spin-spin coupling have been determined. The shielding anisotropies of the alkyl complexes are larger than are those for the acyl complexes. The solid-state 1JMn-p spin-spin coupling constants range from 196 to 204 Hz for the alkyl compounds and from 216 to 233 Hz for the acyl complexes. The 1JMn-p values obtained from the solution 55Mn NMR spectra for the alkyl complexes are ～50 Hz larger than are those obtained from the 31P solid-state NMR studies. The nuclear quadrupole coupling constants range from 23 to 25 MHz.
Photochemistry of (η1-C5Cl5)Mn(CO)5 and (η1-C6H5CH2)Mn(CO)5: Competitive formation of 16- and 17e intermediates
Young,Wrighton
, p. 157 - 166 (2007/10/02)
Irradiation of RMn(CO)5 (R = η1-C5Cl5, η1-C6H5CH2) in alkane glasses at 95 K leads to CO loss as the only detectable photoprocess: the ring-slipped (η3-Csu
