Studies in Mössbauer spectroscopy. Part 10. Tin-119 spectra of compounds containing tin–cobalt bonds, and comments on the choice of partial-quadrupole-splitting values

Abstract

Tin-119 Mössbauer data are reported for compounds of the type SnX_{4 –n}[Co(CO)₃(PR₃)]_n, (R = Ph or Buⁿ: X = H. F. Cl, Br, or I : n= l–3). New partial-quadrupole-splitting (p.q.s.) values of –0.64(4) and –0.82(3) mm s^–1 have been obtained for [Co(CO)₄]^– and [Co(CO)₃(PR₃)]^–, and a value has been derived for the first time for the hydride ligand of –1.06 mm s^–1. Apparent differences between various p.q.s. scales are discussed and shown to be illusory.