✍ Scribed by Sidney F. A. Kettle; Eliano Diana; Enrico Boccaleri; Pier Luigi Stanghellini
No coin nor oath required. For personal study only.
The recently suggested spherical (SHM) and tensor (THM) appropriate as a first approximation. The distinction between the two appears to be associated with a disruption of the harmonic models are applied to the interpretation of the terminal ν(CO) spectra of twenty six tetrahedral transition band structure of the cluster either by the introduction of heterometal atoms or by the presence of a group -acetate metal clusters containing between four and twelve terminal carbonyl groups. Although the SHM is perhaps the more ester, halide or hydride -presumably acting as an electronegative substituent. generally relevant, there are species for which the THM is illustrated in Figure , where we give the expected qualitat-
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## Abstract The ^13^C NMR spectra of thirteen methoxycarbonylpyridine derivatives and two pyridine lactones are interpreted. The substituent increments for the methoxycarbonyl group in 2‐, 3‐ and 4‐substituted pyridines are reported.
The saturation spectra of the 2n 2 and the 3n 2 -n 2 bands of carbonyl sulfide have been studied using a CO 2 laser sideband spectrometer. The frequency of 20 absorption lines has been determined with an accuracy of 20 kHz. These data have been included in a global rovibrational analysis including a
## Abstract The fragmentation patterns of butyltin compounds (mono‐, di‐, and tributyltin) in an electron impact ion source were studied using an isotope pattern reconstruction algorithm with emphasis on isotope ratio measurements from molecular clusters. For this purpose, standards of natural tin