13637-65-5Relevant articles and documents
Preparations, Properties, and Vibrational Spectra of some (Dimethylamino)halogenosilanes
Anderson, David G.,Armstrong, Janet,Cradock, Stephen
, p. 3029 - 3034 (1987)
We have prepared and characterised the new compounds SiH2Cl(NMe2), SiH2Br(NMe2), SiH2I(NMe2), and SiHCl2(NMe2).The vibrational spectra of the three (amino)monohalogenosilanes show dramatic changes on solidification, but those of the (amino)dichlorosilane
The ground state energy levels and molecular structure of jet-cooled HGeCl and DGeCl from single vibronic level emission spectroscopy
Tackett, Brandon S.,Clouthier, Dennis J.,Pacheco, Kezia L.,Schick, G. Alan
, p. 1 - 6 (2008/10/09)
Single vibronic level dispersed fluorescence spectra of jet-cooled HGeCland DGeCl have been recorded by laser excitation of selected bands of t he A A??1 - X A′1 electronic transition. Twenty-six ground state vibrational levels of HGeCl and 42 of DGeCl were measured, assigned,and fitted to standard anharmonicity expressions, which allowed all the harmonic frequencies to be determined for both isotopomers. A normal co ordinate least squares analysis obtained by fitting the harmonic frequencies yielded reliable values for five of the six force constants. The ground state effective rotational constants and force field data were combined to calculate average (rz) and approximate equilibrium (rez) structures, with rez (GeH) =1.586 (1) ?, rez (GeCl) =2.171 (2) ?, and the bond angle fixed at our CCSD(T)/aug-cc-pVTZ ab initio value of 93.9°. Comparisons show that the derived bond lengths are consistent with those of the appropriate diatomic molecules in their ground electronic states and the bond angle is similar to that of germylene (Ge H2). A Franck-Condon simulation of the vibrational intensities in the 000 band emission spectrum of HGeCl using ab initio force field data shows good agreement with experiment, lending credence to the vibrational analysis of the observed spectra.
