67777-49-5Relevant academic research and scientific papers
The SiO/PN Isoelectronic Pair, I Perchlorocyclosiloxanes and Perchlorocyclophosphazenes. Vibrational Spectra and X-Ray Structure Analysis of (Cl2SiO)3 and (Cl2SiO)4
Wannagat, Ulrich,Bogedain, Gabriele,Schervan, Adrian,Marsmann, Heinrich C.,Brauer, David J.,et al.
, p. 931 - 940 (2007/10/02)
Hexachlorocyclotrisiloxane (2) and octachlorocyclotetrasiloxane (4) were prepared by reaction of SiCl4 with O2 at 955 deg C.Their mass spectra are compared with those of the isoelectronic cyclophosphazenes.The vibrational spectra of 2 and 4 are very similar and closely related to that of (PNCl2)3, but clearly different from that of the puckered (PNCl2)4 molecule.The X-ray examination of 2 and 4 reveals planarity of the (SiO)n, n = 3 and 4 ring systems, with d(Si-O) on average 1.619(4) and 1.584(3) Angstroem, respectively.
