14452-66-5Relevant academic research and scientific papers
Phosphine Chemistry om Mo(110) and Oxidized Mo(110)
Zhang, X.,Linsebigler, A.,Heiz, U.,Yates, J. T.
, p. 5074 - 5079 (2007/10/02)
The adsorption and desorption of phosphine and the oxidation of phosphorus on Mo(110) and oxidized Mo(110) have been studied by using Auger electron spectroscopy (AES), temperature-programmed desorption (TPD) and low-energy electron diffraction (LEED).Both molecular desorption and dissociative processes were observed on Mo(110), leaving adsorbed P(a) species in a c(4x1) overlayer structure.The P(a) species do not undergo diffusion into the bulk below 1000 K.On the oxidized Mo(110) surface, the phosphine adsorption and dissociation process was inhibited significantly.Phosphorus on the Mo(110) surface could be oxidized to produce PO(g) and PO2(g) species near 900 K, as detected by line-of-sight mass spectrometry; neither P2O3(g) nor P2O5(g) was observed.
Matrix infrared spectra of the products from photochemical reactions of P4 with O3 and decomposition of P4O6
Mielke, Zofia,Andrews, Lester
, p. 2773 - 2779 (2008/10/08)
The P4/O3 matrix system has been reinvestigated by using dilute P4 and a wide range of photolysis wavelengths. With red photolysis the major product is terminal P4O; with ultraviolet photolysis absorptions for oxo-bridged tetrahedral P4O and cyclic planar P4O plus a series of oxo-bridged absorptions leading to P4O6 and P4O7 dominate. Vacuum ultraviolet photolysis and glow discharge of P4O6 produced an absorption for P4O7 and three absorptions common to the P4/O3 photolysis system, which are assigned to oxo-bridged P4O5, P4O4, and P4O3.
Matrix Reactions of Oxygen Atoms with P4. Infrared Spectra of P4O, P2O, PO and PO2
Andrews, Lester,Withnall, Robert
, p. 5605 - 5610 (2007/10/02)
Oxygen atoms (16O and 18O) from ozone photolysis and discharge of oxygen molecules were reacted with P4 molecules and the products were trapped in solid argon at 12 K.The major product P4O exhibited a strong terminal P=O stretching mode at 1241 cm-1, a P-P=O deformation mode at 243 cm-1, and four P-P stretching modes near P4 values, all of which characterize a C3v species.Two new molecular species probably arise from energized P4O before relaxation by the matrix: The first absorbed at 1197 cm-1, photolyzed with red light, and is probably P2O.The second absorbed at 856 and 553 cm-1, increased with short-wavelength radiation, and is most likely due to the C2v bridge-bonded P4O structural isomer.Higher discharge power gave O atoms and vacuum ultraviolet radiation; these conditions favored the bridge-bonded P4O species and the simple PO and PO2, which were observed at 1218 and 1319 cm-1, respectively.The matrix efficiently quenched the large exothermicity (130 +/- 10 kcal/mol) for the P4 + O reaction and allowed the lowest oxide of phosphorous, P4O, to be trapped for the first time as a molecular species.
