b. (30 pts) White elemental phosphorus consists of tetrahedral P4 molecules and is an important source of phosphorus for
Posted: Wed May 18, 2022 10:08 am
b. (30 pts) White elemental phosphorus consists of tetrahedral
P4 molecules and is an important
source of phosphorus for synthesis. In contrast, tetrahedral As4
(yellow arsenic) is unstable, and
decomposes to a grey As allotrope with a sheet structure. However,
AsP3, previously only
observed at high temperature in the gas phase, has been isolated at
ambient temperature as a
white solid, where an As atom replaces one vertex of the
tetrahedron. The Raman spectrum of
AsP3, shown next, exhibits four absorptions. Is this
consistent with the proposed structure?
Explain. Could a pure sample of P4 be distinguished from pure AsP3
simple on the basis of the
number of Raman absorptions? Explain.
P4 molecules and is an important
source of phosphorus for synthesis. In contrast, tetrahedral As4
(yellow arsenic) is unstable, and
decomposes to a grey As allotrope with a sheet structure. However,
AsP3, previously only
observed at high temperature in the gas phase, has been isolated at
ambient temperature as a
white solid, where an As atom replaces one vertex of the
tetrahedron. The Raman spectrum of
AsP3, shown next, exhibits four absorptions. Is this
consistent with the proposed structure?
Explain. Could a pure sample of P4 be distinguished from pure AsP3
simple on the basis of the
number of Raman absorptions? Explain.