A C¬D (carbon–deuterium) bond is electronically much like a C¬H bond, and it has a similar stiffness, measured bythe spring constant, k. The deuterium atom has twice the mass (m) of a hydrogen atom, however.(a) The infrared absorption frequency is approximately proportional to 1k>m, when one of the bonded atoms is muchheavier than the other, and m is the lighter of the two atoms (H or D in this case). Use this relationship to calculate theIR absorption frequency of a typical C¬D bond. Use 3000 cm-1as a typical C¬H absorption frequency.(b) A chemist dissolves a sample in deuterochloroform (CDCl3) and then decides to take the IR spectrum and simplyevaporates most of the CDCl3. What functional group will appear to be present in this IR spectrum as a result of theCDCl3 impurity?
Atomic Structure
The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.
Shape of the D Orbital
Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.
A C¬D (carbon–deuterium) bond is electronically much like a C¬H bond, and it has a similar stiffness, measured by
the spring constant, k. The deuterium atom has twice the mass (m) of a hydrogen atom, however.
(a) The infrared absorption frequency is approximately proportional to 1k>m, when one of the bonded atoms is much
heavier than the other, and m is the lighter of the two atoms (H or D in this case). Use this relationship to calculate the
IR absorption frequency of a typical C¬D bond. Use 3000 cm-1
as a typical C¬H absorption frequency.
(b) A chemist dissolves a sample in deuterochloroform (CDCl3) and then decides to take the IR spectrum and simply
evaporates most of the CDCl3. What functional group will appear to be present in this IR spectrum as a result of the
CDCl3 impurity?
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