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Measurement of wavelength-dependent infrared absorption or emission associated principally with vibrational and rotational transitions.
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This is an authored directed relation from the source endpoint to the target endpoint.
Infrared bands can support a functional-group assignment when mode coupling, hydrogen bonding, phase, concentration, symmetry, overlap, and reference spectra are considered.
The source theory, law, entity, prediction, or structural claim is directly tested, supported, constrained, or established by the target experiment or observation. Experimental support is not final logical proof; the edge detail states exactly what was measured.
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An infrared-active normal mode changes the molecular dipole moment; a permanent dipole is not required for every vibrational transition.
The source supplies a substantive formal ingredient, dynamical sector, law, field content, or mechanism of the target theoretical framework.
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Infrared vibrational spectra depend on changes in dipole moment along molecular normal coordinates.
The target is a member or subtype of the broader source class.
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