- case prefix: ltcs
- case ID: 4
ElecStateLabel
XML Element
ltcs:ElecStateLabel
Description
ElecStateLabel is a label identifying the electronic state: X, A, a, B, etc..
Attributes
None
Restrictions
string
v1
XML Element
ltcs:v1
Description
v1 is the vibrational quantum number associated with the ν1 normal mode.
Attributes
None
Restrictions
non-negative integer
v2
XML Element
ltcs:v2
Description
v2 is the vibrational quantum number associated with the doubly-degenerate ν2 normal mode.
Attributes
None
Restrictions
non-negative integer
l2
XML Element
ltcs:l2
Description
l2 is the vibrational angular momentum quantum number associated with the degenerate bending vibration, ν2; positive and negative values distinguish l&endash;type doubling components.
Attributes
None
Restrictions
integer; |l2| = v2, v2-2, ..., 1 or 0
v3
XML Element
ltcs:v3
Description
v3 is the vibrational quantum number associated with the ν3 normal mode.
Attributes
None
Restrictions
non-negative integer
J
XML Element
ltcs:J
Description
J is the quantum number associated with the total angular momentum excluding nuclear spin, J.
Attributes
None
Restrictions
non-negative integer
F1
XML Element
ltcs:F1
Description
F1 is the intermediate angular momentum quantum number associated with the coupling of the rotational angular momentum and nuclear spin of nucleus 1 where two or more such couplings are resolved: F1 = J + I1; F1 is often not a good quantum number.
Attributes
nuclearSpinRef: a label identifying the nuclear spin coupled to J to form the intermediate angular momentum
Restrictions
non-negative integer or half-integer; |J - I1| ≤ F1 ≤ J + I1
F2
XML Element
ltcs:F2
Description
F2 is the intermediate angular momentum quantum number associated with the coupling of the rotational angular momentum and nuclear spin of nucleus 2 where three such couplings are resolved: F2 = F1 + I2; F2 is often not a good quantum number.
Attributes
nuclearSpinRef: a label identifying the nuclear spin coupled to F1 to form the intermediate angular momentum
Restrictions
non-negative integer or half-integer; |F1 - I2| ≤ F2 ≤ F1 + I2
F
XML Element
ltcs:F
Description
F is the quantum number associated with the total angular momentum including nuclear spin: F = J + I1 if only one hyperfine coupling is resolved, F = F1 + I2 if two couplings are resolved, or F = F2 + I3 if all three couplings are resolved.
Attributes
nuclearSpinRef: a label identifying the nuclear spin coupled to J, F1, or F2 to form the total angular momentum
Restrictions
non-negative integer or half-integer; |F2 - I3| ≤ F ≤ F2 + I3
r
XML Element
ltcs:r
Description
r is a named, positive integer label identifying the state if no other good quantum numbers or symmetries are known.
Attributes
name: a string identifying this ranking index
Restrictions
positive integer
parity
XML Element
ltcs:parity
Description
parity is the total parity: the parity of the total molecular wavefunction (excluding nuclear spin) with respect to inversion through the molecular centre of mass of all particles' coordinates in the laboratory coordinate system, the E* operation.
Attributes
None
Restrictions
'+' or '-'
kronigParity
XML Element
ltcs:kronigParity
Description
kronigParity is the 'rotationless' parity: the parity of the total molecular wavefunction excluding nuclear spin and rotation with respect to inversion through the molecular centre of mass of all particles' coordinates in the laboratory coordinate system..
Attributes
None
Restrictions
'e' or 'f'
asSym
XML Element
ltcs:asSym
Description
asSym is (for linear molecules with a centre of inversion) the symmetry of the rovibronic wavefunction: 'a' or 's' such that the total wavefunction including nuclear spin is symmetric or antisymmetric with respect to permutation of the identical nuclei (P12), according to whether they are bosons or fermions respectively.
Attributes
None
Restrictions
's' or 'a'