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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: CCSD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no CS cis 2A'
1 2 yes CS trans 2A'

Conformer 1 (CS cis)

Jump to S1C2
Energy calculated at CCSD/6-31G*
 hartrees
Energy at 0K-93.676935
Energy at 298.15K-93.678248
HF Energy-93.392052
Nuclear repulsion energy27.980799
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCSD/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3317 3132 3.95      
2 A' 3050 2880 53.47      
3 A' 1837 1734 20.37      
4 A' 1084 1024 133.66      
5 A' 903 853 112.05      
6 A" 931 879 6.51      

Unscaled Zero Point Vibrational Energy (zpe) 5560.6 cm-1
Scaled (by 0.9443) Zero Point Vibrational Energy (zpe) 5250.9 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CCSD/6-31G*
ABC
12.60899 1.28314 1.16463

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.112 0.642 0.000
N2 0.112 -0.596 0.000
H3 -0.672 1.413 0.000
H4 -0.791 -1.095 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.23801.09981.9577
N21.23802.15661.0318
H31.09982.15662.5108
H41.95771.03182.5108

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.924 H3 C1 N2 134.510
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at CCSD/6-31G*
 hartrees
Energy at 0K-93.685230
Energy at 298.15K-93.686587
HF Energy-93.397769
Nuclear repulsion energy27.926994
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCSD/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3446 3254 1.70      
2 A' 3099 2927 30.36      
3 A' 1799 1699 23.78      
4 A' 1252 1182 14.50      
5 A' 948 895 219.97      
6 A" 1008 952 109.65      

Unscaled Zero Point Vibrational Energy (zpe) 5776.1 cm-1
Scaled (by 0.9443) Zero Point Vibrational Energy (zpe) 5454.4 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CCSD/6-31G*
ABC
13.19965 1.27624 1.16372

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.001 0.654 0.000
N2 0.001 -0.593 0.000
H3 0.905 1.277 0.000
H4 -0.917 -1.051 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.24711.09751.9369
N21.24712.07651.0259
H31.09752.07652.9560
H41.93691.02592.9560

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 116.550 H3 C1 N2 124.543
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability