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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: CCD/6-31G(2df,p)

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 CCD/6-31G(2df,p)
 hartrees
Energy at 0K-93.734177
Energy at 298.15K-93.735470
HF Energy-93.405397
Nuclear repulsion energy28.520546
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 CCD/6-31G(2df,p)
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' 3471 3288 9.71      
2 A' 3074 2912 133.25      
3 A' 2299 2178 267.89      
4 A' 1059 1003 118.46      
5 A' 804 761 193.05      
6 A" 958 907 5.30      

Unscaled Zero Point Vibrational Energy (zpe) 5832.4 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 5524.4 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 CCD/6-31G(2df,p)
ABC
13.28801 1.33168 1.21038

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.110 0.627 0.000
N2 0.110 -0.580 0.000
H3 -0.660 1.408 0.000
H4 -0.765 -1.107 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.20691.09731.9413
N21.20692.13251.0207
H31.09732.13252.5171
H41.94131.02072.5171

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 121.040 H3 C1 N2 135.433
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at CCD/6-31G(2df,p)
 hartrees
Energy at 0K-93.742197
Energy at 298.15K-93.743534
HF Energy-93.410932
Nuclear repulsion energy28.464206
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 CCD/6-31G(2df,p)
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' 3577 3388 32.23      
2 A' 3106 2942 102.59      
3 A' 2320 2197 316.88      
4 A' 1215 1151 7.75      
5 A' 863 818 340.20      
6 A" 994 942 139.20      

Unscaled Zero Point Vibrational Energy (zpe) 6037.1 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 5718.4 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 CCD/6-31G(2df,p)
ABC
14.16767 1.32196 1.20914

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.001 0.639 0.000
N2 -0.001 -0.575 0.000
H3 0.894 1.273 0.000
H4 -0.881 -1.082 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.21481.09671.9335
N21.21482.05361.0154
H31.09672.05362.9492
H41.93351.01542.9492

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 119.951 H3 C1 N2 125.278
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability