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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: MP3/6-31G*

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 MP3/6-31G*
 hartrees
Energy at 0K-93.664415
Energy at 298.15K-93.665719
HF Energy-93.391397
Nuclear repulsion energy28.447691
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 MP3/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3422 3212 3.78      
2 A' 3067 2878 164.58      
3 A' 2322 2180 287.70      
4 A' 1083 1017 119.90      
5 A' 831 780 210.16      
6 A" 974 914 7.92      

Unscaled Zero Point Vibrational Energy (zpe) 5849.3 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 5490.2 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 MP3/6-31G*
ABC
13.21078 1.32541 1.20456

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.110 0.628 0.000
N2 0.110 -0.581 0.000
H3 -0.662 1.412 0.000
H4 -0.767 -1.114 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.20911.10061.9501
N21.20912.13761.0261
H31.10062.13762.5281
H41.95011.02612.5281

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 121.281 H3 C1 N2 135.433
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-93.673246
Energy at 298.15K-93.674588
HF Energy-93.397483
Nuclear repulsion energy28.400099
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 MP3/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3544 3327 24.75      
2 A' 3107 2916 126.70      
3 A' 2371 2226 376.57      
4 A' 1241 1165 12.23      
5 A' 883 829 365.08      
6 A" 1005 943 172.13      

Unscaled Zero Point Vibrational Energy (zpe) 6075.2 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 5702.2 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 MP3/6-31G*
ABC
14.01603 1.31764 1.20441

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.001 0.641 0.000
N2 -0.001 -0.576 0.000
H3 0.900 1.271 0.000
H4 -0.885 -1.086 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.21711.09881.9399
N21.21712.05441.0202
H31.09882.05442.9556
H41.93991.02022.9556

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 119.981 H3 C1 N2 124.943
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability