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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: MP4=FULL/3-21G

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 MP4=FULL/3-21G
 hartrees
Energy at 0K-93.067241
Energy at 298.15K-93.068527
HF Energy-92.860907
Nuclear repulsion energy28.334540
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 MP4=FULL/3-21G
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' 3310 3240        
2 A' 2870 2810        
3 A' 2414 2363        
4 A' 1026 1004        
5 A' 775 758        
6 A" 1000 979        

Unscaled Zero Point Vibrational Energy (zpe) 5697.4 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 5576.6 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 MP4=FULL/3-21G
ABC
15.61220 1.28297 1.18555

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.101 0.637 0.000
N2 0.101 -0.570 0.000
H3 -0.667 1.439 0.000
H4 -0.651 -1.272 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.20711.11082.0521
N21.20712.15101.0290
H31.11082.15102.7112
H42.05211.02902.7112

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 133.032 H3 C1 N2 136.207
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at MP4=FULL/3-21G
 hartrees
Energy at 0K-93.074141
Energy at 298.15K-93.075487
HF Energy-92.867113
Nuclear repulsion energy28.257060
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 MP4=FULL/3-21G
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' 3425 3352        
2 A' 2924 2862        
3 A' 2415 2364        
4 A' 1218 1192        
5 A' 866 848        
6 A" 1039 1017        

Unscaled Zero Point Vibrational Energy (zpe) 5943.1 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 5817.1 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 MP4=FULL/3-21G
ABC
15.04588 1.29002 1.18815

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.005 0.649 0.000
N2 0.005 -0.571 0.000
H3 -0.902 1.282 0.000
H4 0.834 -1.174 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.21991.10722.0026
N21.21992.06411.0250
H31.10722.06413.0087
H42.00261.02503.0087

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 126.042 H3 C1 N2 124.930
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability