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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: MP2=FULL/cc-pVTZ

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 MP2=FULL/cc-pVTZ
 hartrees
Energy at 0K-93.793257
Energy at 298.15K-93.794510
HF Energy-93.430231
Nuclear repulsion energy28.683319
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 MP2=FULL/cc-pVTZ
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' 3490 3313 22.82      
2 A' 3073 2917 238.76      
3 A' 2421 2298 367.20      
4 A' 1011 960 93.58      
5 A' 732 695 317.37      
6 A" 917 871 6.31      

Unscaled Zero Point Vibrational Energy (zpe) 5821.4 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 5526.9 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 MP2=FULL/cc-pVTZ
ABC
14.23090 1.33539 1.22083

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.106 0.627 0.000
N2 0.106 -0.571 0.000
H3 -0.663 1.400 0.000
H4 -0.716 -1.166 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.19761.09091.9728
N21.19762.11581.0153
H31.09092.11582.5672
H41.97281.01532.5672

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 125.925 H3 C1 N2 135.143
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at MP2=FULL/cc-pVTZ
 hartrees
Energy at 0K-93.801222
Energy at 298.15K-93.802540
HF Energy-93.436257
Nuclear repulsion energy28.598225
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 MP2=FULL/cc-pVTZ
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' 3579 3398 62.20      
2 A' 3103 2946 146.78      
3 A' 2410 2288 390.42      
4 A' 1185 1125 6.63      
5 A' 821 779 428.22      
6 A" 962 914 169.19      

Unscaled Zero Point Vibrational Energy (zpe) 6030.0 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 5724.8 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 MP2=FULL/cc-pVTZ
ABC
14.73328 1.32901 1.21905

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.003 0.639 0.000
N2 -0.003 -0.569 0.000
H3 0.892 1.260 0.000
H4 -0.854 -1.115 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.20831.08931.9502
N21.20832.03621.0113
H31.08932.03622.9482
H41.95021.01132.9482

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 122.710 H3 C1 N2 124.730
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability