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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: MP2/6-311G*

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 MP2/6-311G*
 hartrees
Energy at 0K-93.687245
Energy at 298.15K-93.688494
HF Energy-93.411524
Nuclear repulsion energy28.567329
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 MP2/6-311G*
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' 3468 3296 12.44      
2 A' 3026 2876 342.30      
3 A' 2456 2334 383.77      
4 A' 1015 965 95.86      
5 A' 727 691 366.52      
6 A" 923 877 11.00      

Unscaled Zero Point Vibrational Energy (zpe) 5807.5 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 5518.8 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 MP2/6-311G*
ABC
14.00490 1.32629 1.21156

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.110 0.617 0.000
N2 0.110 -0.570 0.000
H3 -0.669 1.398 0.000
H4 -0.755 -1.111 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.18651.10301.9318
N21.18652.11601.0201
H31.10302.11602.5098
H41.93181.02012.5098

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 122.023 H3 C1 N2 135.072
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-93.697033
Energy at 298.15K-93.698354
HF Energy-93.418276
Nuclear repulsion energy28.479161
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 MP2/6-311G*
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' 3585 3407 54.40      
2 A' 3070 2917 226.39      
3 A' 2486 2362 455.87      
4 A' 1223 1162 11.65      
5 A' 828 787 499.59      
6 A" 968 919 216.84      

Unscaled Zero Point Vibrational Energy (zpe) 6079.7 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 5777.6 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 MP2/6-311G*
ABC
14.35617 1.32155 1.21015

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.003 0.630 0.000
N2 -0.003 -0.563 0.000
H3 0.914 1.238 0.000
H4 -0.877 -1.080 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.19271.09951.9207
N21.19272.02001.0158
H31.09952.02002.9288
H41.92071.01582.9288

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 120.633 H3 C1 N2 123.540
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability