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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: MP4/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 MP4/cc-pVTZ
 hartrees
Energy at 0K-93.797886
Energy at 298.15K-93.799152
HF Energy-93.431100
Nuclear repulsion energy28.468006
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/cc-pVTZ
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' 3406 3301        
2 A' 2991 2899        
3 A' 2317 2246        
4 A' 1010 979        
5 A' 771 747        
6 A" 909 881        

Unscaled Zero Point Vibrational Energy (zpe) 5701.7 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 5526.1 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/cc-pVTZ
ABC
13.51829 1.32232 1.20450

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.109 0.630 0.000
N2 0.109 -0.579 0.000
H3 -0.666 1.410 0.000
H4 -0.748 -1.135 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.20831.10001.9617
N21.20832.13461.0215
H31.10002.13462.5466
H41.96171.02152.5466

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 123.007 H3 C1 N2 135.197
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at MP4/cc-pVTZ
 hartrees
Energy at 0K-93.806216
Energy at 298.15K-93.807538
HF Energy-93.436598
Nuclear repulsion energy28.390088
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/cc-pVTZ
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' 3510 3402        
2 A' 3025 2932        
3 A' 2332 2260        
4 A' 1186 1150        
5 A' 837 811        
6 A" 959 929        

Unscaled Zero Point Vibrational Energy (zpe) 5923.9 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 5741.5 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/cc-pVTZ
ABC
14.14043 1.31440 1.20261

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.002 0.643 0.000
N2 -0.002 -0.575 0.000
H3 0.902 1.267 0.000
H4 -0.875 -1.097 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.21831.09861.9468
N21.21832.05201.0169
H31.09862.05202.9574
H41.94681.01692.9574

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 120.882 H3 C1 N2 124.579
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability