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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: MP2/cc-pVQZ

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/cc-pVQZ
 hartrees
Energy at 0K-93.795144
Energy at 298.15K-93.796388
HF Energy-93.437298
Nuclear repulsion energy28.656080
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/cc-pVQZ
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' 3481 3301 27.76      
2 A' 3046 2889 251.54      
3 A' 2414 2289 392.10      
4 A' 996 945 95.52      
5 A' 728 690 315.41      
6 A" 902 855 6.38      

Unscaled Zero Point Vibrational Energy (zpe) 5783.1 cm-1
Scaled (by 0.9484) Zero Point Vibrational Energy (zpe) 5484.7 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/cc-pVQZ
ABC
14.11529 1.33415 1.21894

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.107 0.627 0.000
N2 0.107 -0.571 0.000
H3 -0.671 1.400 0.000
H4 -0.714 -1.170 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.19791.09621.9758
N21.19792.11841.0164
H31.09622.11842.5701
H41.97581.01642.5701

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 126.127 H3 C1 N2 134.813
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at MP2/cc-pVQZ
 hartrees
Energy at 0K-93.803407
Energy at 298.15K-93.804719
HF Energy-93.443308
Nuclear repulsion energy28.573062
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/cc-pVQZ
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' 3570 3386 69.18      
2 A' 3082 2923 148.88      
3 A' 2402 2278 409.24      
4 A' 1175 1115 8.61      
5 A' 819 777 428.63      
6 A" 948 899 167.42      

Unscaled Zero Point Vibrational Energy (zpe) 5998.4 cm-1
Scaled (by 0.9484) Zero Point Vibrational Energy (zpe) 5688.8 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/cc-pVQZ
ABC
14.69984 1.32698 1.21711

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.003 0.640 0.000
N2 -0.003 -0.569 0.000
H3 0.897 1.261 0.000
H4 -0.852 -1.121 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.20841.09421.9545
N21.20842.03931.0124
H31.09422.03932.9552
H41.95451.01242.9552

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 123.064 H3 C1 N2 124.585
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability