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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: G3

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 G3
 hartrees
Energy at 0K-93.895774
Energy at 298.15K-93.891872
HF Energy-93.392963
Nuclear repulsion energy28.231203
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 HF/6-31G*
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' 3583 3376 2.51      
2 A' 3249 3061 33.03      
3 A' 1666 1570 0.67      
4 A' 1266 1193 116.70      
5 A' 1013 954 45.48      
6 A" 1063 1002 8.56      

Unscaled Zero Point Vibrational Energy (zpe) 5920.1 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 5577.9 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/6-31G*
ABC
13.98998 1.32115 1.20715

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.107 0.629 0.000
N2 0.107 -0.574 0.000
H3 -0.667 1.414 0.000
H4 -0.724 -1.172 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.20291.10241.9840
N21.20292.13341.0244
H31.10242.13342.5873
H41.98401.02442.5873

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 116.471 H3 C1 N2 134.238
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at G3
 hartrees
Energy at 0K-93.902855
Energy at 298.15K-93.904285
HF Energy-93.398748
Nuclear repulsion energy28.277958
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 HF/6-31G*
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' 3678 3465 3.75      
2 A' 3294 3104 20.15      
3 A' 1704 1606 10.87      
4 A' 1332 1255 19.30      
5 A' 1033 973 169.61      
6 A" 1100 1036 98.79      

Unscaled Zero Point Vibrational Energy (zpe) 6070.4 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 5719.5 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 MP2=FULL/6-31G*
ABC
14.29510 1.31884 1.20745

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.004 0.643 0.000
N2 -0.004 -0.570 0.000
H3 0.910 1.255 0.000
H4 -0.862 -1.122 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.21381.09971.9623
N21.21382.04171.0197
H31.09972.04172.9645
H41.96231.01972.9645

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 114.530 H3 C1 N2 126.295
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability