return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for HCNH (methyleneazane)

using model chemistry: CID/6-31G

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 CID/6-31G
 hartrees
Energy at 0K-93.525646
Energy at 298.15K-93.526952
HF Energy-93.345424
Nuclear repulsion energy28.291461
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 CID/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' 3472 3247 5.75      
2 A' 3017 2822 137.43      
3 A' 2205 2062 235.91      
4 A' 1061 992 77.00      
5 A' 806 754 340.86      
6 A" 1031 964 22.10      

Unscaled Zero Point Vibrational Energy (zpe) 5796.1 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 5420.6 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 CID/6-31G
ABC
15.15146 1.28204 1.18202

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.103 0.638 0.000
N2 0.103 -0.576 0.000
H3 -0.658 1.436 0.000
H4 -0.680 -1.233 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.21451.10242.0281
N21.21452.15141.0215
H31.10242.15142.6689
H42.02811.02152.6689

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 129.991 H3 C1 N2 136.363
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at CID/6-31G
 hartrees
Energy at 0K-93.533798
Energy at 298.15K-93.535156
HF Energy-93.352064
Nuclear repulsion energy28.252307
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 CID/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' 3580 3348 24.72      
2 A' 3087 2887 98.48      
3 A' 2240 2095 352.36      
4 A' 1231 1152 21.58      
5 A' 900 842 427.90      
6 A" 1067 998 206.38      

Unscaled Zero Point Vibrational Energy (zpe) 6052.6 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 5660.4 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 CID/6-31G
ABC
15.43670 1.28344 1.18492

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.004 0.648 0.000
N2 -0.004 -0.575 0.000
H3 0.881 1.300 0.000
H4 -0.833 -1.164 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.22361.09871.9933
N21.22362.07311.0172
H31.09872.07313.0014
H41.99331.01723.0014

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 125.386 H3 C1 N2 126.345
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability