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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: CCD/3-21G*

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 CCD/3-21G*
 hartrees
Energy at 0K-93.054490
Energy at 298.15K-93.055791
HF Energy-92.861713
Nuclear repulsion energy28.383857
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 CCD/3-21G*
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' 3309 3165 2.43      
2 A' 2943 2815 198.38      
3 A' 2341 2239 207.04      
4 A' 1037 991 64.96      
5 A' 807 772 377.24      
6 A" 1023 979 16.69      

Unscaled Zero Point Vibrational Energy (zpe) 5729.3 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 5480.1 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 CCD/3-21G*
ABC
15.27281 1.29172 1.19099

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.102 0.634 0.000
N2 0.102 -0.572 0.000
H3 -0.653 1.439 0.000
H4 -0.679 -1.242 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.20611.10442.0326
N21.20612.14861.0293
H31.10442.14862.6818
H42.03261.02932.6818

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 130.638 H3 C1 N2 136.805
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at CCD/3-21G*
 hartrees
Energy at 0K-93.061353
Energy at 298.15K-93.062705
HF Energy-92.867561
Nuclear repulsion energy28.308123
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 CCD/3-21G*
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' 3428 3278 17.84      
2 A' 2988 2858 136.51      
3 A' 2348 2246 281.78      
4 A' 1224 1171 24.26      
5 A' 890 851 436.51      
6 A" 1048 1002 186.78      

Unscaled Zero Point Vibrational Energy (zpe) 5962.4 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 5703.0 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 CCD/3-21G*
ABC
15.10527 1.29464 1.19244

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.004 0.646 0.000
N2 -0.004 -0.572 0.000
H3 0.890 1.291 0.000
H4 -0.844 -1.159 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.21791.10211.9905
N21.21792.06671.0248
H31.10212.06673.0014
H41.99051.02483.0014

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 124.905 H3 C1 N2 125.876
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability