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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: CCSD(T)=FULL/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 CCSD(T)=FULL/cc-pVQZ
 hartrees
Energy at 0K-93.888051
Energy at 298.15K-93.889343
HF Energy-93.438831
Nuclear repulsion energy28.274497
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 CCSD(T)=FULL/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' 3370 3254        
2 A' 3024 2920        
3 A' 1856 1792        
4 A' 1031 995        
5 A' 857 828        
6 A" 902 871        

Unscaled Zero Point Vibrational Energy (zpe) 5519.5 cm-1
Scaled (by 0.9656) Zero Point Vibrational Energy (zpe) 5329.6 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 CCSD(T)=FULL/cc-pVQZ
ABC
12.97132 1.30868 1.18874

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.111 0.637 0.000
N2 0.111 -0.587 0.000
H3 -0.675 1.395 0.000
H4 -0.769 -1.105 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.22371.09221.9511
N21.22372.13241.0208
H31.09222.13242.5020
H41.95111.02082.5020

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 120.489 H3 C1 N2 133.997
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at CCSD(T)=FULL/cc-pVQZ
 hartrees
Energy at 0K-93.895811
Energy at 298.15K-93.897158
HF Energy-93.444233
Nuclear repulsion energy28.203713
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 CCSD(T)=FULL/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 3362        
2 A' 3072 2966        
3 A' 1811 1749        
4 A' 1200 1159        
5 A' 911 880        
6 A" 994 959        

Unscaled Zero Point Vibrational Energy (zpe) 5734.6 cm-1
Scaled (by 0.9656) Zero Point Vibrational Energy (zpe) 5537.3 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 CCSD(T)=FULL/cc-pVQZ
ABC
13.75983 1.29765 1.18581

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.648 0.000
N2 0.000 -0.585 0.000
H3 0.893 1.273 0.000
H4 -0.897 -1.061 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.23321.09001.9304
N21.23322.06181.0157
H31.09002.06182.9418
H41.93041.01572.9418

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 117.950 H3 C1 N2 125.002
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability