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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: QCISD(T)/cc-pVTZ

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 QCISD(T)/cc-pVTZ
 hartrees
Energy at 0K-93.802461
Energy at 298.15K-93.803758
HF Energy-93.431573
Nuclear repulsion energy28.101695
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 QCISD(T)/cc-pVTZ
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' 3348 3176        
2 A' 3006 2852        
3 A' 1801 1708        
4 A' 1036 982        
5 A' 869 824        
6 A" 899 852        

Unscaled Zero Point Vibrational Energy (zpe) 5478.6 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 5197.0 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 QCISD(T)/cc-pVTZ
ABC
12.74303 1.29343 1.17424

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.112 0.641 0.000
N2 0.112 -0.592 0.000
H3 -0.677 1.401 0.000
H4 -0.779 -1.099 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.23301.09601.9541
N21.23302.14421.0246
H31.09602.14422.5021
H41.95411.02462.5021

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 119.606 H3 C1 N2 133.961
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at QCISD(T)/cc-pVTZ
 hartrees
Energy at 0K-93.810356
Energy at 298.15K-93.811703
HF Energy-93.436666
Nuclear repulsion energy28.015242
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 QCISD(T)/cc-pVTZ
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' 3461 3283        
2 A' 3046 2890        
3 A' 1743 1653        
4 A' 1210 1148        
5 A' 919 871        
6 A" 981 931        

Unscaled Zero Point Vibrational Energy (zpe) 5679.9 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 5388.0 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 QCISD(T)/cc-pVTZ
ABC
13.37094 1.28248 1.17024

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.653 0.000
N2 0.000 -0.591 0.000
H3 0.902 1.273 0.000
H4 -0.908 -1.053 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.24381.09451.9325
N21.24382.07071.0194
H31.09452.07072.9474
H41.93251.01942.9474

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 116.929 H3 C1 N2 124.511
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability