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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: CCSD/TZVP

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/TZVP
 hartrees
Energy at 0K-93.735521
Energy at 298.15K-93.736821
HF Energy-93.427615
Nuclear repulsion energy28.181488
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/TZVP
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' 3363 3210 1.83      
2 A' 3063 2924 44.76      
3 A' 1828 1744 28.61      
4 A' 1065 1016 105.46      
5 A' 849 811 127.49      
6 A" 923 881 4.55      

Unscaled Zero Point Vibrational Energy (zpe) 5545.7 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 5292.8 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/TZVP
ABC
12.74115 1.30258 1.18176

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.112 0.637 0.000
N2 0.112 -0.592 0.000
H3 -0.668 1.404 0.000
H4 -0.787 -1.085 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.22871.09361.9425
N21.22872.14221.0252
H31.09362.14222.4915
H41.94251.02522.4915

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.779 H3 C1 N2 134.495
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at CCSD/TZVP
 hartrees
Energy at 0K-93.744297
Energy at 298.15K-93.745650
HF Energy-93.433579
Nuclear repulsion energy28.129193
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/TZVP
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' 3489 3330 4.71      
2 A' 3112 2970 23.31      
3 A' 1791 1710 30.26      
4 A' 1231 1175 10.29      
5 A' 918 876 221.02      
6 A" 1006 960 107.77      

Unscaled Zero Point Vibrational Energy (zpe) 5773.2 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 5510.0 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 CCSD/TZVP
ABC
13.57378 1.29231 1.17997

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.001 0.648 0.000
N2 0.001 -0.589 0.000
H3 0.891 1.281 0.000
H4 -0.909 -1.048 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.23701.09121.9250
N21.23702.07011.0193
H31.09122.07012.9428
H41.92501.01932.9428

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 116.786 H3 C1 N2 125.410
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability