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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: CCD/aug-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 CCD/aug-cc-pVTZ
 hartrees
Energy at 0K-93.784019
Energy at 298.15K-93.785310
HF Energy-93.433438
Nuclear repulsion energy28.539593
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/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3446 3298 12.00      
2 A' 3041 2910 134.73      
3 A' 2255 2158 309.50      
4 A' 1042 997 122.90      
5 A' 812 777 183.76      
6 A" 935 895 3.20      

Unscaled Zero Point Vibrational Energy (zpe) 5765.2 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 5517.3 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 CCD/aug-cc-pVTZ
ABC
13.32394 1.33308 1.21183

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.110 0.627 0.000
N2 0.110 -0.579 0.000
H3 -0.663 1.404 0.000
H4 -0.760 -1.111 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.20641.09571.9433
N21.20642.12841.0193
H31.09572.12842.5163
H41.94331.01932.5163

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 121.420 H3 C1 N2 135.138
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at CCD/aug-cc-pVTZ
 hartrees
Energy at 0K-93.791890
Energy at 298.15K-93.793223
HF Energy-93.439114
Nuclear repulsion energy28.488238
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/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3544 3392 38.47      
2 A' 3075 2943 85.51      
3 A' 2253 2156 331.30      
4 A' 1192 1141 13.53      
5 A' 866 829 333.22      
6 A" 971 929 143.30      

Unscaled Zero Point Vibrational Energy (zpe) 5950.3 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 5694.5 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/aug-cc-pVTZ
ABC
14.38513 1.32147 1.21028

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.001 0.639 0.000
N2 -0.001 -0.575 0.000
H3 0.886 1.280 0.000
H4 -0.878 -1.085 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.21371.09411.9340
N21.21372.05591.0144
H31.09412.05592.9500
H41.93401.01442.9500

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 120.185 H3 C1 N2 125.880
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability