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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: PBEPBE/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 PBEPBE/3-21G
 hartrees
Energy at 0K-93.316055
Energy at 298.15K-93.317335
HF Energy-93.316055
Nuclear repulsion energy27.828281
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 PBEPBE/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' 2997 2970 22.91      
2 A' 2848 2823 79.23      
3 A' 1807 1791 10.23      
4 A' 922 914 93.85      
5 A' 892 884 189.86      
6 A" 907 899 7.36      

Unscaled Zero Point Vibrational Energy (zpe) 5186.9 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 5139.7 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 PBEPBE/3-21G
ABC
13.87622 1.25107 1.14760

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.107 0.648 0.000
N2 0.107 -0.587 0.000
H3 -0.667 1.444 0.000
H4 -0.729 -1.225 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.23491.11052.0512
N21.23492.17331.0519
H31.11052.17332.6693
H42.05121.05192.6693

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 127.339 H3 C1 N2 135.760
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.036      
2 N -0.513      
3 H 0.194      
4 H 0.283      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.316 -0.036 0.000 2.316
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.176 0.580 0.000
y 0.580 -10.773 0.000
z 0.000 0.000 -12.385
Traceless
 xyz
x -0.596 0.580 0.000
y 0.580 1.507 0.000
z 0.000 0.000 -0.911
Polar
3z2-r2-1.822
x2-y2-1.402
xy0.580
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.623 0.121 0.000
y 0.121 3.852 0.000
z 0.000 0.000 0.961


<r2> (average value of r2) Å2
<r2> 16.999
(<r2>)1/2 4.123

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at PBEPBE/3-21G
 hartrees
Energy at 0K-93.323013
Energy at 298.15K-93.324356
HF Energy-93.323013
Nuclear repulsion energy27.702487
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 PBEPBE/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' 3199 3169 1.82      
2 A' 2921 2895 39.66      
3 A' 1714 1699 7.26      
4 A' 1180 1170 17.45      
5 A' 924 916 212.51      
6 A" 983 974 120.28      

Unscaled Zero Point Vibrational Energy (zpe) 5460.7 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 5411.1 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 PBEPBE/3-21G
ABC
13.38610 1.25200 1.14491

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.002 0.663 0.000
N2 -0.002 -0.590 0.000
H3 0.923 1.275 0.000
H4 -0.898 -1.123 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.25271.10881.9980
N21.25272.08141.0426
H31.10882.08143.0107
H41.99801.04263.0107

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 120.751 H3 C1 N2 123.506
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.014      
2 N -0.501      
3 H 0.211      
4 H 0.303      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.504 -0.171 0.000 0.532
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.091 3.261 0.000
y 3.261 -11.387 0.000
z 0.000 0.000 -12.437
Traceless
 xyz
x 0.820 3.261 0.000
y 3.261 0.378 0.000
z 0.000 0.000 -1.198
Polar
3z2-r2-2.397
x2-y20.295
xy3.261
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.986 0.620 0.000
y 0.620 3.450 0.000
z 0.000 0.000 0.995


<r2> (average value of r2) Å2
<r2> 16.885
(<r2>)1/2 4.109