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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: B3PW91/6-31+G**

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 B3PW91/6-31+G**
 hartrees
Energy at 0K-93.928737
Energy at 298.15K-93.930020
HF Energy-93.928737
Nuclear repulsion energy28.154906
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 B3PW91/6-31+G**
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' 3357 3223 1.38      
2 A' 3005 2885 51.21      
3 A' 1868 1793 40.63      
4 A' 1010 969 114.38      
5 A' 846 812 145.67      
6 A" 902 866 5.66      

Unscaled Zero Point Vibrational Energy (zpe) 5493.3 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 5274.1 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 B3PW91/6-31+G**
ABC
13.04940 1.29507 1.17815

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.111 0.639 0.000
N2 0.111 -0.588 0.000
H3 -0.677 1.408 0.000
H4 -0.762 -1.128 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.22681.10041.9713
N21.22682.14521.0270
H31.10042.14522.5374
H41.97131.02702.5374

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 121.759 H3 C1 N2 134.302
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.105      
2 N -0.338      
3 H 0.156      
4 H 0.287      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.438 0.425 0.000 2.475
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.390 0.731 0.000
y 0.731 -11.287 0.000
z 0.000 0.000 -12.854
Traceless
 xyz
x -0.320 0.731 0.000
y 0.731 1.335 0.000
z 0.000 0.000 -1.016
Polar
3z2-r2-2.031
x2-y2-1.103
xy0.731
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.398 0.079 0.000
y 0.079 4.415 0.000
z 0.000 0.000 1.733


<r2> (average value of r2) Å2
<r2> 16.928
(<r2>)1/2 4.114

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at B3PW91/6-31+G**
 hartrees
Energy at 0K-93.937357
Energy at 298.15K-93.938694
HF Energy-93.937357
Nuclear repulsion energy28.099877
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 B3PW91/6-31+G**
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' 3483 3344 10.84      
2 A' 3065 2942 21.33      
3 A' 1819 1746 36.83      
4 A' 1191 1143 12.24      
5 A' 898 862 230.71      
6 A" 977 938 129.98      

Unscaled Zero Point Vibrational Energy (zpe) 5716.0 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 5487.9 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 B3PW91/6-31+G**
ABC
13.70356 1.28804 1.17738

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.000 0.650 0.000
N2 -0.000 -0.586 0.000
H3 0.900 1.278 0.000
H4 -0.896 -1.076 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.23601.09781.9451
N21.23602.07011.0215
H31.09782.07012.9615
H41.94511.02152.9615

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.687 H3 C1 N2 124.881
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.103      
2 N -0.362      
3 H 0.163      
4 H 0.302      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.526 0.211 0.000 0.567
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.476 3.488 0.000
y 3.488 -11.714 0.000
z 0.000 0.000 -12.935
Traceless
 xyz
x 0.849 3.488 0.000
y 3.488 0.491 0.000
z 0.000 0.000 -1.340
Polar
3z2-r2-2.681
x2-y20.238
xy3.488
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.578 0.135 0.000
y 0.135 4.303 0.000
z 0.000 0.000 1.866


<r2> (average value of r2) Å2
<r2> 16.866
(<r2>)1/2 4.107