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All results from a given calculation for HCNH (methyleneazane)

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

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 B3PW91/6-31G**
 hartrees
Energy at 0K-93.922895
Energy at 298.15K-93.924188
HF Energy-93.922895
Nuclear repulsion energy28.160720
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 B3PW91/6-31G**
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' 3338 3199 4.34      
2 A' 2998 2873 56.58      
3 A' 1878 1799 27.44      
4 A' 1021 979 129.53      
5 A' 872 836 125.10      
6 A" 909 871 6.13      

Unscaled Zero Point Vibrational Energy (zpe) 5507.4 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 5278.3 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 B3PW91/6-31G**
ABC
12.92622 1.29781 1.17940

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.111 0.638 0.000
N2 0.111 -0.589 0.000
H3 -0.674 1.410 0.000
H4 -0.772 -1.115 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.22651.10111.9626
N21.22652.14741.0280
H31.10112.14742.5270
H41.96261.02802.5270

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 120.787 H3 C1 N2 134.546
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.036      
2 N -0.445      
3 H 0.137      
4 H 0.272      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.192 0.414 0.000 2.231
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.838 0.735 0.000
y 0.735 -10.880 0.000
z 0.000 0.000 -12.357
Traceless
 xyz
x -0.219 0.735 0.000
y 0.735 1.218 0.000
z 0.000 0.000 -0.999
Polar
3z2-r2-1.997
x2-y2-0.958
xy0.735
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.955 0.043 0.000
y 0.043 3.836 0.000
z 0.000 0.000 1.206


<r2> (average value of r2) Å2
<r2> 16.611
(<r2>)1/2 4.076

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-93.930832
Energy at 298.15K-93.932175
HF Energy-93.930832
Nuclear repulsion energy28.091056
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 B3PW91/6-31G**
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 3317 2.99      
2 A' 3045 2918 32.56      
3 A' 1826 1750 26.49      
4 A' 1211 1161 10.51      
5 A' 915 877 219.91      
6 A" 983 942 113.37      

Unscaled Zero Point Vibrational Energy (zpe) 5720.5 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 5482.5 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 B3PW91/6-31G**
ABC
13.40151 1.29161 1.17807

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.000 0.650 0.000
N2 -0.000 -0.587 0.000
H3 0.908 1.271 0.000
H4 -0.906 -1.062 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.23671.09971.9369
N21.23672.06741.0227
H31.09972.06742.9547
H41.93691.02272.9547

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 117.704 H3 C1 N2 124.368
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.002      
2 N -0.435      
3 H 0.150      
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
  -0.561 0.204 0.000 0.596
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.978 3.053 0.000
y 3.053 -11.269 0.000
z 0.000 0.000 -12.394
Traceless
 xyz
x 0.853 3.053 0.000
y 3.053 0.417 0.000
z 0.000 0.000 -1.271
Polar
3z2-r2-2.541
x2-y20.291
xy3.053
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.196 0.532 0.000
y 0.532 3.641 0.000
z 0.000 0.000 1.253


<r2> (average value of r2) Å2
<r2> 16.543
(<r2>)1/2 4.067