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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: B3PW91/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-93.927394
Energy at 298.15K-93.928682
HF Energy-93.927394
Nuclear repulsion energy28.221953
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(2df,p)
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' 3345 3216 3.41      
2 A' 2990 2875 48.05      
3 A' 1872 1799 24.97      
4 A' 1009 971 129.09      
5 A' 855 822 124.36      
6 A" 909 873 4.97      

Unscaled Zero Point Vibrational Energy (zpe) 5489.5 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 5277.6 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(2df,p)
ABC
13.00882 1.30310 1.18445

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.111 0.636 0.000
N2 0.111 -0.587 0.000
H3 -0.675 1.407 0.000
H4 -0.766 -1.119 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.22321.10051.9622
N21.22322.14291.0259
H31.10052.14292.5272
H41.96221.02592.5272

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 121.238 H3 C1 N2 134.429
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.138      
2 N -0.304      
3 H 0.167      
4 H 0.274      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.035 0.352 0.000 2.065
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.776 0.641 0.000
y 0.641 -10.781 0.000
z 0.000 0.000 -12.340
Traceless
 xyz
x -0.216 0.641 0.000
y 0.641 1.278 0.000
z 0.000 0.000 -1.062
Polar
3z2-r2-2.124
x2-y2-0.996
xy0.641
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.143 0.056 0.000
y 0.056 3.834 0.000
z 0.000 0.000 1.520


<r2> (average value of r2) Å2
<r2> 16.539
(<r2>)1/2 4.067

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-93.934867
Energy at 298.15K-93.936208
HF Energy-93.934867
Nuclear repulsion energy28.148797
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(2df,p)
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 3327 5.61      
2 A' 3034 2917 29.16      
3 A' 1819 1749 25.38      
4 A' 1199 1153 8.26      
5 A' 905 870 218.43      
6 A" 982 944 97.76      

Unscaled Zero Point Vibrational Energy (zpe) 5699.3 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 5479.3 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(2df,p)
ABC
13.53488 1.29595 1.18271

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.000 0.648 0.000
N2 -0.000 -0.585 0.000
H3 0.906 1.271 0.000
H4 -0.900 -1.067 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.23331.09961.9369
N21.23332.06551.0209
H31.09962.06552.9544
H41.93691.02092.9544

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.161 H3 C1 N2 124.495
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.166      
2 N -0.294      
3 H 0.175      
4 H 0.285      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.481 0.146 0.000 0.502
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.972 2.964 0.000
y 2.964 -11.191 0.000
z 0.000 0.000 -12.379
Traceless
 xyz
x 0.813 2.964 0.000
y 2.964 0.484 0.000
z 0.000 0.000 -1.297
Polar
3z2-r2-2.595
x2-y20.219
xy2.964
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.329 0.513 0.000
y 0.513 3.658 0.000
z 0.000 0.000 1.558


<r2> (average value of r2) Å2
<r2> 16.494
(<r2>)1/2 4.061