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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: B1B95/6-31G(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 B1B95/6-31G(2df,p)
 hartrees
Energy at 0K-93.919915
Energy at 298.15K-93.921200
HF Energy-93.919915
Nuclear repulsion energy28.307509
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 B1B95/6-31G(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' 3374 3231 3.15      
2 A' 2997 2870 44.53      
3 A' 1896 1816 26.59      
4 A' 1007 964 122.27      
5 A' 847 811 135.58      
6 A" 910 872 5.69      

Unscaled Zero Point Vibrational Energy (zpe) 5515.0 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 5281.7 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 B1B95/6-31G(2df,p)
ABC
13.07579 1.31127 1.19176

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.111 0.635 0.000
N2 0.111 -0.584 0.000
H3 -0.680 1.397 0.000
H4 -0.758 -1.124 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.21901.09851.9624
N21.21902.13321.0231
H31.09852.13322.5231
H41.96241.02312.5231

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 121.911 H3 C1 N2 133.929
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.127      
2 N -0.298      
3 H 0.156      
4 H 0.269      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.035 0.293 0.000 2.056
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.782 0.622 0.000
y 0.622 -10.753 0.000
z 0.000 0.000 -12.321
Traceless
 xyz
x -0.245 0.622 0.000
y 0.622 1.298 0.000
z 0.000 0.000 -1.053
Polar
3z2-r2-2.107
x2-y2-1.029
xy0.622
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.125 0.052 0.000
y 0.052 3.800 0.000
z 0.000 0.000 1.510


<r2> (average value of r2) Å2
<r2> 16.477
(<r2>)1/2 4.059

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at B1B95/6-31G(2df,p)
 hartrees
Energy at 0K-93.927567
Energy at 298.15K-93.928909
HF Energy-93.927567
Nuclear repulsion energy28.226087
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 B1B95/6-31G(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' 3486 3338 7.09      
2 A' 3045 2916 27.62      
3 A' 1839 1761 26.36      
4 A' 1200 1149 7.48      
5 A' 904 866 218.06      
6 A" 985 943 96.92      

Unscaled Zero Point Vibrational Energy (zpe) 5729.1 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 5486.8 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 B1B95/6-31G(2df,p)
ABC
13.58075 1.30366 1.18947

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.001 0.647 0.000
N2 -0.001 -0.583 0.000
H3 0.907 1.264 0.000
H4 -0.897 -1.068 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.22961.09781.9343
N21.22962.05771.0185
H31.09782.05772.9477
H41.93431.01852.9477

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.430 H3 C1 N2 124.195
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.152      
2 N -0.290      
3 H 0.163      
4 H 0.279      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.471 0.111 0.000 0.484
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.976 2.944 0.000
y 2.944 -11.182 0.000
z 0.000 0.000 -12.361
Traceless
 xyz
x 0.796 2.944 0.000
y 2.944 0.487 0.000
z 0.000 0.000 -1.283
Polar
3z2-r2-2.565
x2-y20.206
xy2.944
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.315 0.517 0.000
y 0.517 3.621 0.000
z 0.000 0.000 1.546


<r2> (average value of r2) Å2
<r2> 16.438
(<r2>)1/2 4.054