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All results from a given calculation for H2NO (nitroxide)

using model chemistry: BLYP/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no C2V 2B1
1 2 yes CS 2A'

Conformer 1 (C2V)

Jump to S1C2
Energy calculated at BLYP/3-21G*
 hartrees
Energy at 0K-130.325101
Energy at 298.15K 
HF Energy-130.325101
Nuclear repulsion energy33.380026
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 BLYP/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 A1 3207 3187 0.70      
2 A1 1637 1626 5.15      
3 A1 1160 1153 0.61      
4 B1 167i 166i 268.27      
5 B2 3315 3293 11.48      
6 B2 1150 1143 7.70      

Unscaled Zero Point Vibrational Energy (zpe) 5151.3 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 5117.8 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 BLYP/3-21G*
ABC
10.63018 1.00910 0.92161

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -0.577
O2 0.000 0.000 0.780
H3 0.000 0.887 -1.104
H4 0.000 -0.887 -1.104

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.35711.03191.0319
O21.35712.08272.0827
H31.03192.08271.7740
H41.03192.08271.7740

picture of nitroxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 120.728 O2 N1 H4 120.728
H3 N1 H4 118.544
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.318      
2 O -0.267      
3 H 0.293      
4 H 0.293      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -2.895 2.895
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.978 0.000 0.000
y 0.000 -9.732 0.000
z 0.000 0.000 -10.211
Traceless
 xyz
x -2.006 0.000 0.000
y 0.000 1.362 0.000
z 0.000 0.000 0.644
Polar
3z2-r21.287
x2-y2-2.245
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.459 0.000 0.000
y 0.000 1.363 0.000
z 0.000 0.000 2.498


<r2> (average value of r2) Å2
<r2> 17.857
(<r2>)1/2 4.226

Conformer 2 (CS)

Jump to S1C1
Energy calculated at BLYP/3-21G*
 hartrees
Energy at 0K-130.325128
Energy at 298.15K-130.327281
HF Energy-130.325128
Nuclear repulsion energy33.356431
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 BLYP/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' 3193 3173 1.25      
2 A' 1636 1625 5.36      
3 A' 1155 1147 0.73      
4 A' 243 241 254.08      
5 A" 3301 3279 13.21      
6 A" 1157 1149 7.14      

Unscaled Zero Point Vibrational Energy (zpe) 5342.1 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 5307.4 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 BLYP/3-21G*
ABC
10.50726 1.00786 0.92232

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.015 0.579 0.000
O2 -0.015 -0.780 0.000
H3 0.115 1.095 0.885
H4 0.115 1.095 -0.885

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.35871.03291.0329
O21.35872.07792.0779
H31.03292.07791.7695
H41.03292.07791.7695

picture of nitroxide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 120.025 O2 N1 H4 120.025
H3 N1 H4 117.858
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.316      
2 O -0.267      
3 H 0.292      
4 H 0.292      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.459 2.852 0.000 2.889
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.935 0.441 0.000
y 0.441 -10.294 0.000
z 0.000 0.000 -9.763
Traceless
 xyz
x -1.906 0.441 0.000
y 0.441 0.555 0.000
z 0.000 0.000 1.351
Polar
3z2-r22.701
x2-y2-1.641
xy0.441
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.478 0.077 0.000
y 0.077 2.495 0.000
z 0.000 0.000 1.368


<r2> (average value of r2) Å2
<r2> 17.868
(<r2>)1/2 4.227