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All results from a given calculation for NH2OH (hydroxylamine)

using model chemistry: HF/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/CEP-31G*
 hartrees
Energy at 0K-27.052551
Energy at 298.15K 
HF Energy-27.052551
Nuclear repulsion energy25.290094
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 HF/CEP-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' 4171 3746 60.69 64.44 0.31 0.48
2 A' 3735 3354 3.25 100.53 0.13 0.23
3 A' 1846 1658 18.87 12.27 0.69 0.81
4 A' 1542 1384 30.77 5.69 0.66 0.79
5 A' 1266 1137 161.57 5.09 0.75 0.86
6 A' 1136 1020 17.50 25.53 0.21 0.35
7 A" 3830 3440 0.57 60.78 0.75 0.86
8 A" 1468 1319 0.36 11.82 0.75 0.86
9 A" 464 416 237.69 6.90 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9728.7 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 8736.4 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 HF/CEP-31G*
ABC
6.63511 0.88173 0.87765

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.009 0.690 0.000
O2 -0.009 -0.721 0.000
H3 -0.930 -0.953 0.000
H4 0.535 0.946 0.808
H5 0.535 0.946 -0.808

Atom - Atom Distances (Å)
  N1 O2 H3 H4 H5
N11.41061.88301.00741.0074
O21.41060.94981.93101.9310
H31.88300.94982.53122.5312
H41.00741.93102.53121.6153
H51.00741.93102.53121.6153

picture of hydroxylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 O2 H3 104.123 O2 N1 H4 104.763
O2 N1 H5 104.763 H4 N1 H5 106.590
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.460      
2 O -0.550      
3 H 0.423      
4 H 0.293      
5 H 0.293      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.130 0.685 0.000 0.697
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.049 4.203 0.000
y 4.203 -12.643 0.000
z 0.000 0.000 -11.416
Traceless
 xyz
x 0.980 4.203 0.000
y 4.203 -1.410 0.000
z 0.000 0.000 0.430
Polar
3z2-r20.859
x2-y21.594
xy4.203
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.545 0.422 0.000
y 0.422 2.316 0.000
z 0.000 0.000 1.599


<r2> (average value of r2) Å2
<r2> 18.249
(<r2>)1/2 4.272