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All results from a given calculation for C2H3NO (Nitrosoethylene)

using model chemistry: HF/3-21G*

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/3-21G*
 hartrees
Energy at 0K-205.500273
Energy at 298.15K 
HF Energy-205.500273
Nuclear repulsion energy104.660660
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/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' 3431 3097 1.46 55.08 0.65 0.79
2 A' 3381 3052 2.79 85.28 0.30 0.46
3 A' 3342 3016 0.59 54.39 0.11 0.20
4 A' 1848 1668 1.46 65.85 0.20 0.33
5 A' 1605 1449 76.19 83.08 0.33 0.49
6 A' 1578 1425 3.92 14.54 0.44 0.62
7 A' 1415 1277 5.39 12.99 0.46 0.63
8 A' 1241 1120 30.68 29.09 0.54 0.70
9 A' 943 851 30.53 5.28 0.60 0.75
10 A' 651 588 5.37 5.88 0.30 0.46
11 A' 370 334 1.43 0.19 0.74 0.85
12 A" 1184 1069 34.00 7.71 0.75 0.86
13 A" 1127 1017 59.75 1.79 0.75 0.86
14 A" 758 685 2.36 14.79 0.75 0.86
15 A" 194 175 0.01 1.49 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11534.2 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 10410.7 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 HF/3-21G*
ABC
1.79320 0.16923 0.15464

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.162 1.259 0.000
C2 0.000 0.647 0.000
N3 -0.016 -0.795 0.000
O4 -1.151 -1.253 0.000
H5 2.074 0.696 0.000
H6 1.234 2.327 0.000
H7 -0.956 1.129 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7
C11.31342.36743.41451.07211.07102.1224
C21.31341.44152.22102.07492.08501.0712
N32.36741.44151.22422.56723.36302.1412
O43.41452.22101.22423.76834.30182.3895
H51.07212.07492.56723.76831.83553.0615
H61.07102.08503.36304.30181.83552.4967
H72.12241.07122.14122.38953.06152.4967

picture of Nitrosoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 118.418 C1 C2 H7 125.459
C2 C1 H5 120.532 C2 C1 H6 121.629
C2 N3 O4 112.603 N3 C2 H7 116.122
H5 C1 H6 117.839
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.387      
2 C -0.053      
3 N 0.000      
4 O -0.341      
5 H 0.262      
6 H 0.247      
7 H 0.271      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.450 3.100 0.000 3.423
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.695 -0.376 0.000
y -0.376 -23.675 0.000
z 0.000 0.000 -23.863
Traceless
 xyz
x 1.074 -0.376 0.000
y -0.376 -0.397 0.000
z 0.000 0.000 -0.677
Polar
3z2-r2-1.355
x2-y20.980
xy-0.376
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.018 2.247 0.000
y 2.247 4.922 0.000
z 0.000 0.000 1.356


<r2> (average value of r2) Å2
<r2> 76.235
(<r2>)1/2 8.731