return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C2H3NO (Nitrosoethylene)

using model chemistry: mPW1PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31G*
 hartrees
Energy at 0K-207.820936
Energy at 298.15K 
HF Energy-207.820936
Nuclear repulsion energy104.804590
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 mPW1PW91/6-31G*
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' 3308 3137 0.89 59.86 0.69 0.81
2 A' 3217 3051 4.53 149.66 0.16 0.27
3 A' 3200 3035 4.22 15.73 0.71 0.83
4 A' 1723 1634 3.99 14.61 0.13 0.23
5 A' 1658 1572 120.57 70.11 0.29 0.45
6 A' 1437 1362 21.83 20.71 0.40 0.57
7 A' 1302 1234 1.28 7.32 0.52 0.68
8 A' 1174 1113 69.36 22.80 0.50 0.67
9 A' 913 866 26.80 0.09 0.44 0.61
10 A' 621 589 2.22 6.95 0.27 0.42
11 A' 345 327 1.33 0.66 0.67 0.80
12 A" 1021 968 41.27 0.09 0.75 0.86
13 A" 1011 959 17.21 1.81 0.75 0.86
14 A" 688 652 0.62 7.86 0.75 0.86
15 A" 181 171 0.09 1.40 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10898.5 cm-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 10335.1 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 mPW1PW91/6-31G*
ABC
1.77621 0.17062 0.15567

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.207 1.213 0.000
C2 0.000 0.644 0.000
N3 -0.044 -0.778 0.000
O4 -1.176 -1.219 0.000
H5 2.093 0.588 0.000
H6 1.337 2.289 0.000
H7 -0.951 1.174 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7
C11.33422.35143.40551.08521.08372.1580
C21.33421.42262.20392.09422.11971.0883
N32.35141.42261.21512.53653.36352.1517
O43.40552.20391.21513.73594.31592.4038
H51.08522.09422.53653.73591.86213.1003
H61.08372.11973.36354.31591.86212.5453
H72.15801.08832.15172.40383.10032.5453

picture of Nitrosoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 117.030 C1 C2 H7 125.647
C2 C1 H5 119.549 C2 C1 H6 122.150
C2 N3 O4 113.111 N3 C2 H7 117.323
H5 C1 H6 118.301
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.361      
2 C 0.024      
3 N 0.008      
4 O -0.284      
5 H 0.214      
6 H 0.205      
7 H 0.193      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.392 2.875 0.000 3.195
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.954 -0.066 0.000
y -0.066 -22.828 0.000
z 0.000 0.000 -23.185
Traceless
 xyz
x 1.052 -0.066 0.000
y -0.066 -0.259 0.000
z 0.000 0.000 -0.794
Polar
3z2-r2-1.587
x2-y20.874
xy-0.066
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.268 2.111 0.000
y 2.111 5.811 0.000
z 0.000 0.000 1.978


<r2> (average value of r2) Å2
<r2> 75.462
(<r2>)1/2 8.687