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: PBEPBEultrafine/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBEultrafine/6-31G(2df,p)
 hartrees
Energy at 0K-207.657580
Energy at 298.15K 
HF Energy-207.657580
Nuclear repulsion energy103.850853
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 PBEPBEultrafine/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' 3196 3163 0.79 59.78 0.68 0.81
2 A' 3098 3066 2.51 145.42 0.12 0.22
3 A' 3073 3042 9.07 36.89 0.55 0.71
4 A' 1627 1610 1.43 15.10 0.12 0.21
5 A' 1519 1503 98.10 39.75 0.28 0.44
6 A' 1361 1347 21.85 16.92 0.40 0.57
7 A' 1231 1219 2.09 6.54 0.55 0.71
8 A' 1098 1087 64.90 17.03 0.51 0.67
9 A' 851 842 30.97 0.47 0.18 0.31
10 A' 592 586 0.76 8.49 0.23 0.38
11 A' 324 320 1.13 0.90 0.65 0.79
12 A" 982 972 21.72 0.20 0.75 0.86
13 A" 959 949 18.05 0.64 0.75 0.86
14 A" 651 644 0.17 5.37 0.75 0.86
15 A" 175 173 0.11 1.27 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10367.6 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 10260.8 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 PBEPBEultrafine/6-31G(2df,p)
ABC
1.74534 0.16765 0.15296

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.214 1.227 0.000
C2 0.000 0.650 0.000
N3 -0.041 -0.784 0.000
O4 -1.186 -1.233 0.000
H5 2.103 0.591 0.000
H6 1.349 2.310 0.000
H7 -0.962 1.180 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7
C11.34382.36983.43641.09371.09162.1758
C21.34381.43462.22552.10432.13871.0978
N32.36981.43461.23042.54683.39142.1690
O43.43642.22551.23043.76124.35622.4232
H51.09372.10432.54683.76121.87773.1212
H61.09162.13873.39144.35621.87772.5719
H72.17581.09782.16902.42323.12122.5719

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 125.738
C2 C1 H5 119.026 C2 C1 H6 122.512
C2 N3 O4 113.025 N3 C2 H7 117.231
H5 C1 H6 118.462
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.298      
2 C 0.092      
3 N -0.001      
4 O -0.223      
5 H 0.155      
6 H 0.155      
7 H 0.120      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.276 2.747 0.000 3.029
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.084 0.028 0.000
y 0.028 -22.760 0.000
z 0.000 0.000 -23.054
Traceless
 xyz
x 0.823 0.028 0.000
y 0.028 -0.191 0.000
z 0.000 0.000 -0.631
Polar
3z2-r2-1.262
x2-y20.676
xy0.028
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.504 2.060 0.000
y 2.060 6.377 0.000
z 0.000 0.000 2.510


<r2> (average value of r2) Å2
<r2> 76.513
(<r2>)1/2 8.747