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: B2PLYP/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 B2PLYP/6-31G(2df,p)
 hartrees
Energy at 0K-207.724238
Energy at 298.15K 
HF Energy-207.488991
Nuclear repulsion energy104.521682
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 B2PLYP/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' 3295 3147 0.38 54.16 0.69 0.82
2 A' 3206 3061 3.98 135.61 0.17 0.29
3 A' 3188 3045 1.31 19.98 0.30 0.46
4 A' 1680 1604 1.85 26.65 0.16 0.27
5 A' 1542 1473 81.66 44.34 0.29 0.45
6 A' 1425 1361 20.17 21.13 0.38 0.55
7 A' 1289 1231 1.39 6.96 0.49 0.65
8 A' 1155 1103 65.92 23.17 0.49 0.66
9 A' 899 858 26.93 0.13 0.36 0.53
10 A' 613 586 1.37 6.87 0.23 0.37
11 A' 342 327 1.29 0.55 0.66 0.79
12 A" 1024 978 26.59 0.15 0.75 0.86
13 A" 1006 961 16.68 1.19 0.75 0.86
14 A" 694 663 0.30 5.36 0.75 0.86
15 A" 180 172 0.05 1.23 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10769.0 cm-1
Scaled (by 0.955) Zero Point Vibrational Energy (zpe) 10284.4 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 B2PLYP/6-31G(2df,p)
ABC
1.77149 0.16967 0.15484

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.203 1.223 0.000
C2 0.000 0.646 0.000
N3 -0.038 -0.780 0.000
O4 -1.177 -1.227 0.000
H5 2.091 0.602 0.000
H6 1.326 2.297 0.000
H7 -0.955 1.164 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7
C11.33422.35643.41581.08301.08152.1586
C21.33421.42682.21242.09102.11791.0858
N32.35641.42681.22372.53803.36632.1490
O43.41582.21241.22373.74484.32302.4010
H51.08302.09102.53803.74481.85963.0965
H61.08152.11793.36634.32301.85962.5472
H72.15861.08582.14902.40103.09652.5472

picture of Nitrosoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 117.133 C1 C2 H7 125.934
C2 C1 H5 119.417 C2 C1 H6 122.147
C2 N3 O4 112.949 N3 C2 H7 116.933
H5 C1 H6 118.436
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.303      
2 C 0.062      
3 N 0.041      
4 O -0.250      
5 H 0.160      
6 H 0.158      
7 H 0.133      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.246 2.737 0.000 3.007
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.176 -0.026 -0.003
y -0.026 -22.977 -0.003
z -0.003 -0.003 -23.150
Traceless
 xyz
x 0.888 -0.026 -0.003
y -0.026 -0.314 -0.003
z -0.003 -0.003 -0.574
Polar
3z2-r2-1.148
x2-y20.802
xy-0.026
xz-0.003
yz-0.003


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.274 2.014 0.000
y 2.014 6.031 0.000
z 0.000 0.000 2.464


<r2> (average value of r2) Å2
<r2> 75.819
(<r2>)1/2 8.707