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All results from a given calculation for C2H3NO (Nitrosoethylene)

using model chemistry: QCISD(T)/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD(T)/6-311+G(3df,2p)
 hartrees
Energy at 0K-207.555587
Energy at 298.15K 
HF Energy-206.748964
Nuclear repulsion energy104.307216
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 QCISD(T)/6-311+G(3df,2p)
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' 3260 3109        
2 A' 3176 3029        
3 A' 3153 3007        
4 A' 1654 1577        
5 A' 1536 1465        
6 A' 1414 1348        
7 A' 1279 1220        
8 A' 1143 1090        
9 A' 889 847        
10 A' 607 579        
11 A' 346 330        
12 A" 985 940        
13 A" 971 926        
14 A" 661 630        
15 A" 164 156        

Unscaled Zero Point Vibrational Energy (zpe) 10617.5 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 10125.9 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 QCISD(T)/6-311+G(3df,2p)
ABC
1.75896 0.16887 0.15408

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.212 1.221 0.000
C2 0.000 0.651 0.000
N3 -0.043 -0.783 0.000
O4 -1.181 -1.227 0.000
H5 2.097 0.595 0.000
H6 1.334 2.297 0.000
H7 -0.954 1.171 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7
C11.33972.36473.42361.08411.08222.1670
C21.33971.43422.21822.09772.11851.0867
N32.36471.43421.22152.54523.37322.1554
O43.42362.21821.22153.75024.32892.4082
H51.08412.09772.54523.75021.86503.1051
H61.08222.11853.37324.32891.86502.5501
H72.16701.08672.15542.40823.10512.5501

picture of Nitrosoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 116.930 C1 C2 H7 126.212
C2 C1 H5 119.497 C2 C1 H6 121.662
C2 N3 O4 113.046 N3 C2 H7 116.859
H5 C1 H6 118.841
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability