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All results from a given calculation for C2H3NO (Nitrosoethylene)

using model chemistry: HF/CEP-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 HF/CEP-31G
 hartrees
Energy at 0K-37.879203
Energy at 298.15K 
HF Energy-37.879203
Nuclear repulsion energy55.682668
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/CEP-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' 3476 3133 16.32 66.80 0.67 0.80
2 A' 3410 3074 9.20 103.25 0.35 0.52
3 A' 3367 3035 5.74 63.20 0.19 0.32
4 A' 1824 1644 7.42 146.43 0.21 0.35
5 A' 1740 1569 175.77 134.32 0.33 0.49
6 A' 1546 1394 16.92 33.86 0.42 0.59
7 A' 1399 1261 5.41 17.57 0.38 0.55
8 A' 1268 1143 61.81 45.57 0.56 0.72
9 A' 989 891 22.19 1.73 0.73 0.85
10 A' 643 579 8.83 8.56 0.33 0.50
11 A' 371 335 2.12 0.61 0.75 0.86
12 A" 1152 1039 49.17 16.37 0.75 0.86
13 A" 1091 984 52.29 5.68 0.75 0.86
14 A" 749 675 2.50 7.03 0.75 0.86
15 A" 194 175 0.10 0.78 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11609.3 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 10464.6 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/CEP-31G
ABC
1.77557 0.16509 0.15105

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.224 1.234 0.000
C2 0.000 0.659 0.000
N3 -0.050 -0.780 0.000
O4 -1.188 -1.251 0.000
H5 2.114 0.624 0.000
H6 1.338 2.306 0.000
H7 -0.942 1.183 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7
C11.35282.38373.46341.07871.07842.1669
C21.35281.44002.24932.11442.12211.0776
N32.38371.44001.23112.58003.38432.1558
O43.46342.24931.23113.79724.36282.4463
H51.07872.11442.58003.79721.85313.1065
H61.07842.12213.38434.36281.85312.5413
H72.16691.07762.15582.44633.10652.5413

picture of Nitrosoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 117.162 C1 C2 H7 125.765
C2 C1 H5 120.403 C2 C1 H6 121.174
C2 N3 O4 114.500 N3 C2 H7 117.073
H5 C1 H6 118.423
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.336      
2 C -0.113      
3 N 0.061      
4 O -0.242      
5 H 0.194      
6 H 0.179      
7 H 0.257      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.858 3.689 0.000 4.130
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.167 -0.629 0.000
y -0.629 -24.280 0.000
z 0.000 0.000 -24.239
Traceless
 xyz
x 1.092 -0.629 0.000
y -0.629 -0.576 0.000
z 0.000 0.000 -0.516
Polar
3z2-r2-1.032
x2-y21.113
xy-0.629
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.999 2.841 0.000
y 2.841 5.304 0.000
z 0.000 0.000 2.068


<r2> (average value of r2) Å2
<r2> 63.917
(<r2>)1/2 7.995