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All results from a given calculation for CH3ONO (Methyl nitrite)

using model chemistry: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS cis 1A'
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-243.548161
Energy at 298.15K-243.552464
Nuclear repulsion energy119.777082
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 B3PW91/3-21G*
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' 3134 3006 11.53      
2 A' 3052 2928 29.49      
3 A' 1562 1499 9.51      
4 A' 1495 1435 94.26      
5 A' 1462 1402 57.59      
6 A' 1176 1128 9.40      
7 A' 1005 964 48.45      
8 A' 851 816 279.63      
9 A' 565 542 8.53      
10 A' 334 320 7.97      
11 A" 3142 3015 24.66      
12 A" 1543 1480 6.00      
13 A" 1142 1096 0.05      
14 A" 222 213 0.46      
15 A" 141 135 0.75      

Unscaled Zero Point Vibrational Energy (zpe) 10412.4 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 9989.7 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 B3PW91/3-21G*
ABC
0.62003 0.24299 0.18054

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.330 0.317 0.000
O2 0.000 0.948 0.000
H3 2.023 1.157 0.000
H4 1.467 -0.305 0.889
H5 1.467 -0.305 -0.889
N6 -1.086 -0.053 0.000
O7 -0.667 -1.207 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4 H5 N6 O7
C11.47191.08961.09401.09402.44372.5119
O21.47192.03392.12442.12441.47702.2563
H31.08962.03391.79981.79983.33633.5816
H41.09402.12441.79981.77892.71492.4815
H51.09402.12441.79981.77892.71492.4815
N62.44371.47703.33632.71492.71491.2279
O72.51192.25633.58162.48152.48151.2279

picture of Methyl nitrite state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 N6 111.924 O2 C1 H3 104.129
O2 C1 H4 110.919 O2 C1 H5 110.919
O2 N6 O7 112.732 H3 C1 H4 111.025
H3 C1 H5 111.025 H4 C1 H5 108.791
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.426      
2 O -0.339      
3 H 0.253      
4 H 0.239      
5 H 0.239      
6 N 0.306      
7 O -0.272      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.204 -0.117 0.000 2.207
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.053 0.654 0.000
y 0.654 -25.673 0.000
z 0.000 0.000 -21.721
Traceless
 xyz
x 2.644 0.654 0.000
y 0.654 -4.286 0.000
z 0.000 0.000 1.643
Polar
3z2-r23.285
x2-y24.620
xy0.654
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 67.648
(<r2>)1/2 8.225