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 CH3NO (nitrosomethane)

using model chemistry: B3LYP/aug-cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/aug-cc-pVQZ
 hartrees
Energy at 0K-169.878545
Energy at 298.15K-169.882249
HF Energy-169.878545
Nuclear repulsion energy70.592971
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 B3LYP/aug-cc-pVQZ
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' 3124 3027 11.54      
2 A' 3017 2923 1.95      
3 A' 1661 1609 85.54      
4 A' 1454 1409 26.66      
5 A' 1373 1330 26.45      
6 A' 1154 1118 19.32      
7 A' 843 816 27.82      
8 A' 578 560 1.40      
9 A" 3095 2999 2.13      
10 A" 1451 1406 12.11      
11 A" 972 942 2.25      
12 A" 168 163 1.23      

Unscaled Zero Point Vibrational Energy (zpe) 9444.4 cm-1
Scaled (by 0.9689) Zero Point Vibrational Energy (zpe) 9150.6 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 B3LYP/aug-cc-pVQZ
ABC
2.08428 0.38306 0.34414

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.943 -0.576 0.000
N2 0.000 0.564 0.000
O3 1.155 0.244 0.000
H4 -0.422 -1.532 0.000
H5 -1.579 -0.457 0.879
H6 -1.579 -0.457 -0.879

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.47932.25281.08901.09111.0911
N21.47931.19862.13802.07552.0755
O32.25281.19862.37542.95642.9564
H41.08902.13802.37541.80741.8074
H51.09112.07552.95641.80741.7572
H61.09112.07552.95641.80741.7572

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 114.138 N2 C1 H4 111.805
N2 C1 H5 106.720 N2 C1 H6 106.720
H4 C1 H5 111.998 H4 C1 H6 111.998
H5 C1 H6 107.259
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.604      
2 N 0.101      
3 O -0.369      
4 H 0.330      
5 H 0.271      
6 H 0.271      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.020 -1.397 0.000 2.456
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.569 0.477 0.000
y 0.477 -19.461 0.000
z 0.000 0.000 -16.886
Traceless
 xyz
x -0.396 0.477 0.000
y 0.477 -1.734 0.000
z 0.000 0.000 2.130
Polar
3z2-r24.259
x2-y20.892
xy0.477
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.263 0.396 0.000
y 0.396 4.141 0.000
z 0.000 0.000 3.323


<r2> (average value of r2) Å2
<r2> 41.612
(<r2>)1/2 6.451