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

using model chemistry: QCISD/cc-pVTZ

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 QCISD/cc-pVTZ
 hartrees
Energy at 0K-244.624583
Energy at 298.15K-244.629333
HF Energy-243.759696
Nuclear repulsion energy123.795889
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/cc-pVTZ
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' 3195 3052 7.26      
2 A' 3076 2939 15.30      
3 A' 1702 1626 138.97      
4 A' 1517 1450 8.35      
5 A' 1466 1400 3.08      
6 A' 1213 1159 0.42      
7 A' 1061 1014 137.19      
8 A' 887 847 85.15      
9 A' 714 682 95.48      
10 A' 371 354 2.65      
11 A" 3154 3014 19.12      
12 A" 1503 1436 8.34      
13 A" 1182 1129 1.42      
14 A" 353 338 2.26      
15 A" 218 208 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 10805.6 cm-1
Scaled (by 0.9555) Zero Point Vibrational Energy (zpe) 10324.7 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 QCISD/cc-pVTZ
ABC
0.68017 0.25348 0.19131

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.313 0.304 0.000
O2 0.000 0.877 0.000
H3 1.983 1.156 0.000
H4 1.470 -0.307 0.887
H5 1.470 -0.307 -0.887
N6 -1.019 -0.017 0.000
O7 -0.708 -1.158 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4 H5 N6 O7
C11.43261.08421.08821.08822.35412.4946
O21.43262.00272.08522.08521.35562.1543
H31.08422.00271.78611.78613.22343.5495
H41.08822.08521.78611.77402.65822.5014
H51.08822.08521.78611.77402.65822.5014
N62.35411.35563.22342.65822.65821.1820
O72.49462.15433.54952.50142.50141.1820

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 115.171 O2 C1 H3 104.600
O2 C1 H4 110.889 O2 C1 H5 110.889
O2 N6 O7 116.024 H3 C1 H4 110.610
H3 C1 H5 110.610 H4 C1 H5 109.192
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability