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

using model chemistry: CISD/6-31G*

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 CISD/6-31G*
 hartrees
Energy at 0K-244.247212
Energy at 298.15K-244.252084
HF Energy-243.666594
Nuclear repulsion energy124.443851
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 CISD/6-31G*
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' 3311 3066 8.59      
2 A' 3189 2952 13.72      
3 A' 1809 1675 144.72      
4 A' 1586 1468 8.89      
5 A' 1542 1428 1.47      
6 A' 1270 1175 1.19      
7 A' 1141 1056 245.63      
8 A' 961 890 91.80      
9 A' 817 757 32.43      
10 A' 388 359 4.42      
11 A" 3275 3032 19.26      
12 A" 1576 1459 8.03      
13 A" 1230 1138 2.01      
14 A" 372 344 3.93      
15 A" 239 221 0.29      

Unscaled Zero Point Vibrational Energy (zpe) 11352.4 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 10510.0 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 CISD/6-31G*
ABC
0.68884 0.25543 0.19311

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.315 0.303 0.000
O2 0.000 0.869 0.000
H3 1.973 1.163 0.000
H4 1.473 -0.303 0.887
H5 1.473 -0.303 -0.887
N6 -1.028 -0.015 0.000
O7 -0.701 -1.153 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4 H5 N6 O7
C11.43121.08311.08641.08642.36462.4867
O21.43121.99482.08072.08071.35592.1397
H31.08311.99481.78561.78563.22433.5377
H41.08642.08071.78561.77492.66932.4968
H51.08642.08071.78561.77492.66932.4968
N62.36461.35593.22432.66932.66931.1841
O72.48672.13973.53772.49682.49681.1841

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 116.056 O2 C1 H3 104.155
O2 C1 H4 110.734 O2 C1 H5 110.734
O2 N6 O7 114.624 H3 C1 H4 110.791
H3 C1 H5 110.791 H4 C1 H5 109.549
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability