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 CH3NO2 (Methane, nitro-)

using model chemistry: CCSD/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS Os out of place 1A'
Energy calculated at CCSD/cc-pVDZ
 hartrees
Energy at 0K-244.387309
Energy at 298.15K 
HF Energy-243.680090
Nuclear repulsion energy124.897734
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 CCSD/cc-pVDZ
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' 3222 3052 1.83      
2 A' 3113 2949 2.06      
3 A' 1490 1412 63.19      
4 A' 1477 1400 33.74      
5 A' 1415 1340 1.31      
6 A' 1142 1081 0.75      
7 A' 964 913 9.41      
8 A' 689 653 28.50      
9 A' 619 587 6.58      
10 A" 3249 3078 0.40      
11 A" 1729 1637 281.23      
12 A" 1468 1391 26.74      
13 A" 1115 1056 12.41      
14 A" 489 463 0.55      
15 A" 15 15 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 11097.7 cm-1
Scaled (by 0.9473) Zero Point Vibrational Energy (zpe) 10512.9 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 CCSD/cc-pVDZ
ABC
0.40932 0.35291 0.19675

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.001 -1.320 0.000
N2 -0.012 0.176 0.000
H3 1.058 -1.629 0.000
H4 -0.500 -1.663 0.914
H5 -0.500 -1.663 -0.914
O6 0.001 0.728 -1.088
O7 0.001 0.728 1.088

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.49661.10091.09751.09752.31872.3187
N21.49662.09882.11112.11111.21971.2197
H31.10092.09881.80691.80692.80232.8023
H41.09752.11111.80691.82793.15812.4487
H51.09752.11111.80691.82792.44873.1581
O62.31871.21972.80233.15812.44872.1759
O72.31871.21972.80232.44873.15812.1759

picture of Methane, nitro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O6 116.853 C1 N2 O7 116.853
N2 C1 H3 106.816 N2 C1 H4 107.947
N2 C1 H5 107.947 H3 C1 H4 110.557
H3 C1 H5 110.557 H4 C1 H5 112.768
O6 N2 O7 126.260
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability