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All results from a given calculation for CH3OCHO (methyl formate)

using model chemistry: MP2=FULL/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2=FULL/cc-pVDZ
 hartrees
Energy at 0K-228.453884
Energy at 298.15K-228.458841
HF Energy-227.803773
Nuclear repulsion energy121.993257
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 MP2=FULL/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' 3248 3087 11.63      
2 A' 3117 2963 44.18      
3 A' 3109 2955 45.30      
4 A' 1819 1729 243.09      
5 A' 1504 1429 11.17      
6 A' 1473 1400 2.23      
7 A' 1407 1337 0.44      
8 A' 1251 1189 276.05      
9 A' 1197 1138 53.13      
10 A' 974 925 23.59      
11 A' 778 739 8.50      
12 A' 315 299 12.85      
13 A" 3210 3051 19.52      
14 A" 1492 1418 7.61      
15 A" 1186 1128 1.56      
16 A" 1050 998 0.06      
17 A" 348 330 23.89      
18 A" 158 150 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 13817.6 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 13132.3 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 MP2=FULL/cc-pVDZ
ABC
0.65519 0.23206 0.17716

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.350 0.396 0.000
O2 0.000 0.889 0.000
C3 -0.929 -0.086 0.000
O4 -0.708 -1.276 0.000
H5 1.989 1.286 0.000
H6 1.541 -0.216 0.894
H7 1.541 -0.216 -0.894
H8 -1.933 0.382 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.43722.32962.65111.09581.09971.09973.2825
O21.43721.34692.27782.02822.09622.09621.9979
C32.32961.34691.21063.22472.63012.63011.1071
O42.65112.27781.21063.71962.64162.64162.0617
H51.09582.02823.22473.71961.80431.80434.0243
H61.09972.09622.63012.64161.80431.78723.6362
H71.09972.09622.63012.64161.80431.78723.6362
H83.28251.99791.10712.06174.02433.63623.6362

picture of methyl formate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C3 113.555 O2 C1 H5 105.596
O2 C1 H6 110.736 O2 C1 H7 110.736
O2 C3 O4 125.817 O2 C3 H8 108.611
O4 C3 H8 125.572 H5 C1 H6 110.529
H5 C1 H7 110.529 H6 C1 H7 108.705
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability