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 CH3OCHO (methyl formate)

using model chemistry: B3LYP/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-229.028121
Energy at 298.15K-229.032818
Nuclear repulsion energy119.319398
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/LANL2DZ
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' 3217 3092 16.73      
2 A' 3134 3012 43.39      
3 A' 3075 2956 26.55      
4 A' 1673 1609 286.21      
5 A' 1510 1451 11.82      
6 A' 1471 1414 10.31      
7 A' 1387 1333 7.65      
8 A' 1201 1155 100.51      
9 A' 1154 1109 176.29      
10 A' 877 843 18.99      
11 A' 734 706 11.32      
12 A' 273 262 17.13      
13 A" 3174 3051 29.70      
14 A" 1502 1443 15.83      
15 A" 1155 1110 0.19      
16 A" 1005 966 1.37      
17 A" 339 326 42.80      
18 A" 89 85 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 13483.9 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 12960.7 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 B3LYP/LANL2DZ
ABC
0.65028 0.21458 0.16647

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.410 0.439 0.000
O2 0.000 0.881 0.000
C3 -0.962 -0.097 0.000
O4 -0.744 -1.315 0.000
H5 1.993 1.360 0.000
H6 1.615 -0.159 0.893
H7 1.615 -0.159 -0.893
H8 -1.952 0.375 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.47732.43172.77771.09021.09451.09453.3617
O21.47731.37212.31872.04972.11892.11892.0160
C32.43171.37211.23743.29492.72892.72891.0961
O42.77772.31871.23743.82732.77542.77542.0770
H51.09022.04973.29493.82731.80221.80224.0655
H61.09452.11892.72892.77541.80221.78673.7157
H71.09452.11892.72892.77541.80221.78673.7157
H83.36172.01601.09612.07704.06553.71573.7157

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 117.120 O2 C1 H5 104.934
O2 C1 H6 110.055 O2 C1 H7 110.055
O2 C3 O4 125.317 O2 C3 H8 109.020
O4 C3 H8 125.663 H5 C1 H6 111.156
H5 C1 H7 111.156 H6 C1 H7 109.414
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.452      
2 O -0.273      
3 C 0.075      
4 O -0.265      
5 H 0.230      
6 H 0.235      
7 H 0.235      
8 H 0.215      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.180 1.662 0.000 2.039
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.221 -1.355 0.000
y -1.355 -29.745 0.000
z 0.000 0.000 -23.024
Traceless
 xyz
x 8.164 -1.355 0.000
y -1.355 -9.122 0.000
z 0.000 0.000 0.958
Polar
3z2-r21.917
x2-y211.524
xy-1.355
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.580 0.472 0.000
y 0.472 4.445 0.000
z 0.000 0.000 2.639


<r2> (average value of r2) Å2
<r2> 74.582
(<r2>)1/2 8.636