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All results from a given calculation for HCOOC2H5 (Ethyl formate)

using model chemistry: HF/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS trans 1A'
Energy calculated at HF/6-31G**
 hartrees
Energy at 0K-266.838917
Energy at 298.15K-266.846338
HF Energy-266.838917
Nuclear repulsion energy179.316830
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 HF/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' 3267 2949 37.19 67.36 0.69 0.82
2 A' 3262 2945 72.83 109.24 0.24 0.39
3 A' 3235 2920 16.01 99.06 0.17 0.29
4 A' 3195 2884 21.34 103.31 0.01 0.03
5 A' 2006 1811 400.86 5.65 0.33 0.49
6 A' 1656 1495 5.60 2.52 0.72 0.83
7 A' 1627 1468 2.21 19.66 0.75 0.86
8 A' 1571 1418 16.77 4.82 0.66 0.79
9 A' 1544 1394 6.95 4.66 0.52 0.69
10 A' 1527 1378 0.77 0.39 0.32 0.48
11 A' 1377 1243 552.18 1.29 0.16 0.28
12 A' 1235 1114 17.88 5.91 0.19 0.32
13 A' 1115 1007 19.48 5.29 0.74 0.85
14 A' 944 853 20.48 8.76 0.33 0.50
15 A' 859 775 4.02 4.29 0.43 0.60
16 A' 410 370 7.10 1.63 0.35 0.52
17 A' 245 221 9.64 0.37 0.36 0.53
18 A" 3293 2972 61.34 3.67 0.75 0.86
19 A" 3266 2948 2.30 108.88 0.75 0.86
20 A" 1613 1456 4.04 17.76 0.75 0.86
21 A" 1417 1279 1.54 9.83 0.75 0.86
22 A" 1292 1166 5.95 0.89 0.75 0.86
23 A" 1187 1071 4.69 3.49 0.75 0.86
24 A" 876 791 0.02 0.14 0.75 0.86
25 A" 353 319 30.05 1.80 0.75 0.86
26 A" 255 231 4.60 0.66 0.75 0.86
27 A" 75 67 0.77 0.26 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 21350.8 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 19271.2 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 HF/6-31G**
ABC
0.62361 0.09726 0.08683

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.168 -0.292 0.000
C2 -0.683 -0.583 0.000
O3 0.000 0.671 0.000
C4 1.315 0.642 0.000
O5 1.986 -0.333 0.000
H6 -2.725 -1.223 0.000
H7 -2.448 0.277 0.880
H8 -2.448 0.277 -0.880
H9 -0.384 -1.145 -0.875
H10 -0.384 -1.145 0.875
H11 1.711 1.654 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51262.37183.60594.15431.08521.08411.08412.16232.16234.3397
C21.51261.42802.34432.68152.13972.15092.15091.08231.08233.2771
O32.37181.42801.31552.22583.31852.63092.63092.05162.05161.9737
C43.60592.34431.31551.18414.45003.88183.88182.61642.61641.0866
O54.15432.68152.22581.18414.79494.56184.56182.65382.65382.0062
H61.08522.13973.31854.45004.79491.76031.76032.50092.50095.2877
H71.08412.15092.63093.88184.56181.76031.75913.05942.50604.4689
H81.08412.15092.63093.88184.56181.76031.75912.50603.05944.4689
H92.16231.08232.05162.61642.65382.50093.05942.50601.75093.6039
H102.16231.08232.05162.61642.65382.50092.50603.05941.75093.6039
H114.33973.27711.97371.08662.00625.28774.46894.46893.60393.6039

picture of Ethyl formate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 107.486 C1 C2 H9 111.806
C1 C2 H10 111.806 C2 C1 H6 109.809
C2 C1 H7 110.775 C2 C1 H8 110.775
C2 O3 C4 117.345 O3 C2 H9 108.849
O3 C2 H10 108.849 O3 C4 O5 125.778
O3 C4 H11 110.141 O5 C4 H11 124.081
H6 C1 H7 108.480 H6 C1 H8 108.480
H7 C1 H8 108.452 H9 C2 H10 107.976
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.355      
2 C 0.090      
3 O -0.596      
4 C 0.607      
5 O -0.535      
6 H 0.122      
7 H 0.132      
8 H 0.132      
9 H 0.136      
10 H 0.136      
11 H 0.132      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.067 0.707 0.000 2.185
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.635 5.346 0.000
y 5.346 -28.871 0.000
z 0.000 0.000 -29.113
Traceless
 xyz
x -4.643 5.346 0.000
y 5.346 2.502 0.000
z 0.000 0.000 2.140
Polar
3z2-r24.281
x2-y2-4.763
xy5.346
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.200 0.120 0.000
y 0.120 5.302 0.000
z 0.000 0.000 4.120


<r2> (average value of r2) Å2
<r2> 134.248
(<r2>)1/2 11.587