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 HCOOC2H5 (Ethyl formate)

using model chemistry: B2PLYP=FULLultrafine/Def2TZVPP

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 B2PLYP=FULLultrafine/Def2TZVPP
 hartrees
Energy at 0K-268.315832
Energy at 298.15K 
HF Energy-267.971244
Nuclear repulsion energy177.823863
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 B2PLYP=FULLultrafine/Def2TZVPP
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' 3141 3141 19.28      
2 A' 3084 3084 9.04      
3 A' 3075 3075 58.43      
4 A' 3067 3067 14.24      
5 A' 1777 1777 303.58      
6 A' 1532 1532 7.80      
7 A' 1513 1513 2.54      
8 A' 1438 1438 13.91      
9 A' 1409 1409 0.39      
10 A' 1405 1405 4.95      
11 A' 1212 1212 408.96      
12 A' 1143 1143 8.97      
13 A' 1040 1040 19.24      
14 A' 861 861 13.47      
15 A' 789 789 1.55      
16 A' 382 382 5.08      
17 A' 228 228 7.18      
18 A" 3151 3151 31.93      
19 A" 3124 3124 2.60      
20 A" 1501 1501 6.31      
21 A" 1310 1310 1.39      
22 A" 1191 1191 3.92      
23 A" 1047 1047 0.00      
24 A" 819 819 0.60      
25 A" 348 348 20.44      
26 A" 239 239 2.24      
27 A" 64 64 0.72      

Unscaled Zero Point Vibrational Energy (zpe) 19945.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 19945.2 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 B2PLYP=FULLultrafine/Def2TZVPP
ABC
0.60027 0.09657 0.08583

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.176 -0.272 0.000
C2 -0.697 -0.569 0.000
O3 0.000 0.699 0.000
C4 1.336 0.626 0.000
O5 1.988 -0.383 0.000
H6 -2.737 -1.205 0.000
H7 -2.457 0.298 0.883
H8 -2.457 0.298 -0.883
H9 -0.391 -1.132 -0.879
H10 -0.391 -1.132 0.879
H11 1.751 1.638 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.50862.38303.62534.16601.08831.08741.08742.16782.16784.3673
C21.50861.44732.35882.69192.13602.15132.15131.08761.08763.2966
O32.38301.44731.33802.26383.33372.64162.64162.06792.06791.9871
C43.62532.35881.33801.20214.46533.90843.90842.61632.61631.0937
O54.16602.69192.26381.20214.79574.58314.58312.64432.64432.0355
H61.08832.13603.33374.46534.79571.76481.76482.50622.50625.3125
H71.08742.15132.64163.90844.58311.76481.76553.06862.51244.5041
H81.08742.15132.64163.90844.58311.76481.76552.51243.06864.5041
H92.16781.08762.06792.61632.64432.50623.06862.51241.75843.6100
H102.16781.08762.06792.61632.64432.50622.51243.06861.75843.6100
H114.36733.29661.98711.09372.03555.31254.50414.50413.61003.6100

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 107.434 C1 C2 H9 112.218
C1 C2 H10 112.218 C2 C1 H6 109.622
C2 C1 H7 110.885 C2 C1 H8 110.885
C2 O3 C4 115.691 O3 C2 H9 108.496
O3 C2 H10 108.496 O3 C4 O5 125.969
O3 C4 H11 109.195 O5 C4 H11 124.836
H6 C1 H7 108.418 H6 C1 H8 108.418
H7 C1 H8 108.540 H9 C2 H10 107.866
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability