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

using model chemistry: B2PLYP=FULL/6-31+G**

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=FULL/6-31+G**
 hartrees
Energy at 0K-268.143846
Energy at 298.15K-268.151019
HF Energy-267.875350
Nuclear repulsion energy177.021915
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=FULL/6-31+G**
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' 3168 3013 21.12      
2 A' 3120 2967 46.21      
3 A' 3109 2957 18.50      
4 A' 3088 2937 16.30      
5 A' 1778 1691 339.29      
6 A' 1542 1467 7.40      
7 A' 1526 1451 3.30      
8 A' 1453 1382 17.82      
9 A' 1413 1344 1.32      
10 A' 1408 1339 5.86      
11 A' 1224 1164 413.89      
12 A' 1148 1092 8.26      
13 A' 1043 992 19.85      
14 A' 860 818 15.77      
15 A' 784 745 1.42      
16 A' 382 363 5.28      
17 A' 225 214 7.96      
18 A" 3183 3027 34.37      
19 A" 3157 3002 2.58      
20 A" 1513 1439 7.40      
21 A" 1310 1246 1.17      
22 A" 1195 1137 4.55      
23 A" 1038 988 0.00      
24 A" 822 782 0.34      
25 A" 348 331 23.94      
26 A" 238 226 2.63      
27 A" 61 58 0.64      

Unscaled Zero Point Vibrational Energy (zpe) 20068.7 cm-1
Scaled (by 0.951) Zero Point Vibrational Energy (zpe) 19085.3 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 B2PLYP=FULL/6-31+G**
ABC
0.59442 0.09576 0.08510

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.184 -0.267 0.000
C2 -0.703 -0.572 0.000
O3 0.000 0.700 0.000
C4 1.341 0.629 0.000
O5 1.999 -0.390 0.000
H6 -2.749 -1.201 0.000
H7 -2.464 0.305 0.886
H8 -2.464 0.305 -0.886
H9 -0.396 -1.134 -0.883
H10 -0.396 -1.134 0.883
H11 1.758 1.642 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51232.38903.63774.18481.09181.09061.09062.17462.17464.3806
C21.51231.45372.37122.70792.14062.15702.15701.09081.09083.3108
O32.38901.45371.34322.27683.34282.64782.64782.07402.07401.9947
C43.63772.37121.34321.21314.48143.92023.92022.62832.62831.0954
O54.18482.70792.27681.21314.81654.60224.60222.65872.65872.0466
H61.09182.14063.34284.48144.81651.77041.77042.51412.51415.3294
H71.09062.15702.64783.92024.60221.77041.77133.07792.51884.5165
H81.09062.15702.64783.92024.60221.77041.77132.51883.07794.5165
H92.17461.09082.07402.62832.65872.51413.07792.51881.76633.6234
H102.17461.09082.07402.62832.65872.51412.51883.07791.76633.6234
H114.38063.31081.99471.09542.04665.32944.51654.51653.62343.6234

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 107.291 C1 C2 H9 112.301
C1 C2 H10 112.301 C2 C1 H6 109.514
C2 C1 H7 110.895 C2 C1 H8 110.895
C2 O3 C4 115.892 O3 C2 H9 108.347
O3 C2 H10 108.347 O3 C4 O5 125.848
O3 C4 H11 109.345 O5 C4 H11 124.808
H6 C1 H7 108.432 H6 C1 H8 108.432
H7 C1 H8 108.602 H9 C2 H10 108.116
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability