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

using model chemistry: MP3/cc-pVDZ

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 MP3/cc-pVDZ
 hartrees
Energy at 0K-267.655322
Energy at 298.15K-267.662607
HF Energy-266.847800
Nuclear repulsion energy177.667992
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 MP3/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' 3188 3022 19.57      
2 A' 3119 2957 57.52      
3 A' 3109 2947 23.00      
4 A' 3096 2935 16.37      
5 A' 1898 1799 301.83      
6 A' 1530 1450 6.51      
7 A' 1503 1425 1.99      
8 A' 1448 1373 17.84      
9 A' 1434 1359 4.13      
10 A' 1401 1328 0.85      
11 A' 1271 1205 442.65      
12 A' 1155 1095 9.90      
13 A' 1080 1024 14.73      
14 A' 894 848 10.36      
15 A' 811 769 4.88      
16 A' 390 370 6.46      
17 A' 239 227 6.21      
18 A" 3193 3027 30.59      
19 A" 3157 2992 13.70      
20 A" 1488 1410 5.17      
21 A" 1314 1245 1.72      
22 A" 1196 1133 4.73      
23 A" 1075 1019 0.39      
24 A" 817 775 0.24      
25 A" 345 327 20.37      
26 A" 246 233 2.80      
27 A" 77 73 0.39      

Unscaled Zero Point Vibrational Energy (zpe) 20237.1 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 19182.7 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 MP3/cc-pVDZ
ABC
0.59174 0.09720 0.08623

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.176 -0.267 0.000
C2 -0.684 -0.560 0.000
O3 0.000 0.707 0.000
C4 1.337 0.619 0.000
O5 1.973 -0.398 0.000
H6 -2.744 -1.212 0.000
H7 -2.457 0.312 0.894
H8 -2.457 0.312 -0.894
H9 -0.380 -1.137 -0.890
H10 -0.380 -1.137 0.890
H11 1.770 1.639 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51982.38393.62294.15101.10251.10211.10212.18482.18484.3818
C21.51981.44042.34052.66252.15992.16882.16881.10291.10293.2955
O32.38391.44041.33992.26183.34832.64442.64442.08212.08212.0002
C43.62292.34051.33991.20024.47283.91023.91022.61192.61191.1078
O54.15102.66252.26181.20024.78654.57524.57522.62152.62152.0476
H61.10252.15993.34834.47284.78651.79031.79032.52702.52705.3386
H71.10212.16882.64443.91024.57521.79031.78853.09802.53284.5196
H81.10212.16882.64443.91024.57521.79031.78852.53283.09804.5196
H92.18481.10292.08212.61192.62152.52703.09802.53281.77933.6216
H102.18481.10292.08212.61192.62152.52702.53283.09801.77933.6216
H114.38183.29552.00021.10782.04765.33864.51964.51963.62163.6216

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 107.246 C1 C2 H9 111.834
C1 C2 H10 111.834 C2 C1 H6 109.888
C2 C1 H7 110.608 C2 C1 H8 110.608
C2 O3 C4 114.611 O3 C2 H9 109.176
O3 C2 H10 109.176 O3 C4 O5 125.766
O3 C4 H11 109.235 O5 C4 H11 124.999
H6 C1 H7 108.604 H6 C1 H8 108.604
H7 C1 H8 108.469 H9 C2 H10 107.534
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability