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

using model chemistry: CCSD/6-311G**

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 CCSD/6-311G**
 hartrees
Energy at 0K-267.761956
Energy at 298.15K-267.769242
HF Energy-266.898008
Nuclear repulsion energy177.901258
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 CCSD/6-311G**
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' 3144 3144 25.44      
2 A' 3096 3096 57.38      
3 A' 3088 3088 21.66      
4 A' 3066 3066 15.87      
5 A' 1848 1848 294.86      
6 A' 1548 1548 7.42      
7 A' 1523 1523 2.21      
8 A' 1463 1463 19.98      
9 A' 1434 1434 1.24      
10 A' 1421 1421 1.28      
11 A' 1255 1255 433.07      
12 A' 1160 1160 8.10      
13 A' 1069 1069 13.38      
14 A' 892 892 12.61      
15 A' 806 806 3.85      
16 A' 391 391 6.04      
17 A' 239 239 6.53      
18 A" 3155 3155 42.45      
19 A" 3128 3128 4.94      
20 A" 1508 1508 5.25      
21 A" 1327 1327 1.95      
22 A" 1209 1209 4.39      
23 A" 1069 1069 0.30      
24 A" 827 827 0.07      
25 A" 343 343 21.80      
26 A" 246 246 2.82      
27 A" 77 77 0.43      

Unscaled Zero Point Vibrational Energy (zpe) 20164.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 20164.6 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 CCSD/6-311G**
ABC
0.59538 0.09720 0.08627

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.175 -0.265 0.000
C2 -0.687 -0.563 0.000
O3 0.000 0.705 0.000
C4 1.336 0.618 0.000
O5 1.976 -0.396 0.000
H6 -2.741 -1.203 0.000
H7 -2.451 0.311 0.889
H8 -2.451 0.311 -0.889
H9 -0.384 -1.132 -0.885
H10 -0.384 -1.132 0.885
H11 1.761 1.632 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51742.38123.62034.15301.09571.09451.09452.17752.17754.3693
C21.51741.44182.34282.66832.15092.16002.16001.09471.09473.2881
O32.38121.44181.33882.26193.33922.63702.63702.07432.07431.9905
C43.62032.34281.33881.19964.46503.90233.90232.60862.60861.0990
O54.15302.66832.26191.19964.78504.57054.57052.62572.62572.0393
H61.09572.15093.33924.46504.78501.77941.77942.51812.51815.3201
H71.09452.16002.63703.90234.57051.77941.77823.08232.52054.5034
H81.09452.16002.63703.90234.57051.77941.77822.52053.08234.5034
H92.17751.09472.07432.60862.62572.51813.08232.52051.77003.6087
H102.17751.09472.07432.60862.62572.51812.52053.08231.77003.6087
H114.36933.28811.99051.09902.03935.32014.50344.50343.60873.6087

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 107.129 C1 C2 H9 111.929
C1 C2 H10 111.929 C2 C1 H6 109.745
C2 C1 H7 110.534 C2 C1 H8 110.534
C2 O3 C4 114.770 O3 C2 H9 108.953
O3 C2 H10 108.953 O3 C4 O5 125.931
O3 C4 H11 109.079 O5 C4 H11 124.990
H6 C1 H7 108.668 H6 C1 H8 108.668
H7 C1 H8 108.642 H9 C2 H10 107.883
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability