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

using model chemistry: MP2=FULL/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 MP2=FULL/cc-pVDZ
 hartrees
Energy at 0K-267.641685
Energy at 298.15K-267.648943
HF Energy-266.846353
Nuclear repulsion energy177.277002
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 MP2=FULL/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' 3206 3047 14.68      
2 A' 3112 2958 2.43      
3 A' 3109 2955 82.93      
4 A' 3103 2949 14.87      
5 A' 1815 1725 254.57      
6 A' 1522 1447 6.86      
7 A' 1501 1427 2.15      
8 A' 1435 1363 20.21      
9 A' 1407 1337 0.48      
10 A' 1389 1320 1.99      
11 A' 1234 1173 414.89      
12 A' 1148 1091 8.22      
13 A' 1068 1015 16.08      
14 A' 878 835 10.12      
15 A' 795 755 3.74      
16 A' 385 366 5.95      
17 A' 234 223 5.77      
18 A" 3214 3055 22.01      
19 A" 3171 3013 14.78      
20 A" 1486 1413 6.06      
21 A" 1305 1240 1.35      
22 A" 1189 1130 4.61      
23 A" 1049 997 0.05      
24 A" 816 775 0.51      
25 A" 354 336 18.32      
26 A" 250 238 2.45      
27 A" 74 70 0.39      

Unscaled Zero Point Vibrational Energy (zpe) 20123.8 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 19125.6 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 MP2=FULL/cc-pVDZ
ABC
0.58454 0.09716 0.08603

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.175 -0.249 0.000
C2 -0.692 -0.555 0.000
O3 0.000 0.714 0.000
C4 1.343 0.609 0.000
O5 1.974 -0.424 0.000
H6 -2.752 -1.186 0.000
H7 -2.450 0.332 0.893
H8 -2.450 0.332 -0.893
H9 -0.388 -1.131 -0.889
H10 -0.388 -1.131 0.889
H11 1.778 1.628 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51412.37873.62114.15311.10081.10011.10012.18202.18204.3758
C21.51411.44562.34442.66972.15432.16222.16221.10181.10183.2962
O32.37871.44561.34712.27903.34442.63582.63582.08432.08431.9990
C43.62112.34441.34711.21084.47113.90683.90682.61012.61011.1076
O54.15312.66972.27901.21084.78734.57684.57682.62102.62102.0611
H61.10082.15433.34444.47114.78731.78711.78712.52602.52605.3328
H71.10012.16222.63583.90684.57681.78711.78553.09302.52854.5117
H81.10012.16222.63583.90684.57681.78711.78552.52853.09304.5117
H92.18201.10182.08432.61012.62102.52603.09302.52851.77723.6180
H102.18201.10182.08432.61012.62102.52602.52853.09301.77723.6180
H114.37583.29621.99901.10762.06115.33284.51174.51173.61803.6180

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 106.944 C1 C2 H9 112.089
C1 C2 H10 112.089 C2 C1 H6 109.935
C2 C1 H7 110.601 C2 C1 H8 110.601
C2 O3 C4 114.127 O3 C2 H9 109.071
O3 C2 H10 109.071 O3 C4 O5 125.910
O3 C4 H11 108.653 O5 C4 H11 125.437
H6 C1 H7 108.577 H6 C1 H8 108.577
H7 C1 H8 108.492 H9 C2 H10 107.521
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability