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

using model chemistry: MP2=FULL/aug-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/aug-cc-pVDZ
 hartrees
Energy at 0K-267.702047
Energy at 298.15K-267.709257
HF Energy-266.862703
Nuclear repulsion energy176.659795
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/aug-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' 3178 3080 15.62      
2 A' 3122 3026 44.16      
3 A' 3103 3007 15.29      
4 A' 3082 2987 13.21      
5 A' 1744 1691 303.34      
6 A' 1509 1462 7.71      
7 A' 1492 1446 2.07      
8 A' 1418 1374 16.85      
9 A' 1384 1342 1.61      
10 A' 1376 1334 2.64      
11 A' 1203 1166 409.14      
12 A' 1138 1103 6.84      
13 A' 1048 1015 18.58      
14 A' 857 831 12.59      
15 A' 777 753 1.81      
16 A' 377 366 4.99      
17 A' 229 222 7.07      
18 A" 3189 3091 26.11      
19 A" 3160 3063 4.93      
20 A" 1480 1435 6.05      
21 A" 1294 1254 1.43      
22 A" 1176 1140 3.48      
23 A" 1031 999 0.16      
24 A" 812 787 0.48      
25 A" 347 336 20.06      
26 A" 243 236 2.76      
27 A" 76 74 0.57      

Unscaled Zero Point Vibrational Energy (zpe) 19921.5 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 19308.0 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/aug-cc-pVDZ
ABC
0.58075 0.09636 0.08533

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.183 -0.254 0.000
C2 -0.699 -0.561 0.000
O3 0.000 0.717 0.000
C4 1.347 0.617 0.000
O5 1.983 -0.421 0.000
H6 -2.751 -1.196 0.000
H7 -2.461 0.322 0.893
H8 -2.461 0.322 -0.893
H9 -0.388 -1.127 -0.891
H10 -0.388 -1.127 0.891
H11 1.788 1.628 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51562.38913.63554.16941.10011.09881.09882.18502.18504.3941
C21.51561.45722.36062.68562.14822.16432.16431.09961.09963.3131
O32.38911.45721.35072.28713.35102.64782.64782.08462.08462.0064
C43.63552.36061.35071.21784.48103.92233.92232.61642.61641.1033
O54.16942.68562.28711.21784.79734.59374.59372.62992.62992.0590
H61.10012.14823.35104.48104.79731.78511.78512.52572.52575.3457
H71.09882.16432.64783.92234.59371.78511.78683.09462.52874.5338
H81.09882.16432.64783.92234.59371.78511.78682.52873.09464.5338
H92.18501.09962.08462.61642.62992.52573.09462.52871.78123.6222
H102.18501.09962.08462.61642.62992.52572.52873.09461.78123.6222
H114.39413.31312.00641.10332.05905.34574.53384.53383.62223.6222

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 112.362
C1 C2 H10 112.362 C2 C1 H6 109.402
C2 C1 H7 110.747 C2 C1 H8 110.747
C2 O3 C4 114.374 O3 C2 H9 108.428
O3 C2 H10 108.428 O3 C4 O5 125.779
O3 C4 H11 109.278 O5 C4 H11 124.943
H6 C1 H7 108.547 H6 C1 H8 108.547
H7 C1 H8 108.793 H9 C2 H10 108.180
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability