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

using model chemistry: TPSSh/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 TPSSh/aug-cc-pVDZ
 hartrees
Energy at 0K-268.430908
Energy at 298.15K-268.438006
HF Energy-268.430908
Nuclear repulsion energy176.713954
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 TPSSh/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' 3116 3014 26.85      
2 A' 3063 2963 11.11      
3 A' 3047 2947 60.73      
4 A' 3041 2941 20.20      
5 A' 1761 1703 324.21      
6 A' 1504 1455 6.41      
7 A' 1488 1439 1.76      
8 A' 1412 1366 10.19      
9 A' 1378 1333 0.75      
10 A' 1369 1324 5.43      
11 A' 1186 1148 374.71      
12 A' 1125 1089 9.41      
13 A' 1024 991 24.36      
14 A' 842 815 14.39      
15 A' 771 746 0.70      
16 A' 367 355 5.36      
17 A' 217 210 7.41      
18 A" 3132 3029 44.79      
19 A" 3105 3004 1.17      
20 A" 1477 1429 5.24      
21 A" 1277 1236 1.24      
22 A" 1167 1129 3.48      
23 A" 1023 989 0.12      
24 A" 797 771 0.58      
25 A" 347 335 20.26      
26 A" 227 220 1.88      
27 A" 54 53 0.76      

Unscaled Zero Point Vibrational Energy (zpe) 19658.1 cm-1
Scaled (by 0.9673) Zero Point Vibrational Energy (zpe) 19015.3 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 TPSSh/aug-cc-pVDZ
ABC
0.58680 0.09586 0.08506

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.185 -0.276 0.000
C2 -0.699 -0.572 0.000
O3 0.000 0.711 0.000
C4 1.343 0.631 0.000
O5 1.992 -0.392 0.000
H6 -2.742 -1.224 0.000
H7 -2.473 0.295 0.892
H8 -2.473 0.295 -0.892
H9 -0.383 -1.131 -0.890
H10 -0.383 -1.131 0.890
H11 1.768 1.649 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51552.39803.64324.17901.09901.09791.09792.18472.18474.3977
C21.51551.46072.37012.69702.14442.16682.16681.09751.09753.3199
O32.39801.46071.34522.27683.35582.66192.66192.08122.08122.0019
C43.64322.37011.34521.21174.48643.93343.93342.62222.62221.1033
O54.17902.69702.27681.21174.80644.60494.60492.64132.64132.0535
H61.09902.14443.35584.48644.80641.78221.78222.52312.52315.3477
H71.09792.16682.66193.93344.60491.78221.78483.09522.53084.5410
H81.09792.16682.66193.93344.60491.78221.78482.53083.09524.5410
H92.18471.09752.08122.62222.64132.52313.09522.53081.77913.6263
H102.18471.09752.08122.62222.64132.52312.53083.09521.77913.6263
H114.39773.31992.00191.10332.05355.34774.54104.54103.62633.6263

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 107.349 C1 C2 H9 112.475
C1 C2 H10 112.475 C2 C1 H6 109.169
C2 C1 H7 111.005 C2 C1 H8 111.005
C2 O3 C4 115.210 O3 C2 H9 108.038
O3 C2 H10 108.038 O3 C4 O5 125.773
O3 C4 H11 109.294 O5 C4 H11 124.933
H6 C1 H7 108.424 H6 C1 H8 108.424
H7 C1 H8 108.741 H9 C2 H10 108.285
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.364      
2 C 0.889      
3 O -0.419      
4 C 0.703      
5 O -0.422      
6 H -0.082      
7 H -0.103      
8 H -0.103      
9 H -0.280      
10 H -0.280      
11 H -0.266      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.145 0.551 0.000 2.215
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.740 0.234 0.000
y 0.234 6.959 0.000
z 0.000 0.000 5.517


<r2> (average value of r2) Å2
<r2> 136.818
(<r2>)1/2 11.697