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

using model chemistry: HF/daug-cc-pVTZ

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 HF/daug-cc-pVTZ
 hartrees
Energy at 0K-266.935990
Energy at 298.15K-266.943403
HF Energy-266.935990
Nuclear repulsion energy179.607438
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 HF/daug-cc-pVTZ
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' 3234 2925 42.05      
2 A' 3220 2913 57.45      
3 A' 3206 2900 13.41      
4 A' 3169 2867 20.47      
5 A' 1961 1774 443.15      
6 A' 1645 1488 8.28      
7 A' 1615 1461 2.55      
8 A' 1561 1412 15.02      
9 A' 1534 1388 4.79      
10 A' 1521 1376 0.24      
11 A' 1363 1233 554.36      
12 A' 1228 1111 15.90      
13 A' 1107 1001 20.68      
14 A' 938 849 19.49      
15 A' 855 773 2.36      
16 A' 409 370 6.09      
17 A' 243 219 9.49      
18 A" 3259 2948 54.34      
19 A" 3228 2920 3.91      
20 A" 1601 1449 5.38      
21 A" 1415 1280 2.04      
22 A" 1287 1165 4.59      
23 A" 1189 1076 1.67      
24 A" 874 791 0.15      
25 A" 349 316 26.52      
26 A" 255 231 4.58      
27 A" 76 68 1.00      

Unscaled Zero Point Vibrational Energy (zpe) 21170.5 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 19150.9 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 HF/daug-cc-pVTZ
ABC
0.63004 0.09720 0.08689

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/daug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.166 -0.303 0.000
C2 0.683 -0.586 0.000
O3 0.000 0.666 0.000
C4 -1.310 0.648 0.000
O5 -1.989 -0.316 0.000
H6 2.714 -1.238 0.000
H7 2.451 0.261 0.879
H8 2.451 0.261 -0.879
H9 0.383 -1.146 0.874
H10 0.383 -1.146 -0.874
H11 -1.700 1.661 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51012.37303.60434.15571.08341.08251.08252.15732.15734.3365
C21.51011.42582.34412.68592.13332.14892.14891.08061.08063.2753
O32.37301.42581.31062.21873.31512.63532.63532.04772.04771.9699
C43.60432.34411.31061.17924.44433.88243.88242.61702.61701.0860
O54.15572.68592.21871.17924.79304.56374.56372.66112.66111.9990
H61.08342.13333.31514.44434.79301.75731.75732.49132.49135.2809
H71.08252.14892.63533.88244.56371.75731.75702.50153.05464.4682
H81.08252.14892.63533.88244.56371.75731.75703.05462.50154.4682
H92.15731.08062.04772.61702.66112.49132.50153.05461.74883.6033
H102.15731.08062.04772.61702.66112.49133.05462.50151.74883.6033
H114.33653.27531.96991.08601.99905.28094.46824.46823.60333.6033

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 107.822 C1 C2 H9 111.679
C1 C2 H10 111.679 C2 C1 H6 109.586
C2 C1 H7 110.885 C2 C1 H8 110.885
C2 O3 C4 117.819 O3 C2 H9 108.781
O3 C2 H10 108.781 O3 C4 O5 125.954
O3 C4 H11 110.212 O5 C4 H11 123.834
H6 C1 H7 108.458 H6 C1 H8 108.458
H7 C1 H8 108.498 H9 C2 H10 108.029
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -1.296      
2 C -0.273      
3 O -0.645      
4 C -0.056      
5 O -1.316      
6 H 0.273      
7 H 0.355      
8 H 0.355      
9 H 0.617      
10 H 0.617      
11 H 1.368      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.202 0.730 0.000 2.320
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.131 -5.261 0.000
y -5.261 -29.005 0.000
z 0.000 0.000 -29.291
Traceless
 xyz
x -4.983 -5.261 0.000
y -5.261 2.706 0.000
z 0.000 0.000 2.277
Polar
3z2-r24.554
x2-y2-5.126
xy-5.261
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.422 -0.149 0.000
y -0.149 6.181 0.000
z 0.000 0.000 5.097


<r2> (average value of r2) Å2
<r2> 134.333
(<r2>)1/2 11.590