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

using model chemistry: B3PW91/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 B3PW91/cc-pVTZ
 hartrees
Energy at 0K-268.380858
Energy at 298.15K-268.388018
HF Energy-268.380858
Nuclear repulsion energy178.011275
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 B3PW91/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' 3124 3004 18.71      
2 A' 3059 2941 12.06      
3 A' 3048 2931 13.23      
4 A' 3031 2915 65.51      
5 A' 1816 1746 312.59      
6 A' 1512 1454 8.08      
7 A' 1492 1434 2.46      
8 A' 1419 1365 13.05      
9 A' 1396 1342 1.32      
10 A' 1388 1334 0.90      
11 A' 1223 1176 395.82      
12 A' 1134 1090 9.61      
13 A' 1039 1000 22.50      
14 A' 861 828 10.84      
15 A' 794 764 2.06      
16 A' 380 365 5.64      
17 A' 224 215 7.09      
18 A" 3131 3010 30.15      
19 A" 3097 2978 4.90      
20 A" 1479 1422 6.76      
21 A" 1295 1245 1.34      
22 A" 1175 1130 4.10      
23 A" 1043 1003 0.00      
24 A" 807 776 1.11      
25 A" 349 336 19.94      
26 A" 230 221 1.86      
27 A" 55 53 0.76      

Unscaled Zero Point Vibrational Energy (zpe) 19800.3 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 19040.0 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 B3PW91/cc-pVTZ
ABC
0.60313 0.09666 0.08598

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.174 -0.282 0.000
C2 -0.694 -0.568 0.000
O3 0.000 0.697 0.000
C4 1.332 0.629 0.000
O5 1.988 -0.373 0.000
H6 -2.730 -1.221 0.000
H7 -2.463 0.286 0.885
H8 -2.463 0.286 -0.885
H9 -0.385 -1.134 -0.881
H10 -0.385 -1.134 0.881
H11 1.743 1.649 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.50712.38433.62224.16331.09121.09051.09052.16812.16814.3669
C21.50711.44292.35332.68962.13752.15452.15451.09141.09143.2945
O32.38431.44291.33332.25793.33612.64942.64942.06782.06781.9858
C43.62222.35331.33331.19854.46303.91183.91182.61392.61391.0993
O54.16332.68962.25791.19854.79354.58644.58642.64352.64352.0368
H61.09122.13753.33614.46304.79351.76811.76812.50572.50575.3141
H71.09052.15452.64943.91184.58641.76811.76933.07432.51704.5090
H81.09052.15452.64943.91184.58641.76811.76932.51703.07434.5090
H92.16811.09142.06782.61392.64352.50573.07432.51701.76103.6123
H102.16811.09142.06782.61392.64352.50572.51703.07431.76103.6123
H114.36693.29451.98581.09932.03685.31414.50904.50903.61233.6123

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 107.828 C1 C2 H9 112.108
C1 C2 H10 112.108 C2 C1 H6 109.668
C2 C1 H7 111.060 C2 C1 H8 111.060
C2 O3 C4 115.862 O3 C2 H9 108.566
O3 C2 H10 108.566 O3 C4 O5 126.126
O3 C4 H11 109.067 O5 C4 H11 124.807
H6 C1 H7 108.269 H6 C1 H8 108.269
H7 C1 H8 108.424 H9 C2 H10 107.562
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.261      
2 C 0.030      
3 O -0.208      
4 C 0.227      
5 O -0.308      
6 H 0.090      
7 H 0.096      
8 H 0.096      
9 H 0.088      
10 H 0.088      
11 H 0.063      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.076 0.557 0.000 2.150
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.024 4.725 0.000
y 4.725 -29.163 0.000
z 0.000 0.000 -29.192
Traceless
 xyz
x -3.846 4.725 0.000
y 4.725 1.945 0.000
z 0.000 0.000 1.901
Polar
3z2-r23.803
x2-y2-3.861
xy4.725
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.875 0.272 0.000
y 0.272 6.323 0.000
z 0.000 0.000 4.968


<r2> (average value of r2) Å2
<r2> 135.313
(<r2>)1/2 11.632