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

using model chemistry: B3PW91/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 B3PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-268.316547
Energy at 298.15K-268.323692
HF Energy-268.316547
Nuclear repulsion energy177.319507
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/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' 3138 3027 18.86      
2 A' 3071 2963 11.10      
3 A' 3054 2946 41.97      
4 A' 3053 2945 31.16      
5 A' 1798 1734 336.54      
6 A' 1488 1435 8.41      
7 A' 1468 1416 2.12      
8 A' 1406 1356 13.68      
9 A' 1379 1330 1.52      
10 A' 1364 1315 0.37      
11 A' 1218 1175 387.66      
12 A' 1129 1089 7.47      
13 A' 1041 1004 23.65      
14 A' 858 827 10.42      
15 A' 786 759 1.72      
16 A' 377 364 5.48      
17 A' 223 215 7.63      
18 A" 3147 3036 31.77      
19 A" 3117 3007 3.62      
20 A" 1456 1404 6.67      
21 A" 1280 1235 1.30      
22 A" 1163 1122 3.74      
23 A" 1033 997 0.02      
24 A" 801 773 1.02      
25 A" 348 336 20.66      
26 A" 230 222 2.03      
27 A" 58 56 0.81      

Unscaled Zero Point Vibrational Energy (zpe) 19741.7 cm-1
Scaled (by 0.9646) Zero Point Vibrational Energy (zpe) 19042.9 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 B3PW91/aug-cc-pVDZ
ABC
0.59610 0.09616 0.08548

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.180 -0.279 0.000
C2 -0.697 -0.568 0.000
O3 0.000 0.701 0.000
C4 1.336 0.631 0.000
O5 1.992 -0.381 0.000
H6 -2.736 -1.226 0.000
H7 -2.472 0.291 0.891
H8 -2.472 0.291 -0.891
H9 -0.385 -1.135 -0.887
H10 -0.385 -1.135 0.887
H11 1.755 1.653 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51082.39013.63194.17361.09841.09781.09782.17782.17784.3842
C21.51081.44782.36042.69612.14252.16382.16381.09831.09833.3090
O32.39011.44781.33792.26713.34662.65902.65902.07512.07511.9971
C43.63192.36041.33791.20604.47573.92523.92522.62072.62071.1050
O54.17362.69612.26711.20604.80354.60144.60142.64722.64722.0479
H61.09842.14253.34664.47574.80351.78011.78012.51472.51475.3353
H71.09782.16382.65903.92524.60141.78011.78273.09082.52784.5294
H81.09782.16382.65903.92524.60141.78011.78272.52783.09084.5294
H92.17781.09832.07512.62072.64722.51473.09082.52781.77463.6254
H102.17781.09832.07512.62072.64722.51472.52783.09081.77463.6254
H114.38423.30901.99711.10502.04795.33534.52944.52943.62543.6254

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 107.753 C1 C2 H9 112.202
C1 C2 H10 112.202 C2 C1 H6 109.382
C2 C1 H7 111.108 C2 C1 H8 111.108
C2 O3 C4 115.794 O3 C2 H9 108.392
O3 C2 H10 108.392 O3 C4 O5 125.964
O3 C4 H11 109.309 O5 C4 H11 124.727
H6 C1 H7 108.292 H6 C1 H8 108.292
H7 C1 H8 108.573 H9 C2 H10 107.778
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.399      
2 C 0.916      
3 O -0.404      
4 C 0.679      
5 O -0.411      
6 H -0.089      
7 H -0.114      
8 H -0.114      
9 H -0.291      
10 H -0.291      
11 H -0.280      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.159 0.577 0.000 2.234
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.416 4.954 0.000
y 4.954 -29.529 0.000
z 0.000 0.000 -29.434
Traceless
 xyz
x -3.934 4.954 0.000
y 4.954 1.896 0.000
z 0.000 0.000 2.038
Polar
3z2-r24.077
x2-y2-3.887
xy4.954
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.557 0.221 0.000
y 0.221 6.844 0.000
z 0.000 0.000 5.463


<r2> (average value of r2) Å2
<r2> 136.240
(<r2>)1/2 11.672