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

using model chemistry: B3LYP/CEP-121G

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 B3LYP/CEP-121G
 hartrees
Energy at 0K-52.442763
Energy at 298.15K-52.449776
HF Energy-52.442763
Nuclear repulsion energy97.303430
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 B3LYP/CEP-121G
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' 3092 3013 38.24      
2 A' 3079 3000 51.43      
3 A' 3029 2952 17.42      
4 A' 3004 2928 24.71      
5 A' 1641 1599 286.12      
6 A' 1529 1490 14.59      
7 A' 1515 1476 4.26      
8 A' 1442 1405 15.53      
9 A' 1396 1360 8.36      
10 A' 1376 1341 13.59      
11 A' 1149 1120 406.60      
12 A' 1131 1102 4.44      
13 A' 1022 996 14.90      
14 A' 804 784 15.34      
15 A' 741 722 1.72      
16 A' 360 351 6.21      
17 A' 206 201 8.55      
18 A" 3114 3034 63.19      
19 A" 3084 3005 1.84      
20 A" 1505 1467 8.25      
21 A" 1284 1251 0.53      
22 A" 1173 1143 6.54      
23 A" 995 970 0.56      
24 A" 813 792 1.06      
25 A" 328 320 32.58      
26 A" 217 212 2.61      
27 A" 48 47 0.86      

Unscaled Zero Point Vibrational Energy (zpe) 19537.9 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 19039.7 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 B3LYP/CEP-121G
ABC
0.57544 0.09100 0.08099

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.232 -0.262 0.000
C2 -0.739 -0.602 0.000
O3 0.000 0.702 0.000
C4 1.378 0.651 0.000
O5 2.058 -0.391 0.000
H6 -2.821 -1.188 0.000
H7 -2.499 0.320 0.889
H8 -2.499 0.320 -0.889
H9 -0.433 -1.165 -0.890
H10 -0.433 -1.165 0.890
H11 1.783 1.671 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.53132.43103.72334.29171.09801.09591.09592.20082.20084.4562
C21.53131.49872.46002.80482.16322.17732.17731.09651.09653.3954
O32.43101.49871.37872.33013.39572.68012.68012.11282.11282.0297
C43.72332.46001.37871.24484.58423.99153.99152.71472.71471.0973
O54.29172.80482.33011.24484.94374.69734.69732.75592.75592.0803
H61.09802.16323.39574.58424.94371.78041.78042.54872.54875.4200
H71.09592.17732.68013.99154.69731.78041.77853.10502.54474.5778
H81.09592.17732.68013.99154.69731.78041.77852.54473.10504.5778
H92.20081.09652.11282.71472.75592.54873.10502.54471.77993.7076
H102.20081.09652.11282.71472.75592.54872.54473.10501.77993.7076
H114.45623.39542.02971.09732.08035.42004.57784.57783.70763.7076

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 106.697 C1 C2 H9 112.713
C1 C2 H10 112.713 C2 C1 H6 109.613
C2 C1 H7 110.853 C2 C1 H8 110.853
C2 O3 C4 117.448 O3 C2 H9 107.996
O3 C2 H10 107.996 O3 C4 O5 125.214
O3 C4 H11 109.603 O5 C4 H11 125.184
H6 C1 H7 108.492 H6 C1 H8 108.492
H7 C1 H8 108.469 H9 C2 H10 108.510
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.451      
2 C -0.131      
3 O -0.192      
4 C 0.012      
5 O -0.191      
6 H 0.151      
7 H 0.165      
8 H 0.165      
9 H 0.167      
10 H 0.167      
11 H 0.137      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.253 0.430 0.000 2.294
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.817 5.966 0.000
y 5.966 -29.910 0.000
z 0.000 0.000 -29.673
Traceless
 xyz
x -4.025 5.966 0.000
y 5.966 1.835 0.000
z 0.000 0.000 2.191
Polar
3z2-r24.381
x2-y2-3.907
xy5.966
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.681 0.202 0.000
y 0.202 6.174 0.000
z 0.000 0.000 4.634


<r2> (average value of r2) Å2
<r2> 116.147
(<r2>)1/2 10.777