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

using model chemistry: B2PLYP/aug-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 B2PLYP/aug-cc-pVTZ
 hartrees
Energy at 0K-268.288252
Energy at 298.15K-268.295443
HF Energy-267.963801
Nuclear repulsion energy177.632498
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 B2PLYP/aug-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' 3136 3013 18.83      
2 A' 3080 2960 8.25      
3 A' 3072 2952 53.95      
4 A' 3063 2943 13.98      
5 A' 1767 1698 322.92      
6 A' 1531 1471 8.31      
7 A' 1513 1454 2.45      
8 A' 1435 1379 12.58      
9 A' 1405 1351 1.41      
10 A' 1400 1345 4.69      
11 A' 1210 1163 406.86      
12 A' 1142 1097 8.83      
13 A' 1037 996 20.56      
14 A' 857 824 14.29      
15 A' 785 755 1.10      
16 A' 381 366 5.04      
17 A' 226 218 7.36      
18 A" 3147 3024 31.01      
19 A" 3119 2998 2.04      
20 A" 1501 1443 6.26      
21 A" 1308 1257 1.28      
22 A" 1188 1142 3.86      
23 A" 1044 1004 0.01      
24 A" 818 786 0.61      
25 A" 347 333 21.04      
26 A" 235 226 2.21      
27 A" 64 62 0.72      

Unscaled Zero Point Vibrational Energy (zpe) 19904.2 cm-1
Scaled (by 0.961) Zero Point Vibrational Energy (zpe) 19128.0 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 B2PLYP/aug-cc-pVTZ
ABC
0.59846 0.09638 0.08566

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.178 -0.274 0.000
C2 -0.698 -0.571 0.000
O3 0.000 0.700 0.000
C4 1.337 0.629 0.000
O5 1.990 -0.383 0.000
H6 -2.737 -1.209 0.000
H7 -2.460 0.295 0.883
H8 -2.460 0.295 -0.883
H9 -0.390 -1.132 -0.880
H10 -0.390 -1.132 0.880
H11 1.752 1.641 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.50922.38613.62884.16971.08911.08821.08822.16932.16934.3722
C21.50921.45022.36202.69502.13642.15282.15281.08841.08843.3010
O32.38611.45021.33872.26593.33712.64522.64522.06992.06991.9889
C43.62882.36201.33871.20424.46903.91253.91252.61862.61861.0944
O54.16972.69502.26591.20424.79884.58754.58752.64642.64642.0377
H61.08912.13643.33714.46904.79881.76611.76612.50752.50755.3176
H71.08822.15282.64523.91254.58751.76611.76703.07092.51384.5097
H81.08822.15282.64523.91254.58751.76611.76702.51383.07094.5097
H92.16931.08842.06992.61862.64642.50753.07092.51381.76093.6132
H102.16931.08842.06992.61862.64642.50752.51383.07091.76093.6132
H114.37223.30101.98891.09442.03775.31764.50974.50973.61323.6132

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 107.449 C1 C2 H9 112.241
C1 C2 H10 112.241 C2 C1 H6 109.549
C2 C1 H7 110.913 C2 C1 H8 110.913
C2 O3 C4 115.705 O3 C2 H9 108.402
O3 C2 H10 108.402 O3 C4 O5 125.942
O3 C4 H11 109.253 O5 C4 H11 124.806
H6 C1 H7 108.415 H6 C1 H8 108.415
H7 C1 H8 108.562 H9 C2 H10 107.979
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.803      
2 C -0.042      
3 O -0.273      
4 C -0.157      
5 O -0.541      
6 H 0.262      
7 H 0.243      
8 H 0.243      
9 H 0.263      
10 H 0.263      
11 H 0.540      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.114 0.549 0.000 2.184
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.660 4.960 0.000
y 4.960 -29.860 0.000
z 0.000 0.000 -29.734
Traceless
 xyz
x -3.863 4.960 0.000
y 4.960 1.837 0.000
z 0.000 0.000 2.026
Polar
3z2-r24.052
x2-y2-3.800
xy4.960
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.516 0.191 0.000
y 0.191 6.820 0.000
z 0.000 0.000 5.467


<r2> (average value of r2) Å2
<r2> 136.057
(<r2>)1/2 11.664