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All results from a given calculation for C2H5I (Ethyl iodide)

using model chemistry: QCISD/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-311G*
 hartrees
Energy at 0K-6995.994033
Energy at 298.15K 
HF Energy-6995.475659
Nuclear repulsion energy213.286461
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 QCISD/6-311G*
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' 3118 2985 27.33      
2 A' 3106 2974 0.88      
3 A' 3040 2911 24.69      
4 A' 1528 1463 2.79      
5 A' 1511 1447 2.11      
6 A' 1451 1389 6.16      
7 A' 1290 1235 78.45      
8 A' 1093 1047 0.43      
9 A' 994 951 9.17      
10 A' 512 491 6.46      
11 A' 266 255 0.91      
12 A" 3175 3039 8.64      
13 A" 3135 3001 10.31      
14 A" 1519 1455 11.33      
15 A" 1288 1233 0.53      
16 A" 1032 988 0.68      
17 A" 761 729 5.66      
18 A" 272 260 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 14546.0 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 13926.3 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 QCISD/6-311G*
ABC
0.97387 0.09720 0.09143

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.611 -1.448 0.000
C2 -0.582 -2.395 0.000
I3 0.000 0.644 0.000
H4 1.232 -1.569 0.889
H5 1.232 -1.569 -0.889
H6 -0.222 -3.432 0.000
H7 -1.207 -2.249 0.887
H8 -1.207 -2.249 -0.887

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.52272.17971.09121.09122.15142.17482.1748
C21.52273.09392.18272.18271.09821.09431.0943
I32.17973.09392.68382.68384.08213.25713.2571
H41.09122.18272.68381.77822.52542.53173.0924
H51.09122.18272.68381.77822.52543.09242.5317
H62.15141.09824.08212.52542.52541.77681.7768
H72.17481.09433.25712.53173.09241.77681.7733
H82.17481.09433.25713.09242.53171.77681.7733

picture of Ethyl iodide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 109.270 C1 C2 H7 111.353
C1 C2 H8 111.353 C2 C1 I3 112.146
C2 C1 H4 112.185 C2 C1 H5 112.185
I3 C1 H4 105.374 I3 C1 H5 105.374
H4 C1 H5 109.133 H6 C2 H7 108.265
H6 C2 H8 108.265 H7 C2 H8 108.234
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability