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

using model chemistry: QCISD/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-376.192939
Energy at 298.15K 
HF Energy-375.339527
Nuclear repulsion energy121.473785
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/Def2TZVPP
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' 3134 3134 22.77      
2 A' 3121 3121 0.32      
3 A' 3055 3055 22.16      
4 A' 1515 1515 1.36      
5 A' 1496 1496 1.06      
6 A' 1434 1434 3.49      
7 A' 1265 1265 69.38      
8 A' 1085 1085 0.12      
9 A' 989 989 7.41      
10 A' 537 537 4.99      
11 A' 264 264 0.48      
12 A" 3191 3191 5.10      
13 A" 3145 3145 8.98      
14 A" 1507 1507 9.19      
15 A" 1279 1279 0.28      
16 A" 1012 1012 0.51      
17 A" 754 754 3.93      
18 A" 261 261 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 14521.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14521.6 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/Def2TZVPP
ABC
0.98305 0.10022 0.09414

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.609 -1.420 0.000
C2 -0.580 -2.362 0.000
I3 0.000 0.634 0.000
H4 1.226 -1.535 0.884
H5 1.226 -1.535 -0.884
H6 -0.226 -3.395 0.000
H7 -1.200 -2.212 0.882
H8 -1.200 -2.212 -0.882

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.51692.14151.08491.08492.14502.16312.1631
C21.51693.05132.17462.17461.09221.08891.0889
I32.14153.05132.64352.64354.03543.21203.2120
H41.08492.17462.64351.76902.52072.51943.0771
H51.08492.17462.64351.76902.52073.07712.5194
H62.14501.09224.03542.52072.52071.76851.7685
H72.16311.08893.21202.51943.07711.76851.7641
H82.16311.08893.21203.07712.51941.76851.7641

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 109.514 C1 C2 H7 111.158
C1 C2 H8 111.158 C2 C1 I3 111.898
C2 C1 H4 112.337 C2 C1 H5 112.337
I3 C1 H4 105.286 I3 C1 H5 105.286
H4 C1 H5 109.229 H6 C2 H7 108.357
H6 C2 H8 108.357 H7 C2 H8 108.209
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability