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

using model chemistry: QCISD/cc-pVTZ-PP

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/cc-pVTZ-PP
 hartrees
Energy at 0K-373.938230
Energy at 298.15K 
HF Energy-373.339747
Nuclear repulsion energy121.205464
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/cc-pVTZ-PP
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' 3131 3131 23.28      
2 A' 3118 3118 0.16      
3 A' 3053 3053 22.49      
4 A' 1516 1516 1.24      
5 A' 1498 1498 1.09      
6 A' 1431 1431 3.64      
7 A' 1269 1269 70.12      
8 A' 1087 1087 0.12      
9 A' 990 990 7.64      
10 A' 537 537 5.02      
11 A' 263 263 0.52      
12 A" 3187 3187 5.48      
13 A" 3143 3143 8.97      
14 A" 1508 1508 9.18      
15 A" 1279 1279 0.21      
16 A" 1014 1014 0.36      
17 A" 756 756 3.79      
18 A" 264 264 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 14520.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14520.4 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/cc-pVTZ-PP
ABC
0.98112 0.09966 0.09363

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.610 -1.426 0.000
C2 -0.580 -2.367 0.000
I3 0.000 0.636 0.000
H4 1.228 -1.543 0.885
H5 1.228 -1.543 -0.885
H6 -0.228 -3.401 0.000
H7 -1.201 -2.217 0.882
H8 -1.201 -2.217 -0.882

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.51682.15021.08531.08532.14522.16372.1637
C21.51683.05822.17502.17501.09241.08901.0890
I32.15023.05822.65222.65224.04323.21833.2183
H41.08532.17502.65221.76912.52112.52063.0780
H51.08532.17502.65221.76912.52113.07802.5206
H62.14521.09244.04322.52112.52111.76831.7683
H72.16371.08903.21832.52063.07801.76831.7639
H82.16371.08903.21833.07802.52061.76831.7639

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 109.529 C1 C2 H7 111.209
C1 C2 H8 111.209 C2 C1 I3 111.860
C2 C1 H4 112.349 C2 C1 H5 112.349
I3 C1 H4 105.318 I3 C1 H5 105.318
H4 C1 H5 109.180 H6 C2 H7 108.316
H6 C2 H8 108.316 H7 C2 H8 108.168
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability