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

using model chemistry: QCISD(T)/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(T)/cc-pVTZ-PP
 hartrees
Energy at 0K-373.960737
Energy at 298.15K 
HF Energy-373.339667
Nuclear repulsion energy120.983009
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(T)/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' 3112 3112        
2 A' 3099 3099        
3 A' 3034 3034        
4 A' 1502 1502        
5 A' 1480 1480        
6 A' 1414 1414        
7 A' 1250 1250        
8 A' 1075 1075        
9 A' 978 978        
10 A' 528 528        
11 A' 259 259        
12 A" 3167 3167        
13 A" 3126 3126        
14 A" 1493 1493        
15 A" 1264 1264        
16 A" 999 999        
17 A" 746 746        
18 A" 261 261        

Unscaled Zero Point Vibrational Energy (zpe) 14393.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14393.8 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(T)/cc-pVTZ-PP
ABC
0.97672 0.09932 0.09330

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.611 -1.431 0.000
C2 -0.582 -2.371 0.000
I3 0.000 0.637 0.000
H4 1.229 -1.546 0.887
H5 1.229 -1.546 -0.887
H6 -0.230 -3.407 0.000
H7 -1.203 -2.217 0.883
H8 -1.203 -2.217 -0.883

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.51902.15581.08711.08712.14792.16562.1656
C21.51903.06312.17862.17861.09401.09061.0906
I32.15583.06312.65762.65764.04993.22053.2205
H41.08712.17862.65761.77382.52562.52283.0820
H51.08712.17862.65761.77382.52563.08202.5228
H62.14791.09404.04992.52562.52561.77211.7721
H72.16561.09063.22052.52283.08201.77211.7667
H82.16561.09063.22053.08202.52281.77211.7667

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 109.501 C1 C2 H7 111.110
C1 C2 H8 111.110 C2 C1 I3 111.761
C2 C1 H4 112.373 C2 C1 H5 112.373
I3 C1 H4 105.261 I3 C1 H5 105.261
H4 C1 H5 109.339 H6 C2 H7 108.426
H6 C2 H8 108.426 H7 C2 H8 108.185
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability