return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B3LYP/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/SDD
 hartrees
Energy at 0K-90.632193
Energy at 298.15K 
HF Energy-90.632193
Nuclear repulsion energy59.515577
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 B3LYP/SDD
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' 3133 3012 42.50 83.98 0.19 0.32
2 A' 3120 2999 0.10 144.06 0.29 0.44
3 A' 3036 2918 26.32 227.68 0.09 0.17
4 A' 1523 1464 7.66 14.50 0.70 0.82
5 A' 1496 1438 3.57 14.39 0.66 0.80
6 A' 1443 1387 11.73 4.73 0.56 0.72
7 A' 1270 1221 81.79 17.26 0.45 0.62
8 A' 1079 1037 0.71 10.97 0.60 0.75
9 A' 993 955 30.04 6.36 0.66 0.80
10 A' 476 458 15.32 35.56 0.31 0.48
11 A' 253 243 2.65 7.02 0.57 0.72
12 A" 3210 3086 18.14 42.63 0.75 0.86
13 A" 3157 3034 17.07 70.03 0.75 0.86
14 A" 1507 1448 14.75 17.17 0.75 0.86
15 A" 1268 1219 2.80 7.45 0.75 0.86
16 A" 1015 975 0.20 6.48 0.75 0.86
17 A" 769 739 14.33 4.61 0.75 0.86
18 A" 252 242 0.12 0.26 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14498.4 cm-1
Scaled (by 0.9613) Zero Point Vibrational Energy (zpe) 13937.3 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 B3LYP/SDD
ABC
0.95953 0.09414 0.08862

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/SDD

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.618 -1.487 0.000
C2 -0.587 -2.428 0.000
I3 0.000 0.655 0.000
H4 1.235 -1.585 0.895
H5 1.235 -1.585 -0.895
H6 -0.231 -3.470 0.000
H7 -1.212 -2.282 0.888
H8 -1.212 -2.282 -0.888

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.52942.22911.09151.09152.15662.18372.1837
C21.52943.13822.19822.19821.10081.09521.0952
I32.22913.13822.70982.70984.13063.29853.2985
H41.09152.19822.70981.79072.54952.54373.1065
H51.09152.19822.70981.79072.54953.10652.5437
H62.15661.10084.13062.54952.54951.77801.7780
H72.18371.09523.29852.54373.10651.77801.7758
H82.18371.09523.29853.10652.54371.77801.7758

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 109.074 C1 C2 H7 111.545
C1 C2 H8 111.545 C2 C1 I3 111.877
C2 C1 H4 112.947 C2 C1 H5 112.947
I3 C1 H4 104.070 I3 C1 H5 104.070
H4 C1 H5 110.223 H6 C2 H7 108.117
H6 C2 H8 108.117 H7 C2 H8 108.325
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.635      
2 C -0.558      
3 I 0.004      
4 H 0.264      
5 H 0.264      
6 H 0.208      
7 H 0.226      
8 H 0.226      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.405 -2.333 0.000 2.368
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.290 -1.446 0.000
y -1.446 -29.737 0.000
z 0.000 0.000 -34.781
Traceless
 xyz
x -2.031 -1.446 0.000
y -1.446 4.798 0.000
z 0.000 0.000 -2.767
Polar
3z2-r2-5.535
x2-y2-4.553
xy-1.446
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.002 -0.951 0.000
y -0.951 9.885 0.000
z 0.000 0.000 3.402


<r2> (average value of r2) Å2
<r2> 113.272
(<r2>)1/2 10.643