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All results from a given calculation for Al(CH3)3 (trimethyl aluminum)

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3H 1A'
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-360.830221
Energy at 298.15K-360.837885
HF Energy-360.830221
Nuclear repulsion energy150.771346
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 HF/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' 3200 2901 0.00      
2 A' 3124 2831 0.00      
3 A' 1562 1415 0.00      
4 A' 1343 1217 0.00      
5 A' 631 572 0.00      
6 A' 533 483 0.00      
7 A" 3172 2875 85.53      
8 A" 1566 1420 2.71      
9 A" 758 687 99.65      
10 A" 195 177 12.79      
11 A" 52 47 0.12      
12 E' 3201 2902 46.78      
12 E' 3201 2902 46.78      
13 E' 3122 2829 21.85      
13 E' 3122 2829 21.85      
14 E' 1560 1414 0.31      
14 E' 1560 1414 0.31      
15 E' 1341 1215 39.37      
15 E' 1341 1215 39.37      
16 E' 800 725 156.00      
16 E' 800 725 156.00      
17 E' 666 603 23.57      
17 E' 666 603 23.57      
18 E' 178 161 6.27      
18 E' 178 161 6.27      
19 E" 3171 2874 0.00      
19 E" 3171 2874 0.00      
20 E" 1565 1419 0.00      
20 E" 1565 1419 0.00      
21 E" 592 537 0.00      
21 E" 592 537 0.00      
22 E" 28 25 0.00      
22 E" 28 25 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24291.2 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 22017.5 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 HF/Def2TZVPP
ABC
0.16476 0.16476 0.08624

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

Point Group is C3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Al1 0.000 0.000 0.000
C2 0.000 1.969 0.000
C3 -1.705 -0.985 0.000
C4 1.705 -0.985 0.000
H5 -0.998 2.397 0.000
H6 -1.577 -2.062 0.000
H7 2.575 -0.334 0.000
H8 0.524 2.361 0.870
H9 0.524 2.361 -0.870
H10 -2.306 -0.726 0.870
H11 -2.306 -0.726 -0.870
H12 1.782 -1.634 0.870
H13 1.782 -1.634 -0.870

Atom - Atom Distances (Å)
  Al1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
Al11.96921.96921.96922.59622.59622.59622.56972.56972.56972.56972.56972.5697
C21.96923.41073.41071.08544.32903.45471.08831.08833.65273.65274.11304.1130
C31.96923.41073.41073.45471.08544.32904.11304.11301.08831.08833.65273.6527
C41.96923.41073.41074.32903.45471.08543.65273.65274.11304.11301.08831.0883
H52.59621.08543.45474.32904.49674.49671.75311.75313.49633.49634.97324.9732
H62.59624.32901.08543.45474.49674.49674.97324.97321.75311.75313.49633.4963
H72.59623.45474.32901.08544.49674.49673.49633.49634.97324.97321.75311.7531
H82.56971.08834.11303.65271.75314.97323.49631.73984.18814.53514.18814.5351
H92.56971.08834.11303.65271.75314.97323.49631.73984.53514.18814.53514.1881
H102.56973.65271.08834.11303.49631.75314.97324.18814.53511.73984.18814.5351
H112.56973.65271.08834.11303.49631.75314.97324.53514.18811.73984.53514.1881
H122.56974.11303.65271.08834.97323.49631.75314.18814.53514.18814.53511.7398
H132.56974.11303.65271.08834.97323.49631.75314.53514.18814.53514.18811.7398

picture of trimethyl aluminum state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Al1 C2 H5 113.205 Al1 C2 H8 111.074
Al1 C2 H9 111.074 Al1 C3 H6 113.205
Al1 C3 H10 111.073 Al1 C3 H11 111.073
Al1 C4 H7 113.205 Al1 C4 H12 111.074
Al1 C4 H13 111.074 C2 Al1 C3 120.000
C2 Al1 C4 120.000 C3 Al1 C4 120.000
H5 C2 H8 107.511 H5 C2 H9 107.511
H6 C3 H10 107.511 H6 C3 H11 107.511
H7 C4 H12 107.511 H7 C4 H13 107.511
H8 C2 H9 106.123 H10 C3 H11 106.123
H12 C4 H13 106.123
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Al 0.863      
2 C -0.467      
3 C -0.467      
4 C -0.467      
5 H 0.061      
6 H 0.061      
7 H 0.061      
8 H 0.059      
9 H 0.059      
10 H 0.059      
11 H 0.059      
12 H 0.059      
13 H 0.059      


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


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.228 0.000 0.000
y 0.000 -38.228 0.000
z 0.000 0.000 -31.186
Traceless
 xyz
x -3.521 0.000 0.000
y 0.000 -3.521 0.000
z 0.000 0.000 7.042
Polar
3z2-r214.083
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.383 0.000 0.000
y 0.000 9.383 0.000
z 0.000 0.000 7.477


<r2> (average value of r2) Å2
<r2> 152.130
(<r2>)1/2 12.334