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

using model chemistry: M06-2X/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3H 1A'
Energy calculated at M06-2X/3-21G*
 hartrees
Energy at 0K-360.147705
Energy at 298.15K-360.155897
HF Energy-360.147705
Nuclear repulsion energy150.784490
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 M06-2X/3-21G*
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' 3141 2975 0.00      
2 A' 3030 2870 0.00      
3 A' 1529 1448 0.00      
4 A' 1312 1243 0.00      
5 A' 640 606 0.00      
6 A' 534 506 0.00      
7 A" 3088 2925 26.54      
8 A" 1535 1454 10.82      
9 A" 779 738 148.96      
10 A" 195 185 5.80      
11 A" 119 113 0.56      
12 E' 3141 2975 15.87      
12 E' 3141 2975 15.84      
13 E' 3029 2869 2.95      
13 E' 3029 2869 2.95      
14 E' 1526 1445 2.10      
14 E' 1526 1445 2.12      
15 E' 1310 1241 72.25      
15 E' 1310 1241 72.30      
16 E' 817 774 183.85      
16 E' 817 774 185.23      
17 E' 672 636 12.30      
17 E' 672 636 12.39      
18 E' 173 164 3.01      
18 E' 173 164 3.06      
19 E" 3088 2925 0.00      
19 E" 3088 2925 0.00      
20 E" 1534 1453 0.00      
20 E" 1534 1453 0.00      
21 E" 607 575 0.00      
21 E" 607 575 0.00      
22 E" 139 132 0.00      
22 E" 139 132 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23985.1 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 22718.7 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 M06-2X/3-21G*
ABC
0.16544 0.16544 0.08671

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/3-21G*

Point Group is C3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Al1 0.000 0.000 0.000
C2 0.000 1.964 0.000
C3 -1.701 -0.982 0.000
C4 1.701 -0.982 0.000
H5 -1.010 2.390 0.000
H6 -1.564 -2.070 0.000
H7 2.575 -0.320 0.000
H8 0.532 2.351 0.881
H9 0.532 2.351 -0.881
H10 -2.302 -0.715 0.881
H11 -2.302 -0.715 -0.881
H12 1.770 -1.637 0.881
H13 1.770 -1.637 -0.881

Atom - Atom Distances (Å)
  Al1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
Al11.96441.96441.96442.59442.59442.59442.56652.56652.56652.56652.56652.5665
C21.96443.40243.40241.09594.32673.44201.09941.09943.64043.64044.10804.1080
C31.96443.40243.40243.44201.09594.32674.10804.10801.09941.09943.64043.6404
C41.96443.40243.40244.32673.44201.09593.64043.64044.10804.10801.09941.0994
H52.59441.09593.44204.32674.49364.49361.77661.77663.47583.47584.97144.9714
H62.59444.32671.09593.44204.49364.49364.97144.97141.77661.77663.47583.4758
H72.59443.44204.32671.09594.49364.49363.47583.47584.97144.97141.77661.7766
H82.56651.09944.10803.64041.77664.97143.47581.76164.17534.53174.17534.5317
H92.56651.09944.10803.64041.77664.97143.47581.76164.53174.17534.53174.1753
H102.56653.64041.09944.10803.47581.77664.97144.17534.53171.76164.17534.5317
H112.56653.64041.09944.10803.47581.77664.97144.53174.17531.76164.53174.1753
H122.56654.10803.64041.09944.97143.47581.77664.17534.53174.17534.53171.7616
H132.56654.10803.64041.09944.97143.47581.77664.53174.17534.53174.17531.7616

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 112.833 Al1 C2 H8 110.592
Al1 C2 H9 110.592 Al1 C3 H6 112.833
Al1 C3 H10 110.592 Al1 C3 H11 110.592
Al1 C4 H7 112.833 Al1 C4 H12 110.592
Al1 C4 H13 110.592 C2 Al1 C3 120.000
C2 Al1 C4 120.000 C3 Al1 C4 120.000
H5 C2 H8 108.047 H5 C2 H9 108.047
H6 C3 H10 108.047 H6 C3 H11 108.047
H7 C4 H12 108.047 H7 C4 H13 108.047
H8 C2 H9 106.479 H10 C3 H11 106.479
H12 C4 H13 106.479
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Al 0.943      
2 C -0.914      
3 C -0.914      
4 C -0.914      
5 H 0.201      
6 H 0.201      
7 H 0.201      
8 H 0.199      
9 H 0.199      
10 H 0.199      
11 H 0.199      
12 H 0.199      
13 H 0.199      


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 -35.971 0.000 0.000
y 0.000 -35.971 0.000
z 0.000 0.000 -30.988
Traceless
 xyz
x -2.491 0.000 0.000
y 0.000 -2.491 0.000
z 0.000 0.000 4.983
Polar
3z2-r29.965
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 7.926 -0.001 0.000
y -0.001 7.871 0.000
z 0.000 0.000 6.238


<r2> (average value of r2) Å2
<r2> 150.601
(<r2>)1/2 12.272