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

using model chemistry: wB97X-D/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3H 1A'
Energy calculated at wB97X-D/aug-cc-pVTZ
 hartrees
Energy at 0K-362.200463
Energy at 298.15K 
HF Energy-362.200463
Nuclear repulsion energy151.126867
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 wB97X-D/aug-cc-pVTZ
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' 3118 2982 0.00      
2 A' 3030 2899 0.00      
3 A' 1445 1382 0.00      
4 A' 1232 1179 0.00      
5 A' 588 563 0.00      
6 A' 530 507 0.00      
7 A" 3094 2960 44.33      
8 A" 1460 1397 4.35      
9 A" 717 686 89.37      
10 A" 185 177 7.84      
11 A" 116i 111i 0.00      
12 E' 3118 2983 27.24      
12 E' 3118 2983 27.20      
13 E' 3029 2898 12.99      
13 E' 3029 2898 13.02      
14 E' 1443 1381 0.73      
14 E' 1443 1381 0.72      
15 E' 1231 1178 46.78      
15 E' 1231 1178 46.81      
16 E' 759 726 162.86      
16 E' 759 726 162.86      
17 E' 652 623 7.62      
17 E' 652 623 7.61      
18 E' 162 155 4.64      
18 E' 162 155 4.62      
19 E" 3093 2959 0.00      
19 E" 3093 2959 0.00      
20 E" 1458 1395 0.00      
20 E" 1458 1395 0.00      
21 E" 557 533 0.00      
21 E" 557 533 0.00      
22 E" 117i 112i 0.00      
22 E" 117i 112i 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23026.9 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 22027.6 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 wB97X-D/aug-cc-pVTZ
ABC
0.16606 0.16606 0.08698

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/aug-cc-pVTZ

Point Group is C3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Al1 0.000 0.000 0.000
C2 0.000 1.961 0.000
C3 -1.698 -0.980 0.000
C4 1.698 -0.980 0.000
H5 -1.003 2.390 0.000
H6 -1.568 -2.064 0.000
H7 2.571 -0.326 0.000
H8 0.528 2.353 0.874
H9 0.528 2.353 -0.874
H10 -2.302 -0.719 0.874
H11 -2.302 -0.719 -0.874
H12 1.774 -1.634 0.874
H13 1.774 -1.634 -0.874

Atom - Atom Distances (Å)
  Al1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
Al11.96091.96091.96092.59192.59192.59192.56532.56532.56532.56532.56532.5653
C21.96093.39653.39651.09124.31943.44111.09381.09383.63973.63974.10294.1029
C31.96093.39653.39653.44111.09124.31944.10294.10291.09381.09383.63973.6397
C41.96093.39653.39654.31943.44111.09123.63973.63974.10294.10291.09381.0938
H52.59191.09123.44114.31944.48924.48921.76361.76363.48103.48104.96674.9667
H62.59194.31941.09123.44114.48924.48924.96674.96671.76361.76363.48103.4810
H72.59193.44114.31941.09124.48924.48923.48103.48104.96674.96671.76361.7636
H82.56531.09384.10293.63971.76364.96673.48101.74774.17754.52834.17754.5283
H92.56531.09384.10293.63971.76364.96673.48101.74774.52834.17754.52834.1775
H102.56533.63971.09384.10293.48101.76364.96674.17754.52831.74774.17754.5283
H112.56533.63971.09384.10293.48101.76364.96674.52834.17751.74774.52834.1775
H122.56534.10293.63971.09384.96673.48101.76364.17754.52834.17754.52831.7477
H132.56534.10293.63971.09384.96673.48101.76364.52834.17754.52834.17751.7477

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 113.139 Al1 C2 H8 111.025
Al1 C2 H9 111.025 Al1 C3 H6 113.139
Al1 C3 H10 111.026 Al1 C3 H11 111.026
Al1 C4 H7 113.139 Al1 C4 H12 111.025
Al1 C4 H13 111.025 C2 Al1 C3 120.000
C2 Al1 C4 120.000 C3 Al1 C4 120.000
H5 C2 H8 107.632 H5 C2 H9 107.632
H6 C3 H10 107.632 H6 C3 H11 107.632
H7 C4 H12 107.632 H7 C4 H13 107.632
H8 C2 H9 106.053 H10 C3 H11 106.053
H12 C4 H13 106.053
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Al 0.404      
2 C -0.789      
3 C -0.789      
4 C -0.789      
5 H 0.285      
6 H 0.285      
7 H 0.285      
8 H 0.185      
9 H 0.185      
10 H 0.185      
11 H 0.185      
12 H 0.185      
13 H 0.185      


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 -37.181 0.000 0.000
y 0.000 -37.181 0.000
z 0.000 0.000 -31.258
Traceless
 xyz
x -2.961 0.000 0.000
y 0.000 -2.961 0.000
z 0.000 0.000 5.923
Polar
3z2-r211.845
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 10.492 0.001 0.000
y 0.001 10.491 0.000
z 0.000 0.000 8.148


<r2> (average value of r2) Å2
<r2> 150.789
(<r2>)1/2 12.280