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

using model chemistry: wB97X-D/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-362.142674
Energy at 298.15K 
HF Energy-362.142674
Nuclear repulsion energy150.620807
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/cc-pVDZ
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' 3136 2987 0.00      
2 A' 3039 2895 0.00      
3 A' 1458 1389 0.00      
4 A' 1252 1193 0.00      
5 A' 593 565 0.00      
6 A' 517 493 0.00      
7 A" 3112 2964 50.14      
8 A" 1469 1400 13.43      
9 A" 731 697 99.03      
10 A" 181 172 8.29      
11 A" 98i 93i 0.01      
12 E' 3137 2988 29.39      
12 E' 3137 2988 29.41      
13 E' 3037 2894 19.69      
13 E' 3037 2894 19.63      
14 E' 1455 1386 2.76      
14 E' 1455 1386 2.75      
15 E' 1249 1190 63.48      
15 E' 1249 1190 63.49      
16 E' 767 731 161.79      
16 E' 767 731 161.65      
17 E' 644 613 13.21      
17 E' 644 613 13.19      
18 E' 161 154 4.70      
18 E' 161 154 4.68      
19 E" 3112 2964 0.00      
19 E" 3112 2964 0.00      
20 E" 1469 1399 0.00      
20 E" 1469 1399 0.00      
21 E" 565 538 0.00      
21 E" 565 538 0.00      
22 E" 99i 95i 0.00      
22 E" 99i 95i 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23190.8 cm-1
Scaled (by 0.9526) Zero Point Vibrational Energy (zpe) 22091.6 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/cc-pVDZ
ABC
0.16498 0.16498 0.08642

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

Point Group is C3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Al1 0.000 0.000 0.000
C2 0.000 1.967 0.000
C3 -1.704 -0.984 0.000
C4 1.704 -0.984 0.000
H5 -1.008 2.397 0.000
H6 -1.572 -2.071 0.000
H7 2.580 -0.325 0.000
H8 0.529 2.362 0.877
H9 0.529 2.362 -0.877
H10 -2.310 -0.723 0.877
H11 -2.310 -0.723 -0.877
H12 1.781 -1.640 0.877
H13 1.781 -1.640 -0.877

Atom - Atom Distances (Å)
  Al1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
Al11.96741.96741.96742.60002.60002.60002.57482.57482.57482.57482.57482.5748
C21.96743.40773.40771.09564.33373.45121.09811.09813.65293.65294.11734.1173
C31.96743.40773.40773.45121.09564.33374.11734.11731.09811.09813.65293.6529
C41.96743.40773.40774.33373.45121.09563.65293.65294.11734.11731.09811.0981
H52.60001.09563.45124.33374.50344.50341.77051.77053.49223.49224.98394.9839
H62.60004.33371.09563.45124.50344.50344.98394.98391.77051.77053.49223.4922
H72.60003.45124.33371.09564.50344.50343.49223.49224.98394.98391.77051.7705
H82.57481.09814.11733.65291.77054.98393.49221.75454.19294.54524.19294.5452
H92.57481.09814.11733.65291.77054.98393.49221.75454.54524.19294.54524.1929
H102.57483.65291.09814.11733.49221.77054.98394.19294.54521.75454.19294.5452
H112.57483.65291.09814.11733.49221.77054.98394.54524.19291.75454.54524.1929
H122.57484.11733.65291.09814.98393.49221.77054.19294.54524.19294.54521.7545
H132.57484.11733.65291.09814.98393.49221.77054.54524.19294.54524.19291.7545

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 113.066 Al1 C2 H8 111.068
Al1 C2 H9 111.068 Al1 C3 H6 113.066
Al1 C3 H10 111.068 Al1 C3 H11 111.068
Al1 C4 H7 113.066 Al1 C4 H12 111.068
Al1 C4 H13 111.068 C2 Al1 C3 120.000
C2 Al1 C4 120.000 C3 Al1 C4 120.000
H5 C2 H8 107.625 H5 C2 H9 107.625
H6 C3 H10 107.625 H6 C3 H11 107.625
H7 C4 H12 107.625 H7 C4 H13 107.625
H8 C2 H9 106.056 H10 C3 H11 106.056
H12 C4 H13 106.056
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Al 0.941      
2 C -0.806      
3 C -0.806      
4 C -0.806      
5 H 0.167      
6 H 0.167      
7 H 0.167      
8 H 0.163      
9 H 0.163      
10 H 0.163      
11 H 0.163      
12 H 0.163      
13 H 0.163      


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 -37.410 0.000 0.000
y 0.000 -37.410 0.000
z 0.000 0.000 -31.275
Traceless
 xyz
x -3.067 0.000 0.000
y 0.000 -3.067 0.000
z 0.000 0.000 6.135
Polar
3z2-r212.269
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 9.832 0.001 0.000
y 0.001 9.831 0.000
z 0.000 0.000 7.237


<r2> (average value of r2) Å2
<r2> 151.737
(<r2>)1/2 12.318