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

using model chemistry: BLYP/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 BLYP/cc-pVDZ
 hartrees
Energy at 0K-362.081208
Energy at 298.15K-362.088456
HF Energy-362.081208
Nuclear repulsion energy148.734423
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 BLYP/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' 3017 3022 0.00      
2 A' 2930 2934 0.00      
3 A' 1388 1390 0.00      
4 A' 1183 1185 0.00      
5 A' 584 585 0.00      
6 A' 485 486 0.00      
7 A" 2984 2989 45.93      
8 A" 1394 1396 1.33      
9 A" 699 700 88.11      
10 A" 177 177 4.25      
11 A" 51 51 0.04      
12 E' 3018 3023 29.82      
12 E' 3018 3023 29.83      
13 E' 2927 2932 15.53      
13 E' 2927 2932 15.53      
14 E' 1386 1388 0.34      
14 E' 1386 1388 0.34      
15 E' 1178 1180 13.33      
15 E' 1178 1180 13.32      
16 E' 736 738 148.28      
16 E' 736 738 148.28      
17 E' 614 615 18.40      
17 E' 614 615 18.40      
18 E' 164 164 3.31      
18 E' 164 164 3.31      
19 E" 2984 2989 0.00      
19 E" 2984 2989 0.00      
20 E" 1390 1392 0.00      
20 E" 1390 1392 0.00      
21 E" 541 542 0.00      
21 E" 541 542 0.00      
22 E" 22 22 0.00      
22 E" 22 22 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 22406.7 cm-1
Scaled (by 1.0016) Zero Point Vibrational Energy (zpe) 22442.6 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 BLYP/cc-pVDZ
ABC
0.16095 0.16095 0.08430

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/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 1.990 0.000
C3 -1.723 -0.995 0.000
C4 1.723 -0.995 0.000
H5 -1.014 2.443 0.000
H6 -1.609 -2.099 0.000
H7 2.622 -0.344 0.000
H8 0.544 2.387 0.887
H9 0.544 2.387 -0.887
H10 -2.340 -0.723 0.887
H11 -2.340 -0.723 -0.887
H12 1.796 -1.665 0.887
H13 1.796 -1.665 -0.887

Atom - Atom Distances (Å)
  Al1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
Al11.99001.99001.99002.64462.64462.64462.60432.60432.60432.60432.60432.6043
C21.99003.44683.44681.11004.39413.51021.11381.11383.69033.69034.16754.1675
C31.99003.44683.44683.51021.11004.39414.16754.16751.11381.11383.69033.6903
C41.99003.44683.44684.39413.51021.11003.69033.69034.16754.16751.11381.1138
H52.64461.11003.51024.39414.58054.58051.79321.79323.54453.54455.05465.0546
H62.64464.39411.11003.51024.58054.58055.05465.05461.79321.79323.54453.5445
H72.64463.51024.39411.11004.58054.58053.54453.54455.05465.05461.79321.7932
H82.60431.11384.16753.69031.79325.05463.54451.77394.24114.59714.24114.5971
H92.60431.11384.16753.69031.79325.05463.54451.77394.59714.24114.59714.2411
H102.60433.69031.11384.16753.54451.79325.05464.24114.59711.77394.24114.5971
H112.60433.69031.11384.16753.54451.79325.05464.59714.24111.77394.59714.2411
H122.60434.16753.69031.11385.05463.54451.79324.24114.59714.24114.59711.7739
H132.60434.16753.69031.11385.05463.54451.79324.59714.24114.59714.24111.7739

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 114.064 Al1 C2 H8 110.905
Al1 C2 H9 110.905 Al1 C3 H6 114.064
Al1 C3 H10 110.905 Al1 C3 H11 110.905
Al1 C4 H7 114.064 Al1 C4 H12 110.905
Al1 C4 H13 110.905 C2 Al1 C3 120.000
C2 Al1 C4 120.000 C3 Al1 C4 120.000
H5 C2 H8 107.485 H5 C2 H9 107.485
H6 C3 H10 107.485 H6 C3 H11 107.485
H7 C4 H12 107.485 H7 C4 H13 107.485
H8 C2 H9 105.563 H10 C3 H11 105.563
H12 C4 H13 105.563
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Al 0.336      
2 C -0.162      
3 C -0.162      
4 C -0.162      
5 H 0.015      
6 H 0.015      
7 H 0.015      
8 H 0.017      
9 H 0.017      
10 H 0.017      
11 H 0.017      
12 H 0.017      
13 H 0.017      


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 -36.754 0.000 0.000
y 0.000 -36.754 0.000
z 0.000 0.000 -31.956
Traceless
 xyz
x -2.399 0.000 0.000
y 0.000 -2.399 0.000
z 0.000 0.000 4.798
Polar
3z2-r29.596
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 9.902 0.000 0.000
y 0.000 9.902 0.000
z 0.000 0.000 7.377


<r2> (average value of r2) Å2
<r2> 154.914
(<r2>)1/2 12.446