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

using model chemistry: HF/daug-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 HF/daug-cc-pVTZ
 hartrees
Energy at 0K-360.831099
Energy at 298.15K-360.838758
HF Energy-360.831099
Nuclear repulsion energy150.620777
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/daug-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' 3197 2892 0.00      
2 A' 3121 2823 0.00      
3 A' 1562 1413 0.00      
4 A' 1340 1212 0.00      
5 A' 633 573 0.00      
6 A' 534 483 0.00      
7 A" 3169 2867 85.73      
8 A" 1567 1417 2.61      
9 A" 761 688 97.47      
10 A" 196 177 12.67      
11 A" 50 45 0.14      
12 E' 3198 2893 47.64      
12 E' 3198 2893 47.64      
13 E' 3119 2821 22.77      
13 E' 3119 2821 22.77      
14 E' 1561 1412 0.30      
14 E' 1561 1412 0.30      
15 E' 1338 1211 39.00      
15 E' 1338 1211 39.00      
16 E' 801 724 154.82      
16 E' 801 724 154.82      
17 E' 667 604 23.22      
17 E' 667 604 23.22      
18 E' 178 161 6.50      
18 E' 178 161 6.50      
19 E" 3168 2866 0.00      
19 E" 3168 2866 0.00      
20 E" 1566 1416 0.00      
20 E" 1566 1416 0.00      
21 E" 595 539 0.00      
21 E" 595 539 0.00      
22 E" 27 25 0.00      
22 E" 27 25 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24283.0 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 21966.4 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/daug-cc-pVTZ
ABC
0.16436 0.16436 0.08602

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/daug-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 1.973 0.000
C3 -1.709 -0.986 0.000
C4 1.709 -0.986 0.000
H5 -0.997 2.403 0.000
H6 -1.582 -2.064 0.000
H7 2.579 -0.338 0.000
H8 0.526 2.361 0.870
H9 0.526 2.361 -0.870
H10 -2.308 -0.725 0.870
H11 -2.308 -0.725 -0.870
H12 1.782 -1.636 0.870
H13 1.782 -1.636 -0.870

Atom - Atom Distances (Å)
  Al1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
Al11.97291.97291.97292.60112.60112.60112.57072.57072.57072.57072.57072.5707
C21.97293.41723.41721.08524.33633.46301.08841.08843.65533.65534.11784.1178
C31.97293.41723.41723.46301.08524.33634.11784.11781.08841.08843.65533.6553
C41.97293.41723.41724.33633.46301.08523.65533.65534.11784.11781.08841.0884
H52.60111.08523.46304.33634.50524.50521.75421.75423.50113.50114.97864.9786
H62.60114.33631.08523.46304.50524.50524.97864.97861.75421.75423.50113.5011
H72.60113.46304.33631.08524.50524.50523.50113.50114.97864.97861.75421.7542
H82.57071.08844.11783.65531.75424.97863.50111.74044.18974.53684.18974.5368
H92.57071.08844.11783.65531.75424.97863.50111.74044.53684.18974.53684.1897
H102.57073.65531.08844.11783.50111.75424.97864.18974.53681.74044.18974.5368
H112.57073.65531.08844.11783.50111.75424.97864.53684.18971.74044.53684.1897
H122.57074.11783.65531.08844.97863.50111.75424.18974.53684.18974.53681.7404
H132.57074.11783.65531.08844.97863.50111.75424.53684.18974.53684.18971.7404

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 113.322 Al1 C2 H8 110.890
Al1 C2 H9 110.890 Al1 C3 H6 113.322
Al1 C3 H10 110.890 Al1 C3 H11 110.890
Al1 C4 H7 113.322 Al1 C4 H12 110.890
Al1 C4 H13 110.890 C2 Al1 C3 120.000
C2 Al1 C4 120.000 C3 Al1 C4 120.000
H5 C2 H8 107.616 H5 C2 H9 107.616
H6 C3 H10 107.616 H6 C3 H11 107.616
H7 C4 H12 107.616 H7 C4 H13 107.616
H8 C2 H9 106.174 H10 C3 H11 106.174
H12 C4 H13 106.174
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Al -0.100      
2 C -1.138      
3 C -1.138      
4 C -1.138      
5 H 0.493      
6 H 0.493      
7 H 0.493      
8 H 0.340      
9 H 0.340      
10 H 0.340      
11 H 0.340      
12 H 0.340      
13 H 0.340      


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 -38.251 0.000 0.000
y 0.000 -38.251 0.000
z 0.000 0.000 -31.202
Traceless
 xyz
x -3.524 0.000 0.000
y 0.000 -3.524 0.000
z 0.000 0.000 7.048
Polar
3z2-r214.097
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 9.726 0.000 0.000
y 0.000 9.726 0.000
z 0.000 0.000 7.684


<r2> (average value of r2) Å2
<r2> 152.435
(<r2>)1/2 12.346