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All results from a given calculation for SiH(CH3)3 (trimethylsilane)

using model chemistry: HSEh1PBE/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at HSEh1PBE/cc-pVTZ
 hartrees
Energy at 0K-409.663893
Energy at 298.15K-409.673508
HF Energy-409.663893
Nuclear repulsion energy174.847844
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 HSEh1PBE/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 A1 3126 3004 26.96      
2 A1 3045 2927 2.82      
3 A1 2171 2086 155.37      
4 A1 1467 1410 9.56      
5 A1 1285 1235 5.79      
6 A1 872 838 62.54      
7 A1 621 597 1.76      
8 A1 238 229 1.38      
9 A2 3130 3008 0.00      
10 A2 1445 1389 0.00      
11 A2 682 655 0.00      
12 A2 148 142 0.00      
13 E 3130 3008 15.89      
13 E 3130 3008 15.88      
14 E 3124 3003 1.19      
14 E 3124 3003 1.19      
15 E 3045 2926 6.58      
15 E 3045 2926 6.58      
16 E 1459 1402 2.98      
16 E 1459 1402 2.98      
17 E 1449 1393 0.10      
17 E 1449 1393 0.10      
18 E 1275 1226 33.59      
18 E 1275 1226 33.57      
19 E 912 876 159.62      
19 E 912 876 159.63      
20 E 851 818 15.98      
20 E 851 818 15.97      
21 E 713 685 12.48      
21 E 713 685 12.48      
22 E 616 592 8.82      
22 E 616 592 8.82      
23 E 202 194 0.73      
23 E 202 194 0.73      
24 E 160 154 0.00      
24 E 160 154 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 26050.5 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 25037.2 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 HSEh1PBE/cc-pVTZ
ABC
0.17657 0.17657 0.10414

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.374
H2 0.000 0.000 1.872
C3 0.000 1.784 -0.222
C4 1.545 -0.892 -0.222
C5 -1.545 -0.892 -0.222
H6 0.000 1.831 -1.313
H7 1.586 -0.916 -1.313
H8 -1.586 -0.916 -1.313
H9 -0.882 2.318 0.136
H10 0.882 2.318 0.136
H11 2.448 -0.395 0.136
H12 1.566 -1.923 0.136
H13 -1.566 -1.923 0.136
H14 -2.448 -0.395 0.136

Atom - Atom Distances (Å)
  Si1 H2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13 H14
Si11.49721.88081.88081.88082.49032.49032.49032.49152.49152.49152.49152.49152.4915
H21.49722.75032.75032.75033.67383.67383.67383.02683.02683.02683.02683.02683.0268
C31.88082.75033.08963.08961.09253.31553.31551.09181.09183.29694.04004.04003.2969
C41.88082.75033.08963.08963.31551.09253.31554.04003.29691.09181.09183.29694.0400
C51.88082.75033.08963.08963.31553.31551.09253.29694.04004.04003.29691.09181.0918
H62.49033.67381.09253.31553.31553.17163.17161.76561.76563.61284.31844.31843.6128
H72.49033.67383.31551.09253.31553.17163.17164.31843.61281.76561.76563.61284.3184
H82.49033.67383.31553.31551.09253.17163.17163.61284.31844.31843.61281.76561.7656
H92.49153.02681.09184.04003.29691.76564.31843.61281.76464.29564.89694.29563.1324
H102.49153.02681.09183.29694.04001.76563.61284.31841.76463.13244.29564.89694.2956
H112.49153.02683.29691.09184.04003.61281.76564.31844.29563.13241.76464.29564.8969
H122.49153.02684.04001.09183.29694.31841.76563.61284.89694.29561.76463.13244.2956
H132.49153.02684.04003.29691.09184.31843.61281.76564.29564.89694.29563.13241.7646
H142.49153.02683.29694.04001.09183.61284.31841.76563.13244.29564.89694.29561.7646

picture of trimethylsilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Si1 C3 H6 110.968 Si1 C3 H9 111.093
Si1 C3 H10 111.093 Si1 C4 H7 110.968
Si1 C4 H11 111.093 Si1 C4 H12 111.093
Si1 C5 H8 110.968 Si1 C5 H13 111.093
Si1 C5 H14 111.093 H2 Si1 C3 108.484
H2 Si1 C4 108.484 H2 Si1 C5 108.484
C3 Si1 C4 110.440 C3 Si1 C5 110.440
C4 Si1 C5 110.440 H6 C3 H9 107.860
H6 C3 H10 107.860 H7 C4 H11 107.860
H7 C4 H12 107.860 H8 C5 H13 107.860
H8 C5 H14 107.860 H9 C3 H10 107.818
H11 C4 H12 107.818 H13 C5 H14 107.818
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.319      
2 H -0.056      
3 C -0.389      
4 C -0.389      
5 C -0.389      
6 H 0.099      
7 H 0.099      
8 H 0.099      
9 H 0.101      
10 H 0.101      
11 H 0.101      
12 H 0.101      
13 H 0.101      
14 H 0.101      


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 -0.602 0.602
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.350 0.000 0.000
y 0.000 -35.350 0.000
z 0.000 0.000 -36.508
Traceless
 xyz
x 0.579 0.000 0.000
y 0.000 0.579 0.000
z 0.000 0.000 -1.157
Polar
3z2-r2-2.314
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 9.760 0.000 0.000
y 0.000 9.761 -0.000
z 0.000 -0.000 8.647


<r2> (average value of r2) Å2
<r2> 138.196
(<r2>)1/2 11.756