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

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 C3V 1A1
Energy calculated at wB97X-D/cc-pVDZ
 hartrees
Energy at 0K-409.823846
Energy at 298.15K-409.833273
HF Energy-409.823846
Nuclear repulsion energy174.581860
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 A1 3149 2999 36.44      
2 A1 3061 2916 4.12      
3 A1 2181 2077 201.98      
4 A1 1484 1414 16.46      
5 A1 1317 1255 11.72      
6 A1 884 842 66.48      
7 A1 633 603 1.74      
8 A1 231 220 2.11      
9 A2 3152 3003 0.00      
10 A2 1459 1389 0.00      
11 A2 696 663 0.00      
12 A2 92 87 0.00      
13 E 3153 3003 20.71      
13 E 3153 3003 20.76      
14 E 3147 2998 2.24      
14 E 3147 2998 2.24      
15 E 3061 2916 12.43      
15 E 3061 2916 12.44      
16 E 1472 1403 7.77      
16 E 1472 1403 7.77      
17 E 1466 1397 0.08      
17 E 1466 1397 0.08      
18 E 1308 1246 51.24      
18 E 1308 1246 51.21      
19 E 931 887 182.99      
19 E 931 887 182.89      
20 E 864 823 9.30      
20 E 864 823 9.23      
21 E 726 691 11.32      
21 E 726 691 11.36      
22 E 621 592 9.63      
22 E 621 592 9.65      
23 E 204 194 1.11      
23 E 203 194 1.10      
24 E 119 114 0.00      
24 E 119 114 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 26241.8 cm-1
Scaled (by 0.9526) Zero Point Vibrational Energy (zpe) 24997.9 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
0.17605 0.17605 0.10410

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.327
H2 0.000 0.000 1.839
C3 0.000 1.546 -0.200
C4 1.339 -0.773 -0.200
C5 -1.339 -0.773 -0.200
H6 0.000 1.560 -1.242
H7 1.351 -0.780 -1.242
H8 -1.351 -0.780 -1.242
H9 -0.854 2.045 0.151
H10 0.854 2.045 0.151
H11 2.198 -0.283 0.151
H12 1.344 -1.762 0.151
H13 -1.344 -1.762 0.151
H14 -2.198 -0.283 0.151

Atom - Atom Distances (Å)
  Si1 H2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13 H14
Si11.51241.63341.63341.63342.21232.21232.21232.22302.22302.22302.22302.22302.2230
H21.51242.55892.55892.55893.45363.45363.45362.78592.78592.78592.78592.78592.7859
C31.63342.55892.67812.67811.04262.88472.88471.04921.04922.88083.58803.58802.8808
C41.63342.55892.67812.67812.88471.04262.88473.58802.88081.04921.04922.88083.5880
C51.63342.55892.67812.67812.88472.88471.04262.88083.58803.58802.88081.04921.0492
H62.21233.45361.04262.88472.88472.70132.70131.70451.70453.18843.84453.84453.1884
H72.21233.45362.88471.04262.88472.70132.70133.84453.18841.70451.70453.18843.8445
H82.21233.45362.88472.88471.04262.70132.70133.18843.84453.84453.18841.70451.7045
H92.22302.78591.04923.58802.88081.70453.84453.18841.70803.83834.39593.83832.6879
H102.22302.78591.04922.88083.58801.70453.18843.84451.70802.68793.83834.39593.8383
H112.22302.78592.88081.04923.58803.18841.70453.84453.83832.68791.70803.83834.3959
H122.22302.78593.58801.04922.88083.84451.70453.18844.39593.83831.70802.68793.8383
H132.22302.78593.58802.88081.04923.84453.18841.70453.83834.39593.83832.68791.7080
H142.22302.78592.88083.58801.04923.18843.84451.70452.68793.83834.39593.83831.7080

picture of trimethylsilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Si1 C3 H6 109.541 Si1 C3 H9 110.012
Si1 C3 H10 110.012 Si1 C4 H7 109.541
Si1 C4 H11 110.012 Si1 C4 H12 110.012
Si1 C5 H8 109.541 Si1 C5 H13 110.012
Si1 C5 H14 110.012 H2 Si1 C3 108.805
H2 Si1 C4 108.805 H2 Si1 C5 108.805
C3 Si1 C4 110.129 C3 Si1 C5 110.129
C4 Si1 C5 110.129 H6 C3 H9 109.146
H6 C3 H10 109.146 H7 C4 H11 109.145
H7 C4 H12 109.146 H8 C5 H13 109.146
H8 C5 H14 109.145 H9 C3 H10 108.964
H11 C4 H12 108.964 H13 C5 H14 108.964
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 Si 0.760      
2 H -0.130      
3 C -0.726      
4 C -0.726      
5 C -0.726      
6 H 0.170      
7 H 0.170      
8 H 0.170      
9 H 0.173      
10 H 0.173      
11 H 0.173      
12 H 0.173      
13 H 0.173      
14 H 0.173      


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 -0.549 0.549
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.558 0.000 0.000
y 0.000 -35.558 0.000
z 0.000 0.000 -36.588
Traceless
 xyz
x 0.515 0.000 0.000
y 0.000 0.515 0.000
z 0.000 0.000 -1.031
Polar
3z2-r2-2.061
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 9.274 0.000 0.000
y 0.000 9.274 0.001
z 0.000 0.001 8.362


<r2> (average value of r2) Å2
<r2> 138.517
(<r2>)1/2 11.769