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

using model chemistry: PBEPBE/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBEPBE/Def2TZVPP
 hartrees
Energy at 0K-409.582877
Energy at 298.15K-409.592260
HF Energy-409.582877
Nuclear repulsion energy174.204577
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 PBEPBE/Def2TZVPP
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 3048 3011 26.83      
2 A1 2971 2935 3.16      
3 A1 2116 2091 145.20      
4 A1 1422 1405 9.18      
5 A1 1242 1227 5.17      
6 A1 842 832 57.38      
7 A1 604 597 1.49      
8 A1 231 228 0.97      
9 A2 3053 3016 0.00      
10 A2 1400 1383 0.00      
11 A2 657 649 0.00      
12 A2 135 133 0.00      
13 E 3054 3017 15.62      
13 E 3054 3017 15.62      
14 E 3046 3009 1.33      
14 E 3046 3009 1.33      
15 E 2971 2935 7.06      
15 E 2971 2935 7.06      
16 E 1414 1397 2.74      
16 E 1414 1397 2.74      
17 E 1404 1387 0.12      
17 E 1404 1387 0.12      
18 E 1232 1217 30.45      
18 E 1232 1217 30.44      
19 E 883 872 152.28      
19 E 883 872 152.28      
20 E 823 813 15.49      
20 E 823 813 15.50      
21 E 693 685 11.53      
21 E 693 685 11.52      
22 E 595 588 7.76      
22 E 595 588 7.76      
23 E 198 195 0.62      
23 E 198 195 0.62      
24 E 147 145 0.00      
24 E 147 145 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 25318.7 cm-1
Scaled (by 0.9879) Zero Point Vibrational Energy (zpe) 25012.3 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 PBEPBE/Def2TZVPP
ABC
0.17546 0.17546 0.10343

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/Def2TZVPP

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 1.841
C3 0.000 1.545 -0.200
C4 1.338 -0.773 -0.200
C5 -1.338 -0.773 -0.200
H6 0.000 1.559 -1.243
H7 1.350 -0.780 -1.243
H8 -1.350 -0.780 -1.243
H9 -0.855 2.045 0.151
H10 0.855 2.045 0.151
H11 2.198 -0.282 0.151
H12 1.343 -1.763 0.151
H13 -1.343 -1.763 0.151
H14 -2.198 -0.282 0.151

Atom - Atom Distances (Å)
  Si1 H2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13 H14
Si11.51411.63231.63231.63232.21262.21262.21262.22342.22342.22342.22342.22342.2234
H21.51412.55932.55932.55933.45583.45583.45582.78702.78702.78702.78702.78702.7870
C31.63232.55932.67622.67621.04392.88392.88391.05061.05062.88003.58763.58762.8800
C41.63232.55932.67622.67622.88391.04392.88393.58762.88001.05061.05062.88003.5876
C51.63232.55932.67622.67622.88392.88391.04392.88003.58763.58762.88001.05061.0506
H62.21263.45581.04392.88392.88392.70062.70061.70631.70633.18873.84523.84523.1887
H72.21263.45582.88391.04392.88392.70062.70063.84523.18871.70631.70633.18873.8452
H82.21263.45582.88392.88391.04392.70062.70063.18873.84523.84523.18871.70631.7063
H92.22342.78701.05063.58762.88001.70633.84523.18871.70993.83904.39683.83902.6869
H102.22342.78701.05062.88003.58761.70633.18873.84521.70992.68693.83904.39683.8390
H112.22342.78702.88001.05063.58763.18871.70633.84523.83902.68691.70993.83904.3968
H122.22342.78703.58761.05062.88003.84521.70633.18874.39683.83901.70992.68693.8390
H132.22342.78703.58762.88001.05063.84523.18871.70633.83904.39683.83902.68691.7099
H142.22342.78702.88003.58761.05063.18873.84521.70632.68693.83904.39683.83901.7099

picture of trimethylsilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Si1 C3 H6 109.578 Si1 C3 H9 110.044
Si1 C3 H10 110.044 Si1 C4 H7 109.577
Si1 C4 H11 110.044 Si1 C4 H12 110.044
Si1 C5 H8 109.577 Si1 C5 H13 110.044
Si1 C5 H14 110.044 H2 Si1 C3 108.806
H2 Si1 C4 108.806 H2 Si1 C5 108.806
C3 Si1 C4 110.129 C3 Si1 C5 110.129
C4 Si1 C5 110.129 H6 C3 H9 109.108
H6 C3 H10 109.108 H7 C4 H11 109.108
H7 C4 H12 109.108 H8 C5 H13 109.108
H8 C5 H14 109.108 H9 C3 H10 108.937
H11 C4 H12 108.937 H13 C5 H14 108.937
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.347      
2 H -0.097      
3 C -0.374      
4 C -0.374      
5 C -0.374      
6 H 0.094      
7 H 0.094      
8 H 0.094      
9 H 0.098      
10 H 0.098      
11 H 0.098      
12 H 0.098      
13 H 0.098      
14 H 0.098      


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 -0.615 0.615
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.578 0.000 0.000
y 0.000 -35.578 0.000
z 0.000 0.000 -36.831
Traceless
 xyz
x 0.627 0.000 0.000
y 0.000 0.627 0.000
z 0.000 0.000 -1.253
Polar
3z2-r2-2.506
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 10.390 0.000 0.000
y 0.000 10.391 0.000
z 0.000 0.000 9.059


<r2> (average value of r2) Å2
<r2> 139.197
(<r2>)1/2 11.798