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

using model chemistry: BLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at BLYP/6-31G*
 hartrees
Energy at 0K-409.736823
Energy at 298.15K-409.746238
HF Energy-409.736823
Nuclear repulsion energy172.592652
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/6-31G*
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 3034 3010 49.15      
2 A1 2967 2943 3.34      
3 A1 2133 2115 185.43      
4 A1 1474 1462 6.48      
5 A1 1300 1290 3.68      
6 A1 878 871 70.51      
7 A1 585 580 1.49      
8 A1 230 228 0.67      
9 A2 3037 3012 0.00      
10 A2 1454 1442 0.00      
11 A2 685 679 0.00      
12 A2 138 137 0.00      
13 E 3038 3013 28.13      
13 E 3038 3013 28.11      
14 E 3032 3007 1.04      
14 E 3032 3007 1.04      
15 E 2965 2941 10.75      
15 E 2965 2941 10.74      
16 E 1467 1455 1.75      
16 E 1467 1455 1.75      
17 E 1456 1445 0.15      
17 E 1456 1445 0.15      
18 E 1289 1279 19.93      
18 E 1289 1279 19.93      
19 E 911 903 172.29      
19 E 911 903 172.29      
20 E 851 845 11.17      
20 E 851 845 11.17      
21 E 678 672 12.18      
21 E 678 672 12.18      
22 E 614 609 7.76      
22 E 614 609 7.77      
23 E 197 195 0.49      
23 E 197 195 0.49      
24 E 148 147 0.00      
24 E 148 147 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 25601.4 cm-1
Scaled (by 0.9919) Zero Point Vibrational Energy (zpe) 25394.1 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/6-31G*
ABC
0.17191 0.17191 0.10111

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G*

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 -0.199
C4 1.338 -0.773 -0.199
C5 -1.338 -0.773 -0.199
H6 0.000 1.559 -1.243
H7 1.351 -0.780 -1.243
H8 -1.351 -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
Si11.51411.63211.63211.63212.21282.21282.21282.22342.22342.22342.22342.22342.2234
H21.51412.55922.55922.55923.45593.45593.45592.78692.78692.78692.78692.78692.7869
C31.63212.55922.67602.67601.04392.88412.88411.05081.05082.87993.58753.58752.8799
C41.63212.55922.67602.67602.88411.04392.88413.58752.87991.05081.05082.87993.5875
C51.63212.55922.67602.67602.88412.88411.04392.87993.58753.58752.87991.05081.0508
H62.21283.45591.04392.88412.88412.70112.70111.70641.70643.18893.84563.84563.1889
H72.21283.45592.88411.04392.88412.70112.70113.84563.18891.70641.70643.18893.8456
H82.21283.45592.88412.88411.04392.70112.70113.18893.84563.84563.18891.70641.7064
H92.22342.78691.05083.58752.87991.70643.84563.18891.71023.83904.39693.83902.6868
H102.22342.78691.05082.87993.58751.70643.18893.84561.71022.68683.83904.39693.8390
H112.22342.78692.87991.05083.58753.18891.70643.84563.83902.68681.71023.83904.3969
H122.22342.78693.58751.05082.87993.84561.70643.18894.39693.83901.71022.68683.8390
H132.22342.78693.58752.87991.05083.84563.18891.70643.83904.39693.83902.68681.7102
H142.22342.78692.87993.58751.05083.18893.84561.70642.68683.83904.39693.83901.7102

picture of trimethylsilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Si1 C3 H6 109.599 Si1 C3 H9 110.043
Si1 C3 H10 110.043 Si1 C4 H7 109.599
Si1 C4 H11 110.042 Si1 C4 H12 110.043
Si1 C5 H8 109.599 Si1 C5 H13 110.043
Si1 C5 H14 110.042 H2 Si1 C3 108.804
H2 Si1 C4 108.804 H2 Si1 C5 108.804
C3 Si1 C4 110.131 C3 Si1 C5 110.131
C4 Si1 C5 110.131 H6 C3 H9 109.102
H6 C3 H10 109.102 H7 C4 H11 109.102
H7 C4 H12 109.102 H8 C5 H13 109.102
H8 C5 H14 109.102 H9 C3 H10 108.929
H11 C4 H12 108.929 H13 C5 H14 108.929
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.543      
2 H -0.085      
3 C -0.594      
4 C -0.594      
5 C -0.594      
6 H 0.144      
7 H 0.144      
8 H 0.144      
9 H 0.149      
10 H 0.149      
11 H 0.149      
12 H 0.149      
13 H 0.149      
14 H 0.149      


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 -0.638 0.638
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.801 0.000 0.000
y 0.000 -34.801 0.000
z 0.000 0.000 -36.303
Traceless
 xyz
x 0.751 0.000 0.000
y 0.000 0.751 0.000
z 0.000 0.000 -1.502
Polar
3z2-r2-3.004
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 8.568 0.000 0.000
y 0.000 8.568 0.000
z 0.000 0.000 7.521


<r2> (average value of r2) Å2
<r2> 141.222
(<r2>)1/2 11.884