return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for SiHCl3 (Trichlorosilane)

using model chemistry: B3PW91/aug-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 B3PW91/aug-cc-pVTZ
 hartrees
Energy at 0K-1670.774990
Energy at 298.15K-1670.776624
HF Energy-1670.774990
Nuclear repulsion energy336.628897
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 B3PW91/aug-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 2295 2215 47.62      
2 A1 487 470 23.57      
3 A1 246 238 6.89      
4 E 790 762 120.15      
4 E 790 762 120.16      
5 E 590 570 137.40      
5 E 590 570 137.39      
6 E 169 164 1.75      
6 E 169 164 1.74      

Unscaled Zero Point Vibrational Energy (zpe) 3063.8 cm-1
Scaled (by 0.9651) Zero Point Vibrational Energy (zpe) 2956.8 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 B3PW91/aug-cc-pVTZ
ABC
0.08060 0.08060 0.04325

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/aug-cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.504
H2 0.000 0.000 1.975
Cl3 0.000 1.930 -0.177
Cl4 1.672 -0.965 -0.177
Cl5 -1.672 -0.965 -0.177

Atom - Atom Distances (Å)
  Si1 H2 Cl3 Cl4 Cl5
Si11.47062.04702.04702.0470
H21.47062.89082.89082.8908
Cl32.04702.89083.34333.3433
Cl42.04702.89083.34333.3433
Cl52.04702.89083.34333.3433

picture of Trichlorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 Cl3 109.444 H2 Si1 Cl4 109.444
H2 Si1 Cl5 109.444 Cl3 Si1 Cl4 109.498
Cl3 Si1 Cl5 109.498 Cl4 Si1 Cl5 109.499
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 1.068      
2 H -0.172      
3 Cl -0.299      
4 Cl -0.299      
5 Cl -0.299      


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 0.880 0.880
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -51.632 0.000 0.000
y 0.000 -51.632 0.000
z 0.000 0.000 -49.487
Traceless
 xyz
x -1.072 0.000 0.000
y 0.000 -1.072 0.000
z 0.000 0.000 2.145
Polar
3z2-r24.289
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 10.514 0.000 0.000
y 0.000 10.514 -0.000
z 0.000 -0.000 8.359


<r2> (average value of r2) Å2
<r2> 230.336
(<r2>)1/2 15.177