return to home page

II.A.3. (XII.A.1.)

Listing of experimental geometry data for SiH2Cl2 (dichlorosilane)

Rotational Constants (cm-1)
See section I.F.4 to change rotational constant units
A B C
0.47149 0.08585 0.07447
Rotational Constants from 1976Wel/Ger:117
Calculated rotational constants for SiH2Cl2 (dichlorosilane).

Point Group C2v

Internal coordinates (distances (r) in Å) (angles (a) in degrees) (dihedrals (d) in degrees)
Description Value Connectivity Reference Comment
Atom 1 Atom 2 Atom 3 Atom 4
rSiH 1.480 1 2 JANAF +-0.015
rSiCl 2.033 1 4 JANAF +-0.003
aHSiH 111.3 2 1 3 JANAF +-0.7
aClSiCl 109.72 4 1 5 JANAF +-0.3
aHSiCl 108.95 2 1 4 JANAF by symmetry
picture of dichlorosilane

Bond descriptions
Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
H-Si 2
Si-Cl 2

Atom x (Å) y (Å) z (Å)
Si1 0.0000 0.0000 0.7623
H2 -1.2219 0.0000 1.5974
H3 1.2219 0.0000 1.5974
Cl4 0.0000 1.6625 -0.4079
Cl5 0.0000 -1.6625 -0.4079

Atom - Atom Distances (Å)
  Si1 H2 H3 Cl4 Cl5
Si11.48001.48002.03302.0330
H21.48002.44382.87712.8771
H31.48002.44382.87712.8771
Cl42.03302.87712.87713.3250
Cl52.03302.87712.87713.3250

Calculated geometries for SiH2Cl2 (dichlorosilane).


References
By selecting the following links, you may be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to cccbdb@nist.gov.
squib reference DOI
1976Wel/Ger:117 R Wellington Davis, MCL Gerry "The Microeave Spectrum, Structure, Chlorine Nuclear Quadrupole Coupling Constants, Dipole Moment, and Centrifugal Distortion Constants of Dichlorosilane" J. Mol. Spectrosc. 60, 117-129, 1976 10.1016/0022-2852(76)90120-X
JANAF Chase, M.W., Jr.; Davies, C.A.; Downey, J.R., Jr.; Frurip, D.J.; McDonald, R.A.; Syverud, A.N., JANAF Thermochemical Tables (Third Edition), J. Phys. Chem. Ref. Data,Suppl. 1, 1985, 14, 1.  

Got a better number? Please email us at cccbdb@nist.gov


Browse
PreviousNext