Vibrational levels (cm-1)
Mode Number |
Symmetry |
Frequency |
Intensity |
Comment |
Description |
Fundamental(cm-1) |
Harmonic(cm-1) |
Reference |
(km mol-1) |
unc. |
Reference |
1 |
A1 |
855 |
|
webbook |
|
|
|
|
SiF2 sym str |
2 |
A1 |
345 |
|
webbook |
|
|
|
|
SiF2 sciss |
3 |
B2 |
870 |
|
webbook |
|
|
|
|
SiF2 asym str |
vibrational zero-point energy: 1035.2 cm
-1 (from fundamental vibrations)
Calculated vibrational frequencies for
SiF
2+ (Silicon difluoride cation).
Geometric Data
Point Group C2v
Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees
Cartesians
Atom |
x (Å) |
y (Å) |
z (Å) |
Si1 |
0.0000 |
0.0000 |
0.5703 |
F2 |
0.0000 |
1.2249 |
-0.4436 |
F3 |
0.0000 |
-1.2249 |
-0.4436 |
Atom - Atom Distances
Distances in Å
|
Si1 |
F2 |
F3 |
Si1 |
|
1.5901 | 1.5901 |
F2 |
1.5901 |
|
2.4499 |
F3 |
1.5901 | 2.4499 |
|
Calculated geometries
for SiF
2+ (Silicon difluoride cation).
Experimental Bond Angles (degrees) from cartesians
atom1 |
atom2 |
atom3 |
angle |
F2 |
Si1 |
F3 |
100.770 |
|
F2 |
Si1 |
F3 |
100.770 |
Bond descriptions
Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Connectivity
Atom 1 |
Atom 2 |
Si1 |
F2 |
Si1 |
F3 |
Dipole, Quadrupole and Polarizability
Electric dipole moment
State |
Config |
State description |
Conf description |
Exp. min. |
Dipole (Debye) |
Reference |
comment |
Point Group |
Components |
x |
y |
z |
total |
dipole |
quadrupole |
1 |
1 |
1A1 |
C2v |
True |
|
|
|
1.230 |
NSRDS-NBS10 |
MW +-0.015 D μ0 |
C2v |
1 |
2 |
2 |
1 |
3B1 |
C2v |
True |
|
|
|
|
|
|
C2v |
1 |
2 |
Experimental dipole measurement abbreviations: MW microwave; DT Dielectric with Temperature variation; DR Indirect (usually an upper limit); MB Molecular beam
Calculated electric dipole moments for
SiF
2+ (Silicon difluoride cation).
Electric quadrupole moment
State |
Config |
State description |
Conf description |
Exp. min. |
Quadrupole (D Å) |
Reference |
comment |
Point Group |
Components |
xx |
yy |
zz |
dipole |
quadrupole |
1 |
1 |
1A1 |
C2v |
True |
|
|
|
|
|
C2v |
1 |
2 |
2 |
1 |
3B1 |
C2v |
True |
|
|
|
|
|
C2v |
1 |
2 |
Calculated electric quadrupole moments for
SiF
2+ (Silicon difluoride cation).