{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Week 6 F - Vibra&onalmodesofSiH2Cl2 Wenowhave &onsare 4A1...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Vibra&onal modes of SiH 2 Cl 2 We now have:‐ two stretching modes of the SiCl 2 group with symmetry A1 and B2 two of the SiH 2 group with symmetry A1 and B1 The remaining five modes must be deforma&ons (angle bending vibra&ons) As with stretches, we must treat symmetry‐related atoms together Symmetry species of vibra&ons are:‐ 4A 1 + A 2 + 2B 1 + 2B 2
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
From the character table, this belongs to the symmetry species A 1 We call the mode of vibra&on δ sym SiCl 2 (or SiCl 2 scissors) E C 2 σ xz σ yz +1 +1 +1 +1 x z y
Background image of page 2
From the character table, this belongs to the symmetry species A 1 We call the mode of vibra&on δ sym SiH 2 (or SiH 2 scissors) +1 +1 +1 +1 E C 2 σ xz σ yz x z y
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
From the character table, this belongs to the symmetry species B 1 We call the mode of vibra&on ω SiH 2 (or SiH 2 wag) E C 2 σ xz σ yz +1 ‐1 +1 ‐1 x z y
Background image of page 4
From the character table, this belongs to the symmetry species B 2 We call the mode of vibra&on ρ SiH 2 (or SiH 2 rock) +1 ‐1 ‐1 +1 E C 2 σ xz σ yz x z y
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
y x From the character table, this belongs to the symmetry species A 2 We call the mode of vibra&on τ SiH 2 (or SiH 2 twist) E C 2 σ xz σ yz +1 +1 ‐1 ‐1
Background image of page 6
Vibra&onal modes of SiH 2 Cl 2 Overall, we now have:‐ two stretching modes of the SiCl 2 group A
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}