The azide ion (N3-) is a linear triatomic molecule. Using the D2h approximation (i) derive
SALCs corresponding to the terminal N atoms and determine their symmetry
representation; (ii) Determine the representations for the s and p orbitals on the central
atom; (iii) Create a reasonable MO diagram labeling orbitals as σ, σ*, π, π*, or nb; (iv)
Determine the bond order and comment on how it compares to the Lewis Dot diagram for
this molecule.
PtH4^2- adopts a square planar geometry. (i) Determine the point group for this molecule;
(ii) Generate SALCs for the H atoms using resource section 5; (iii) Determine the
representations for the d orbitals on the central atom; (iv) Given that the d-orbitals are
closest in energy to the H 1s orbitals, determine which orbitals can overlap with the H
SALCs and generate a reasonable MO diagram.
You are looking for a suitable drying agent for a solvent and find SrH2 and CaH2 on the
shelf. Which would you choose to use and why?
The lighter elements of Group I and II have distinctly different chemistry from their
heavier congeners. For example, Be and Li both have a strong tendency to form
polymer-like structures with bridging atoms whereas the heavier elements do not. (a)
What makes Be and Li different from the heavier group members? (b) What is the
physical origin of the tendency towards polymerization for Be and Li complexes, and
how can it be overcome?
Do you expect NMe3 to give a more stable adduct with BF3 or BBr3? Defend your
choice. What about MeOH with BF3 vs. BBr3?
Starting from graphite and using any other reagents you wish, describe how you could go
about preparing an intercalant of formula C16Mn (Mn is in the 2+ oxidation state).
Compare the structure and properties of BN and graphite and indicate how and why they
are similar and yet different.
got a couple of em already, but still need all of these :/
any help is appreciated!