Ions in solution conduct electricity
Conductance is the reciprocal of resisitance
types of ions
concentration (of the ions)
type of electrolyte: electrolytes may be strong
completely dissociated or weak partially
Colors of Representative Compounds of
the Period 4 Transition Metals
a = Scandium oxide
f = Potassium ferricyanide
b = Titanium(IV) oxide
g = Cobalt(II) chloride hexahydrate
c = Vanadyl sulfate dihydrate
h = Nickel(II) nitrate hexahydr
Reactions of complexes
Basic mechanisms of reactions involving metal
Ligand exchange: associative and dissociative
Conjugate base mechanism
Relation to stereochemistry
Trans effect in square planar compounds
Metal ions are essential for many biological
Many functions depend on coordination chemistry
Active site function can be mimicked by synthesis of
model coordination compounds
Structural properties deduced from spe
Compounds of CO;
bonding to metals
18 electron rule
pi acceptor ligands
Isoelectronic (with CO) ligands
Other pi acceptor ligands
Olefin and acetylene ligands and bonding
Aromatic ligands and bonding
Review - Nomenclature
1. Name ligands in alphabetical order
2. Anionic ligands - end name with o - e.g., chloro
water is aqua, ammonia is ammine
3. Indicate number of ligands - di, tri, tetra, penta, hexa; but
4. If ligand name is c
SYMMETRY and POINT GROUPS
Mirror plane - one half is the mirror image of the other.
Axis - Cn where n is the order identity n times in one complete
revolution. The highest order axis is defined as the z axis and is
MOLECULES bonding and shape
Simplest concept: Lewis str: 2 bonds, 2 lone pairs; use VSEPR to
predict shape. Says nothing about energy.
Valence bond approach: consider orbitals. Valence orbitals of O
are s and three ps; will hybridize to sp3 4 or
Organometallic reactions and catalysis
Homogeneous catalysts - in solution
Act through a set of basic reaction types
A ligand may dissociate, leading to
rearrangement or replacement
ATOMIC ENERGY LEVELS
ENERGY STATES OF ATOMS
how energy states are designated
the way in which electrons interact in
light and medium atoms
The energy of an atom is the sum of the energies of the
occupied orbitals and
A substance in a magnetic field has magnetism
induced in it.
The magnetism may be with or against the field.
A magnetic field removes the degeneracy of
states with different ML and MS values.
Changes in energy give rise to the magnetic
Inorganic II Test 1.
1. a) What are the point groups of the following molecules: 5 pts each
Cs. Pyramidal, no axes, mirror plane.
Ni(cyclobutadiene)2 (staggered conformation);
D4d. A C4 axis but also C2 axes between the vertical mirror
Inorganic II Test 2
1. Give the ground state Russell-Saunders designations of the following: (10)
d6; sum of ml values are: 2+2+1+0-1-2 = 2
sum of ms values =4/2 State is 5D.
2. a) For [V(NH3)6]2+, B = 660 cm-1 and 10Dq = 14,80
Inorganic II Test 3 Dec. 2/14 NAME_
3. Determine the most likely value of n for each of the following compounds: (3x4 pts)
(i) [Ti(CO) ]
4+2+6; needs 12 more = 6CO
(ii) [( -Cp)V(CO) ]
(iii) [Mn(NO)(CO) ] (linear NO ligand)
NO linear don
Inorganic II Take Home Test 1 Fall 2014
This test should be completed and turned in at the in-class test
on Oct. 3. It will count 50% of the total grade on that test.
You should print it out after inserting enough space for your answers, which are best
Inorganic II Take Home Test 2/14
(Expand the printout as necessary to provide adequate space for a
Please make sure your name is on the paper.
You may use any published material including the textbook and notes for assistance, but a
Inorganic II minitest 1
To what point groups do the following molecules belong? 1 point
has only a mirror plane; Cs.
B. Ferrocene, 2 points
major axis C5, has C2 axes , no plane perpendicular to the major axis but planes
Inorganic 2 Miniassignment. NAME_
Due Tue. Sept. 16
The compound AxBy has an orthorhombic unit cell with A at (0,0,0) and (, , 0); and B at (, 0,
); (, 0, ); (0, , ) and (0, , ).
Sketch the unit cell.
What is the formula for the compound?
But see ionic liquids
Can have conductor
Ionic liquids melting points near or below room
Large and irregular ions prevent efficient packing;
large r in Born equatio