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Title: OVERVIEW ON COORDINATION CHEMISTRY
Description: AIMED AT UNIVERSITY STUDENTS MAJORING IN CHEMISTRY. TOPIC IS COORDINATION CHEMISTRY
Description: AIMED AT UNIVERSITY STUDENTS MAJORING IN CHEMISTRY. TOPIC IS COORDINATION CHEMISTRY
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1
BRIEF OVERVIEW OF
COORDINATION CHEMISTRY
MOHAMMAD B
...
3 Bgn Canselori
Tel: 03 89214831; Email:
mb_kassim@ukm
...
my
2
Textbooks and references books
Textbook:
Ø “Inorganic Chemistry” by C
...
Housecroft and A
...
Sharpe,
Prentice Hall (1st ed
...
, 2005; 3rd ed
...
, by D
...
Shriver et al
...
Ø Basic Inorganic Chemistry, 3rd ed
...
A
...
, Wiley
(1995)
Ø Concepts and Models of Inorganic Chemistry, 3rd ed
...
Douglas et al
...
, by G
...
Miessler and D
...
Tarr,
Prentice Hall (2004)
3
Websites
Ø Useful links
• Textbook website: www
...
co
...
webelements
...
rsc
...
htm
http://pubs
...
org/cen/80th/elements
...
group
...
ac
...
Solutions of wave equations yield
wavefunctions, Ψ, which contain
the information required to
describe ALL of the properties
of the wave
...
Schroedinger thinking about his
equation
...
The energy of an orbital of a multielectron atom depends on n and l
(but not ml)
2s < 2p
3s < 3p <3d
Note energy levels are getting
closer together for n = 3
This means that factors ignored
may have to be considered
Sizes, Shapes, and orientations of orbitals
n determines size; l determines shape
ml determines orientation
Nodes in orbitals: s orbitals: 1s no nodes, 2s one node, 3s two nodes
Nodes in orbitals: 3d orbitals:
two angular nodes that passes
through the nucleus
Orbital is “four leaf clover”
shaped
d orbitals are important for
metals
The fourth quantum number: Electron Spin
ms = +1/2 (spin up) or -1/2 (spin down)
Spin is a fundamental property of electrons, like its charge and
mass
...
The Ar atom has shells as
shown in the profile of
electron density as a function
of distance from the nucleus
These are the valence
electrons of the Lewis
structures
14
COORDINATION
CHEMISTRY
15
Coordination Chemistry
• Ref
...
20), Shriver (Chap
...
• Spectral, magnetic and thermochemical properties
• Coordination equilibria, chelate effect
• M
...
diagram of ML6
16
Coordination compounds (metal complexes)
Metal
n+
L
L
L
M
L
nX
L
L
Ligand
Common geometry
L
L
L
M
L
L
Tetrahedral
L
Counter anion
M
L
L
M
L
L
Square planar
L
L
L
L
L
Square pyramidal
L
L
M
L
L
L
Trigonal bipyramidal
L
M
L
L
L
Octahedral
17
The metals
Transition elements (http://www
...
org/is/viselements
...
76
Mo3+
0
...
82 0
...
g
...
g
...
g
...
g
...
g
...
g
...
g
...
of donor atom
unidentate
NH3
ammonia
or ammine
N
pyridine
py
bidentate
NH2CH2CH2NH2
ethylenediamine
(en)
N
N
2,2'-bipyridine
bipy
tridentate
NH(CH2NH2)2
diethylenetriamine
(dien)
N
N
N
2,2':6',6"-terpyridine
terpy
Metal complexes with polydentate (chelating) ligands
are more stable than those with unidentate analogues
...
N
...
: I, II, 0)
(4) Indicate the no
...
Also bis, tris, tetrakis
(5) Anionic ligand ⇒ o;
e
...
Cl- (chloro), H- (hydrido), CN- (cyano)
(6) Anionic complexes => ate
e
...
Mn (manganate), Fe (ferrate), Cr (chromate) etc
29
(7) Add structural prefixes,
e
...
cis/ trans, fac/ mer etc
Title: OVERVIEW ON COORDINATION CHEMISTRY
Description: AIMED AT UNIVERSITY STUDENTS MAJORING IN CHEMISTRY. TOPIC IS COORDINATION CHEMISTRY
Description: AIMED AT UNIVERSITY STUDENTS MAJORING IN CHEMISTRY. TOPIC IS COORDINATION CHEMISTRY