Optical Isomer
Optic isomers is also called enantiomers. Enantiomers are related as non-superimposable mirror images and differ in the direction with which they rotate plane-polarized light. These isomers are refered to as enantiomers or enantiomorphs of each other and their nonsuperimposable structures are described as being asymmetric.
Chapter 4. Structure and Properties of Coordination
Compound Chapter 5. Kinetics and Mechanism of Reactions of Coordination Compound
Textbook:
《配位化学（双语版）(Bilingual)》，李晖编著，化学工业出版社
Two types of valence:
a primary valence or ionizable, valence corresponded to what we call today the oxidation state; for cobalt, it is the 3+ state. a secondary valence is more commonly called the coordination number (fixed geometric positions in space).
Coordination Chemistry
Department of Chemistry School of Science Beijing Institute of Technology
Hui Li
Questions 1: What are the four fundamental branches of chemistry? inorganic chemistry organic chemistry analytical chemistry physical chemistry
（2006年2月版）。 References: 1. 2. 3. “Metals and Ligands Reactivity” - Constable - VCH Publishers. “Advanced Inorganic Chemistry” - Cotton, Wilkinson, Murillo and Bochmann - Wiley. “Inorganic Chemistry, Principles of Structure and Reactivity” Huheey, Keiter and Keiter - Harper Collins College Publishers. （1992年2月）。
Proposed structure of cobalt ammonia complexes from number of ionized chloride
solid color ionized Cl- complex formula
CoCl36NH3 CoCl35NH3
Yellow Purple
Isomers are defined here as compounds that have the same numbers and types of chemical bonds but differ in the spatial arrangements of those bonds.
The Modern Coordination Chemistry--Werner Coordination Chemistry
Because of the prevailing view that optical activity was related to C atoms, Werner prepared a completely chiral inorganic complex (i.e., no C atoms) successfully, to prove that "carbon free inorganic compounds can also exist as mirror-image isomers".
Active research is performed in border areas towards organic chemistry, catalysis, materials, biochemistry and physics.
Chapter 1. Introduction Chapter 2. The Electronic Structure Theory of Coordination Compound Chapter 3. Electronic Spectra of Coordination Compound
For example:
A complex is Ag(NH3)2+, formed when Ag+ ions are mixed with neutral ammonia molecules.
Ag+ + 2 NH3
Ag(NH3)2+
A complex Ag(S2O3)23- is formed between silver ions and negative thiosulfate ions:
[Co(NH3)6]Cl3 [Co(NH3)5Cl]Cl2
CoCl34NH3
CoCl34NH3
Green
Violet
trans-[Co(NH3)4Cl2]Cl
cis-[Co(NH3)4Cl2]Cl
Again, checking some interesting compounds: [Co(en)3]2+ [Co(en)2ClNH3]2+ (en = NH2CH2CH2NH2 is ethylenediammf CoCl3· 3 were measured when 6NH the compounds were dissolved in water.
AgNO3(aq) + Cl− (aq) −→ AgCl(s) + NO3− (aq)
How might you explain such data?
Nomenclature of Coordination Complexes
Structures of coordination compounds can be very complicated, and their names long because the ligands may already have long names. Knowing the rules of nomenclature not only enable you to understand what the complex is, but also let you give appropriate names to them.
4. “配位化合物的结构和性质”，游效曾 编著， 科学出版社
Chapter 1
Introduction
The Origin of Coordination Chemistry
1. Early Coordination Compounds 2. Modern Coordination Chemistry
Something old and something new, Something borrowed and something blue, Something lacy and something racy, It will definitely be new
And it might just be from you.
They should exist in two forms, which are mirror images of each other.
The absolute configuration of [Co(en)3]3+
Chiral; Chirality
It is a concept relating to a molecule that is not superimposable on its mirror image. The one looks like an image in the mirror of the another. These two molecules are considered as chiral molecules. The two chiral molecules have the same physical and chemical properties.
Front cover pages (merged) from book on the life of Werner
Alfred Werner (1866-1919) was appointed at the University of Zurich to teach organic chemistry. In fact, he was very interested in inorganic chemistry and found many problems to disturb the inorganic chemists.
Ag+ + 2 S2O32-
Ag(S2O3)23-
Journal of Coordination Chemistry Editors: Jim D. Atwood, Department of Chemistry, 556 Natural Sciences Complex, North Campus, SUNY University at Buffalo, NY 14260-3000 USA Peter Williams, Centre for Industrial and Process Mineralogy, School of Science, Food & Horticulture, University of Western Sydney, Locked Bag 1797, Penrith South DC, NSW 1797, Australia