By Abhik Ghosh
Involved because it is with ninety five% of the periodic desk, inorganic chemistry is without doubt one of the foundational matters of medical learn. Inorganic catalysts are utilized in an important commercial methods and the sector, to an important volume, additionally types the root of nanotechnology. regrettably, the topic isn't really a favored one for undergraduates. This booklet goals to take a step to alter this scenario via proposing a mechanistic, logical advent to the subject.
Organic educating areas heavy emphasis on response mechanisms - "arrow-pushing" - and the authors of this publication have came upon mechanistic method works simply in addition for trouble-free inorganic chemistry. rather than hearing formal lectures or studying the cloth by way of middle, through educating scholars to acknowledge universal inorganic species as electrophiles and nucleophiles, coupled with organic-style arrow-pushing, this booklet serves as a steady and stimulating advent to inorganic chemistry, delivering scholars with the information and chance to resolve inorganic response mechanisms.
• The first e-book to use the arrow-pushing option to inorganic chemistry teaching
• With the response mechanisms procedure ("arrow-pushing"), scholars will now not need to depend on memorization as a tool for studying this topic, yet will as an alternative have a logical origin for this region of study
• Teaches scholars to acknowledge universal inorganic species as electrophiles and nucleophiles, coupled with organic-style arrow-pushing
• Provides a level of integration with what scholars examine in natural chemistry, facilitating studying of this subject
• Serves as a useful significant other to any introductory inorganic chemistry textbook
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Additional resources for Arrow Pushing in Inorganic Chemistry : a Logical Approach to the Chemistry of the Main Group Elements
Chem. Educ. 2006, 83, 791–799. 25 ELEMENTS OF BONDING IN HYPERVALENT COMPOUNDS 41 is still tetravalent in both compounds but its OS is 0. In the same manner, CN often equals valence. While these equalities can be understood on a case-by-case basis, it’s probably best to view them as coincidental. Another very important concept in this connection is that of FC. FC is the charge remaining on an atom when all the ligands have been removed homolytically. FCs are the charges that are commonly shown in structural formulas and reaction mechanisms.
Our approach may be summarized as follows: 1. Look at the product structure(s) carefully and determine what bonds have been broken in the course of the reaction and what new bonds have been formed. 2. Identify the nucleophile and the electrophilic site of attack. 3. Apply steps (1) and (2) iteratively until you arrive at the product structures (assuming they are known). Step (1) consists of pattern recognition, somewhat similar to the logic involved in putting together a puzzle. Note that in the quote at the beginning of the chapter, Sherlock Holmes describes this ability to “reason backward” as easy!
The expression means that the chemical properties of first-row elements are anomalous relative to those of their heavier congeners. Let us go through the above four rules one by one and see how well they hold up in a main-group inorganic context. 1. The octet rule breaks down routinely as soon as one goes down to period 3. Main-group centers with more than eight electrons in their valence shells abound for period 3 and below. Molecules containing such centers are called hypervalent. Well-known examples include SiF6 2− , PF5 , PF6 − , SF4 , SF6 , BrF3 , IF5 , IF7 , XeF2 , XeF4 , XeF6 , and XeF8 2− .