Everything about The Oxidation Number totally explained
The
oxidation number of a central atom in a
coordination compound is the charge that it would have if all the
ligands were removed along with the
electron pairs that were shared with the central atom. It is used in the
nomenclature of inorganic compounds. It is represented by a
Roman numeral; the plus sign is omitted for positive oxidation numbers. The oxidation number is placed either as a right superscript to the element symbol, for example Fe
III, or in parentheses after the name of the element, for example iron(III): in the latter case, there's no space between the element name and the oxidation number.
The oxidation number is usually numerically equal to the
oxidation state. However, in a few cases the ligand atom can be less electronegative than the central atom (for example, in iridium phosphine complexes), resulting in a formal oxidation state that's different from the oxidation number.
Spectroscopic oxidation states
Although formal oxidation numbers can be helpful for classifying compounds, they're unmeasureable and their physical meaning can be ambiguous. Formal oxidation numbers require particular caution for molecules where the bonding is covalent, since the formal oxidation numbers require the
heterolytic removal of
ligands, which essentially denies
covalency.
Spectroscopic oxidation states, as defined by Jorgenson and reiterated by Wieghart, are measureables that are bench-marked using spectroscopic and crystallographic data.
Further Information
Get more info on 'Oxidation Number'.
|
External Link Exchanges
Do you know how hard it is to get a link from a large encyclopaedia? Well we're different and will prove it. To get a link from us just add the following HTML to your site on a relevant page:
<a href="http://oxidation_number.totallyexplained.com">Oxidation number Totally Explained</a>
Then simply click through this link from your web page. Our crawlers will verify your link, extract the title of your web page and instantly add a link back to it. If you like you can remove the words Totally Explained and embed the link in article text.
As long as your link remains in place, we'll keep our link to you right here. Please play fair - our crawlers are watching. Your site must be closely related to this one's topic. Any kind of spamming, dubious practises or removing the link will result in your link from us being dropped and, potentially, your whole site being banned. |
