Iodide

The DOI, is made up of two components. The first element -- the prefix -- is assigned to the publisher by a registration agency. Eventually, there may be multiple registration agencies to serve separate geographical regions or for each intellectual property sector (such as text publishing, photographs, music, software, etc.). However, at this stage there is only one registration agency and Directory Manager.

The DOI, is made up of two components. The first element -- the prefix -- is assigned to the publisher by a registration agency. Eventually, there may be multiple registration agencies to serve separate geographical regions or for each intellectual property sector (such as text publishing, photographs, music, software, etc.). However, at this stage there is only one registration agency and Directory Manager.

The second element, following a slash mark, is the suffix. This is the designation assigned by the publisher to the specific content being identified. Many publishers have elected to use recognized existing international standards for their suffixes when such a standard applies to the object being identified (e.g., ISBN for a book), but may alternatively choose to use an internal code. In use, the DOI identifier is an opaque string without intelligent meaning other than as an identifier.

Periodinanes are chemical compounds containing hypervalent iodine. These iodine compounds are hypervalent because the iodine atom in it contains more than the 8 electrons in the valence shell required for the octet rule. When iodine is complexed with a monodentate electronegative ligand such as chlorine, iodine compounds occur with a +3 oxidation number as iodine(III) or λ³-iodanes or as a +5 oxidation number as iodine(V) or λ⁵-iodanes.

Iodine itself contains 7 valence electrons and in a λ³-iodane three more are donated by the ligands making it a decet structure. λ⁵-iodanes are dodecet molecules. In an ordinary iodine compound such as iodobenzene the number of valence electrons is eight as expected. In order to get from iodine to a hypervalent iodine compound it gets oxidized with removal of first 3 electrons and then 5 electrons.