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・ Cyana unipunctata
・ Cyanaeorchis
・ Cyanagapanthia
・ Cyanagraea
・ Cyanamide
・ Cyanamide hydratase
・ Cyananthus
・ Cyananthus lobatus
・ Cyanarctia
・ Cyanarctia carpintera
・ Cyanarctia dama
・ Cyanarctia flavinigra
・ Cyanarctia percurrens
・ Cyanase
・ Cyanastrum
Cyanate
・ Cyanate ester
・ Cyanation
・ Cyane
・ Cyane Fossae
・ Cyanea
・ Cyanea (jellyfish)
・ Cyanea (plant)
・ Cyanea acuminata
・ Cyanea angustifolia
・ Cyanea asarifolia
・ Cyanea copelandii
・ Cyanea crispa
・ Cyanea dolichopoda
・ Cyanea dunbariae


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Cyanate : ウィキペディア英語版
Cyanate

The cyanate ion is an anion with the chemical formula written as () or (). In aqueous solution it acts as a base, forming isocyanic acid, HNCO. The cyanate ion is an ambidentate ligand, forming complexes with a metal ion in which either the nitrogen or oxygen atom may be the electron-pair donor. It can also act as a bridging ligand. Organic cyanates are called isocyanates when there is a C-NCO bond and cyanates when there is a C-OCN bond.
== Cyanate ion ==
The three atoms in a cyanate ion lie on a straight line, giving the ion a linear structure. The electronic structure is described most simply as
: :Ö:-C≡N:
with a single C-O bond and a triple C-N bond. The infrared spectrum of a cyanate salt has a band at ca. 2096 cm−1; such a high frequency is characteristic of a triple bond.〔Nakamoto, Part A, p171〕 The cyanate ion is a Lewis base. Both the oxygen and nitrogen atoms carry a lone pair of electrons and either one or the other, or both can be donated to Lewis acid acceptors. It can be described as an ambidentate ligand.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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