For faster navigation, this Iframe is preloading the Wikiwand page for
過テクネチウム酸.
過テクネチウム酸(かテクネチウムさん、英: pertechnetic acid)は、化学式が HTcO4 と表されるテクネチウムのオキソ酸である。
テクネチウムまたはテクネチウム化合物を硝酸や王水のような酸化力のある酸、または水と酸化テクネチウム(VII)を反応させることによって得られる[1]。過テクネチウム酸は暗赤色の吸湿性固体で、強酸であるため容易にプロトンを供与する[2]。
過テクネチウム酸イオン(TcO4-)は正四面体型構造で、過テクネチウム酸カリウム(KTcO4)結晶中における Tc - O 結合距離は1.724Åである。過マンガン酸イオンとは異なり、水溶液中では安定で、酸化剤としての作用は弱く、過レニウム酸イオンに類似する。アルカリ性水溶液中では安定、HCl、HBr、HI水溶液中では還元される[3]。
水溶液中における過テクネチウム酸イオンの標準酸化還元電位は以下の通りである[4]。
![{\displaystyle E^{\circ }=0.700{\rm {V))}](https://wikimedia.org/api/rest_v1/media/math/render/svg/6fd638baf42a86de44aaad1b79563f93a4286f14)
![{\displaystyle E^{\circ }=0.738{\rm {V))}](https://wikimedia.org/api/rest_v1/media/math/render/svg/706d9d52dff788538cd5793c5f978c56cdaede05)
![{\displaystyle E^{\circ }=0.472{\rm {V))}](https://wikimedia.org/api/rest_v1/media/math/render/svg/6996c1484a5329d30b263428f06eb316fd9895a6)
過テクネチウム酸イオンは鉄鋼の強力な侵蝕抑止剤として働くが実用化されていない[3]。
{{bottomLinkPreText}}
{{bottomLinkText}}
This page is based on a Wikipedia article written by
contributors (read/edit).
Text is available under the
CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.
{{current.index+1}} of {{items.length}}
Thanks for reporting this video!
This browser is not supported by Wikiwand :(
Wikiwand requires a browser with modern capabilities in order to provide you with the best reading experience.
Please download and use one of the following browsers:
An extension you use may be preventing Wikiwand articles from loading properly.
If you're using HTTPS Everywhere or you're unable to access any article on Wikiwand, please consider switching to HTTPS (https://www.wikiwand.com).
An extension you use may be preventing Wikiwand articles from loading properly.
If you are using an Ad-Blocker, it might have mistakenly blocked our content.
You will need to temporarily disable your Ad-blocker to view this page.
✕
This article was just edited, click to reload
Please click Add in the dialog above
Please click Allow in the top-left corner,
then click Install Now in the dialog
Please click Open in the download dialog,
then click Install
Please click the "Downloads" icon in the Safari toolbar, open the first download in the list,
then click Install
{{::$root.activation.text}}
Follow Us
Don't forget to rate us
Oh no, there's been an error
Please help us solve this error by emailing us at
support@wikiwand.com
Let us know what you've done that caused this error, what browser you're using, and whether you have any special extensions/add-ons installed.
Thank you!