翻訳と辞書 Words near each other ・ Chromium toxicity ・ Chromium trifluoride ・ Chromium trioxide ・ Chromium(I) hydride ・ Chromium(II) acetate ・ Chromium(II) bromide ・ Chromium(II) chloride ・ Chromium(II) fluoride ・ Chromium(II) hydride ・ Chromium(II) oxalate ・ Chromium(II) oxide ・ Chromium(II) selenide ・ Chromium(II) silicide ・ Chromium(II) sulfate ・ Chromium(III) 2-ethylhexanoate ・ Chromium(III) acetylacetonate ・ Chromium(III) boride ・ Chromium(III) bromide ・ Chromium(III) chloride ・ Chromium(III) hydroxide ・ Chromium(III) iodide ・ Chromium(III) nicotinate ・ Chromium(III) oxide ・ Chromium(III) phosphate ・ Chromium(III) picolinate ・ Chromium(III) sulfate ・ Chromium(III) sulfide ・ Chromium(IV) chloride ・ Chromium(IV) fluoride ・ Chromium(IV) oxide Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Chromium(III) acetylacetonate ： ウィキペディア英語版 Chromium(III) acetylacetonate |Section2= |Section3= }} Chromium(III) acetylacetonate is the coordination compound with the formula Cr(C5H7O2)3, sometimes designated as Cr(acac)3. This purplish coordination complex is used in NMR spectroscopy as a relaxation agent because of its solubility in nonpolar organic solvents and its paramagnetism. ==Synthesis and structure== The compound is prepared by the reaction of chromium(III) oxide with acetylacetone (Hacac):〔W. Conard Fernelius, Julian E. Blanch “Chromium(III) Acetylacetonate: ()” Inorganic Syntheses, 1957, Volume 5, 130-131.〕 :Cr2O3 + 6 Hacac → 2 Cr(acac)3 + 3 H2O The complex has idealized D3 symmetry. The Cr-O distances are 1.93 Å.〔B. Morosin "The crystal structure of trisacetylacetonatochromium(III)" Acta Cryst. 1965. vol. 19, 131-137. 〕 Like other Cr(III) compounds, it has the d3 configuration, having a quartet ground state. Although it is relatively inert toward substitution, the complex undergoes bromination at the 3-positions of the chelate rings. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Chromium(III) acetylacetonate」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.