which reversibly isomerize in the case of complexes Ill, V and VI into η5-anions. These are new examples of metallotropic tautomerism in which the metal “slips” between the rings along the plane of the aromatic ligand. In the case of η6-anions of complexes of indole, carbazole, I and VII no such isomerization takes place. Alkylation of η6-anions yields 9-exo-alkyl compounds. These are also the only substances
芴,1-氮杂
芴(I),2-氮杂
芴(II),3-甲基-II(III),3-氮杂
芴(IV),4-氮杂
芴(V),
吲哚,
咔唑和氮杂类似物的相互作用7-甲基-V(VI)和[2,3]苯并-V(VII)与Cr(CO)6(
二甘醇/
庚烷,140°C),和(NH 3)3 Cr(CO)3(沸腾)
二恶烷)和具有[BrM(CO)5 ] [NEt 4 ](M Cr Cr,Mo,W)的II的研究。在所有情况下,II和IV仅形成LCr(CO)5型的N供体配合物,以及其他杂环:与苯配位的
芳烃-
铬三羰基衍
生物,而不与杂环配位。I和III与(NH 3)3 Cr(CO)3的相互作用导致形成两种类型的复合物(主要是
芳烃)的混合物。与(NH 3)3 Cr(CO)3的反应比涉及Cr(CO)6的类似过程的产率要高得多。arenechromium三羰基化合物(THF,
叔丁醇钾)引线的去质子化至η 6个-anions可逆异构化在复合物III族,V和VI的情况下,成η