Chromium(VI) Bisimido Dichloro, Bisimido Alkylidene, and Chromium(V) Bisimido Iodo N‐Heterocyclic Carbene Complexes

Reaction of CrCl2(N-tBu)2 with 1,3-dimethylimidazol-2-ylidene (IMe), 1,3-dimethyl-4,5-dichloroimidazol-2-ylidene (IMeCl2), 1,3-di(2-propyl)imidazol-2-ylidene (IPr), 1,3-dimesitylimidazol-2-ylidene (IMes) and 1,3-bis(2,6-(2-Pr)2C6H3)imidazol-2-ylidene (IDipp) yields the corresponding N-heterocyclic carbene (NHC) adducts CrCl2(IMe)(N-tBu)2 (1), CrCl2(IMeCl2)(N-tBu)2 (2), CrCl2(IPr)(N-tBu)2 (3), CrCl2(IMes)(N-tBu)2 (4) and CrCl2(IDipp)(N-tBu)2 (5). Likewise, reaction of CrCl2(N-2,6-(2-Pr)2C6H3)2 and CrCl2(N-adamantyl)2 with IMes yields CrCl2(N-2,6-(2-Pr)2C6H3)2(IMes) (6) and CrCl2(N-adamantyl)2(IMes) (7), respectively. Reaction of CrCl2(N-tBu)2 with the bidentate NHCs 1-R-3-(1-(2-LiO-C6H4))imidazol-2-ylidene yields the corresponding pentacoordinated Cr (VI) complexes CrCl2(1-R-3-(1-(2-O-C6H4))imidazol-2-ylidene)2C6H3)2(IMes) (R = 2,4,6-(CH3)3C6H2, 8), (R = tBu, 9), (R = 2-phenyl-C6H4, 10). Reaction of the chromium (VI) complex Cr(N-2,6-(2-Pr)2-C6H3)2(CH2C(CH3)3)2 with 1,3-dimethylimidazol-2-ylidene.AgI yields the bimetallic silver adduct of the chromium alkylidene complex (11) along with the tetrahedral chromium (V) complex CrI(N-2,6-(2-Pr)2-C6H3)2(1,3-dimethylimidazol-2-ylidene) (12). Compounds 1 – 4, 7, 9 – 12 were characterized by single crystal X-ray analysis. Finally, the chromium (VI) bisimido-amido complexes 13 – 14 bearing the N-6-(2-(diethylboryl)phenyl)pyridyl-2-yl-motif are reported. .All primary data files and processed data of the journal article from Buchmeiser group. Chromium(VI) Bisimido Dichloro, Bisimido Alkylidene, and Chromium(V) Bisimido Iodo N‐Heterocyclic Carbene Complexes

CrCl2(N-tBu)2与1,3-二甲基咪唑-2-亚胺（IMe）、1,3-二甲基-4,5-二氯咪唑-2-亚胺（IMeCl2）、1,3-二(2-丙基)咪唑-2-亚胺（IPr）、1,3-二对甲苯基咪唑-2-亚胺（IMes）以及1,3-双(2,6-(2-丙基)二苯并[1,3]噻唑)咪唑-2-亚胺（IDipp）反应，生成相应的N-杂环卡宾（NHC）加成物CrCl2(IMe)(N-tBu)2（1）、CrCl2(IMeCl2)(N-tBu)2（2）、CrCl2(IPr)(N-tBu)2（3）、CrCl2(IMes)(N-tBu)2（4）和CrCl2(IDipp)(N-tBu)2（5）。同理，CrCl2(N-2,6-(2-Pr)2C6H3)2与CrCl2(N-adamantyl)2与IMes反应，分别生成CrCl2(N-2,6-(2-Pr)2C6H3)2(IMes)（6）和CrCl2(N-adamantyl)2(IMes)（7）。CrCl2(N-tBu)2与双齿NHCs 1-R-3-(1-(2-LiO-C6H4))咪唑-2-亚胺反应，生成相应的五配位铬（VI）配合物CrCl2(1-R-3-(1-(2-O-C6H4))咪唑-2-亚胺)2C6H3（R = 2,4,6-(CH3)3C6H2, 8）、(R = tBu, 9)、(R = 2-苯基-C6H4, 10）。铬（VI）配合物Cr(N-2,6-(2-Pr)2-C6H3)2(CH2C(CH3)3)2与1,3-二甲基咪唑-2-亚胺.AgI反应，生成铬烷基亚胺配合物的双金属银加成物（11）以及四面体铬（V）配合物CrI(N-2,6-(2-Pr)2-C6H3)2(1,3-二甲基咪唑-2-亚胺)（12）。化合物1-4、7、9-12经单晶X射线分析表征。最后，报告了携带N-6-(2-(二乙基硼基)苯基)吡啶-2-基结构的铬（VI）双亚胺酰胺配合物13-14。所有原始数据文件和经过处理的期刊文章数据均来自布赫迈瑟尔小组。铬（VI）双亚胺二氯化物、双亚胺烷基化物以及铬（V）双亚胺碘化物N-杂环卡宾配合物。