Reaction of the amido−niobium complex [Nbη5-C5H4SiMe2(NHtBu)}(NtBu)Cl(NHtBu)] (2) with 1 equiv of CNAr (Ar = 2,6-Me2C6H3) in hexane gave the iminocarbamoyl compound [Nbη5-C5H4SiMe2(NHtBu)}(NtBu)Clη2-C(NHtBu)NAr}] (5) in quantitative yield at room temperature, whereas heating to 120 °C was required when similar reactions were carried out with the bridged silyl amido compounds [Nbη5-C5H4SiMe2(η1-NtBu)}(NtBu)Cl]
的反应中的酰
氨基-
铌复合物[
铌η 5 -C 5 H ^ 4森达2(NH吨丁基)}(N吨丁基)
氯(NH吨丁基)](2)与1个当量CNAR(AR = 2, 6-ME 2 ç 6 ħ 3)的己烷,得到iminocarbamoyl化合物[
铌η 5 -C 5 H ^ 4森达2(NH吨丁基)}(N吨丁基)
氯η 2 -C(NH吨丁基)NAR }](5)在室温下定量产率,而加热至120℃时的类似反应,用进行了所需要的桥连的甲
硅烷基酰
氨基的化合物[
铌η 5 -C 5 H ^ 4森达2(η 1 -N吨丁基)}( ñ吨丁基)CL](3)和[Nb的η 5 -C 5 H ^ 4森达2(η 1 -N吨丁基)}(N吨卜)(NH吨丁基)](4),得到桥接[
铌η 5 -C 5 H ^ 4森达2(N吨丁基)-η 2 - (C NAR)}(N吨丁基)CL](6)和终端iminocarbamoyl [
铌η 5 -C