possible. The crystal structures of compounds 2–4 showed, in all cases, distorted tetrahedral geometries about the Co, built by two halogen atoms and two nitrogen atoms of the α-diimine ligand. Compounds 3 and 4, as well as [CoCl2(o,o′,p-Me3C6H2-DAB)] (1a), and [CoCl2(o,o′-iPr2C6H3-DAB)] (2a), were activated by methylaluminoxane (MAO) and tested as catalysts for ethylene polymerisation, showing low catalytic
                                    通过无
水CoCl 2或CoI 2与相应的α-二
亚胺配体在CH 2 Cl 2中直接反应合成一系列[CoX 2(α-二
亚胺)]型
钴(II)化合物:[CoI 2(ø,ø ',p -Me 3 c ^ 6 ħ 2 -
DAb)](1),[的Col 2(ø,ö ' -我
镨2 ç 6 ħ 3 -
DAb)](2),(其中Ar-
DAB = 1,4-双(芳基)-2,3-二甲基-1,4-二氮杂-
1,3-丁二烯)和[CoCl 2(o,o ',p -Me 3 c ^ 6 ħ 2 -BIAN)](3),[
氯化钴2(ø,ö ' -我
镨2 ç 6 ħ 3 -BIAN)](4),和[的Col 2(ø,ö ' -我
镨2 ç 6 H 3 -BIAN)](5)(其中Ar-BIAN =双(芳基)ac
萘醌二
亚胺)。所有化合物均尽可能通过元素分析,红外光谱,质谱和X射线衍射进行表征。化合物的晶体结构2 - 4表明,在所有情况下,扭曲关于