描述了由在主链碳原子上包含三联苯取代基的空间庞大的mid酰胺配体所支撑的铝络合物。已使用在2,6-苯基环的邻位具有不同取代基的三个基配体:[2,6-(2,4,6-Me 3 Ph)2 Ph] C(NH- i- Pr)N -我-Pr(大号我ħ),[2,6-(2,4,6-异镨3的pH)2 PH] C(NH-我-Pr)N-我-Pr(大号镨ħ),和[2,6-(4- t -BuPh)2 Ph] C(NH- i -Pr)N- i-Pr(L Bu H)]。生成了单酰胺基二烷基络合物(L R AlMe 2),并研究了它们与甲基化物提取试剂的反应以产生阳离子烷基铝物质。另外,合成了in化二氯化铝(L Me AlCl 2),并伴随形成意外的am盐[L Me H 2 ] [EtAlCl 3 ]。介绍了代表性的二甲基和二氯物质以及后者的盐的晶体结构。
Mono-amidinate complexes stabilized by a new sterically-hindered amidine†
作者:Joseph A. R. Schmidt、John Arnold
DOI:10.1039/a905620c
日期:——
A novel amidinate ligand incorporating a bulky terphenyl group is used to prepare unusual, low-coordinate lithium and yttrium mono-amidinate complexes.
一种包含大体苯基的新的胺酰胺配体用于制备不寻常的低配位锂和钇单胺酰胺配合物。
Neutral and Cationic Aluminum Complexes Supported by Sterically Bulky Amidinate Ligands
作者:Joseph A. R. Schmidt、John Arnold
DOI:10.1021/om0201011
日期:2002.5.1
-i-Pr (LBuH)]. Monoamidinate dialkyl complexes were generated (LRAlMe2), and their reactions with methide abstraction reagents to yield cationic aluminum alkyl species were studied. Additionally, an amidinate aluminum dichloride was synthesized (LMeAlCl2), with concomitant formation of an unexpected amidinium salt, [LMeH2][EtAlCl3]. The crystal structures of representative dimethyl and dichloro species
描述了由在主链碳原子上包含三联苯取代基的空间庞大的mid酰胺配体所支撑的铝络合物。已使用在2,6-苯基环的邻位具有不同取代基的三个基配体:[2,6-(2,4,6-Me 3 Ph)2 Ph] C(NH- i- Pr)N -我-Pr(大号我ħ),[2,6-(2,4,6-异镨3的pH)2 PH] C(NH-我-Pr)N-我-Pr(大号镨ħ),和[2,6-(4- t -BuPh)2 Ph] C(NH- i -Pr)N- i-Pr(L Bu H)]。生成了单酰胺基二烷基络合物(L R AlMe 2),并研究了它们与甲基化物提取试剂的反应以产生阳离子烷基铝物质。另外,合成了in化二氯化铝(L Me AlCl 2),并伴随形成意外的am盐[L Me H 2 ] [EtAlCl 3 ]。介绍了代表性的二甲基和二氯物质以及后者的盐的晶体结构。
Synthesis and characterization of a series of sterically-hindered amidines and their lithium and magnesium complexes
作者:Joseph A. R. Schmidt、John Arnold
DOI:10.1039/b202235b
日期:2002.7.10
A series of sterically hindered amidinate ligands containing terphenyl substituents at the carbon atom of the amidinate backbone have been synthesized in high yields; their lithium derivatives were prepared, including the first two examples of monodentate lithium amidinates. Additionally, two independent routes to magnesium amidinates have been developed, yielding both mono- and bis-amidinate magnesium complexes. The presence of substituents at the 2′, 6′, 2″, and 6″ positions on the terphenyl moieties attached to the amidinate backbone induces a strong steric effect. In the free-base amidines, equilibria between E-syn and Z-syn isomers were dependent upon the size of these groups, while in the lithium amidinates, the steric bulk of these ligands led to the formation of the first monodentate lithium amidinates. Finally, in the magnesium amidinates, short C–N bond lengths and reduced N–C–N bond angles
were observed within the amidinate backbone.