<i>N</i>
,
<i>N′</i>
‐Bis(2,2′‐bipyridine‐6‐ylmethyl)‐2,2′‐biphenylenediamines: A Tuneable Ligand Scaffold for Room Temperature Fe
<sup>2+</sup>
SCO Complexes
作者:Holm Petzold、Silvio Heider
DOI:10.1002/ejic.201001139
日期:2011.3
reduction of 2,2′-diaminobiphenyls 5 with 6′- and 5′-substituted 6-carbaldehyde-2,2′-bipyridines 4 yielded N,N′-bis(2,2′-bipyridine-6-ylmethyl)-2,2′-biphenyl-enediamines 7, which were employed as hexadendate ligands with N6 donor sets in the synthesis of dicationic [Fe2+(7-κ6N)] complexes 8. Dependent on the substitution pattern the respective complexes are found in the HS state (8b and 8c) or show SCO behaviour
Substituted 2,2′-Bis(2-oxidobenzylideneamino)-4,4′-dimethyl-1,1′-biphenyl Complexes of Zinc
作者:Tareq M. A. Al-Shboul、Steffen Ziemann、Helmar Görls、Sven Krieck、Matthias Westerhausen
DOI:10.1002/zaac.201800404
日期:2019.2.15
4′‐dimethyl‐6,6'‐dibromo‐1,1′‐biphenyl with 2‐hydroxybenzaldehyde as well as 5‐methoxy‐, 4‐methoxy‐, and 3‐methoxy‐2‐hydroxybenzaldehyde yields 2,2′‐bis(salicylideneamino)‐4,4′‐dimethyl‐6,6′‐dibromo‐1,1′‐biphenyl (1a) as well as the 5‐, 4‐, and 3‐methoxy‐substituted derivatives 1b, 1c, and 1d, respectively. Deprotonation of substituted 2,2′‐bis(salicylideneamino)‐4,4′‐dimethyl‐1,1′‐biphenyls with diethylzinc
2,2'-二氨基-4,4'-二甲基-6,6'-二溴-1,1'-联苯与2-羟基苯甲醛以及5-甲氧基,4-甲氧基和3的缩合反应-甲氧基-2-羟基苯甲醛可产生2,2'-双(水杨基亚氨基)-4,4'-二甲基-6,6'-二溴-1,1'-联苯(1a)以及5-,4--和3-甲氧基取代的衍生物1b,1c和1d。用二乙基锌对取代的2,2'-双(水杨基亚氨基)-4,4'-二甲基-1,1'-联苯进行质子化,得到相应的取代锌2,2'-双(2-氧化苄叉亚氨基)-4,4'-二甲基-1,1'-联苯(2)或锌2,2'-双(2-氧化苄叉亚氨基)-4,4'-二甲基-6,6'-二溴-1,1'-联苯(3)。从CH 2 Cl 2和甲醇的混合物中重结晶会导致形成甲醇加合物。甲醇配体既可以作为路易斯碱与中心锌原子键合,也可以作为路易斯酸通过弱的OH ··· O氢桥与酚盐部分结合。无甲醇的配合物以带有中心Zn 2 O 2环的二聚体形式沉淀。
Synthesis, characterization and crystallographic determination of symmetrical Schiff bases and their Zn(II) metal complexes
作者:Taghreed M. A. Jazzazi、Tareq M. A. Al-Shboul、Mohammad El-khateeb、Hayato Moriyama、Yukihiro Yoshida、Hiroshi Kitagawa
DOI:10.1007/s11243-024-00578-7
日期:——
Two new tetradentate symmetrical Schiffbases derived from 2,2’-diamino-4,4’-dimethyl-1,1’-biphenyl or its dibromo substituted analog and 3,5-diiodosalicylaldehyde were synthesized. The reactions of these Schiffbases with zinc acetate generated the corresponding Zn(II)-complexes in which the zinc atom is bonded through the two azoimine nitrogen atoms in addition to the two oxygen atoms of the deprotonated