Structure and electronics in dimeric boron π expanded azine and salphen complexes
作者:Laura A. Crandall、Mahesh B. Dawadi、Tailon Burrell、Adwoa Odoom、Christopher J. Ziegler
DOI:10.1039/c6pp00479b
日期:2017.5
Although boron-based fluorophores incorporating nitrogenous chelating ligands have received much attention, there has been little work on examples of boron–salphen and azine derivatives. In this report, we present several π expanded boron salphen type complexes, incorporating both bis(2-hydroxynaphthaldehyde)azine as well as ortho, meta and para variants of the analogous 2-hydroxynaphthaldehyde salphen
Polymer complexes. LXXIV. Synthesis, characterization and antimicrobial activity studies of polymer complexes of some transition metals with bis-bidentate Schiff base
作者:S.G. Nozha、Sh.M. Morgan、S.E. Abu Ahmed、M.A. El-Mogazy、M.A. Diab、A.Z. El-Sonbati、M.I. Abou-Dobara
DOI:10.1016/j.molstruc.2020.129525
日期:2021.3
coordination through ON NO donor system. The electronic spectra along with magnetic data suggest octahedral geometry for polymercomplexes. The XRD patterns of the ligand and its polymercomplexes showed the polycrystalline natures. The ligand and its complexes were studied for their microbial activity against some bacteria and fungi. Our results indicated that ligand and polymercomplex (3) have higher effect
摘要 已合成了 N,N`-1,4-亚苯基(2-羟基萘基亚胺)的铜 (II)、钴 (II)、镍 (II)、锰 (II) 和镉 (II) 聚合物配合物。席夫碱和聚合物配合物的结构已通过元素分析、光谱(FT-IR、UV-Vis、1H NMR 和 ESR)、X 射线衍射、磁矩测量和摩尔电导表征。摩尔电导率数据表明螯合物是聚合物复合物 (1, 4 & 5) 的非电解质。分析数据支持 1:1 (M:L) 化学计量比。FT-IR 数据显示通过 ON NO 供体系统作为双二齿配位的配体功能。电子谱和磁性数据表明聚合物复合物为八面体几何形状。配体及其聚合物配合物的XRD图谱显示出多晶性质。研究了配体及其复合物对某些细菌和真菌的微生物活性。我们的结果表明配体和聚合物复合物(3)对金黄色葡萄球菌的作用比青霉素至少高9倍;这种效果随着浓度的增加而增加。分子对接用于预测配体与金黄色葡萄球菌晶体结构(3q8u)和大肠
The preparation and characterization of some uranium(VI) complexes of N,N′-bis(o-hydroxyaryl) aldimino Schiff bases
作者:Birgül Erk、Necla Gündüz
DOI:10.1016/s0020-1693(00)83941-9
日期:1990.1
Abstract Some of the stable chelate complexes of uranium(VI) were prepared with alkyl or aryl (R) bridged o,o′-dihydroxyaryl Schiffbases of HOC6H4CHNRNCHC6H4OH and HOC10H6CHNRNCHC10H6OH (R: (CH2)n; (C2H4NH)n(C2H4); (C6H4CH2C6H4; o, m, p-C6H4). Their structures were determined by UV, IR and elemental analyses. It is evident that strong ligand-ion interaction usually caused the polymeric
作者:A.Z. El-Sonbati、M.A. El-Mogazy、S.G. Nozha、M.A. Diab、M.I. Abou-Dobara、A.M. Eldesoky、Sh.M. Morgan
DOI:10.1016/j.molstruc.2021.131498
日期:2022.1
was found that the mixedligandcomplex (5) is more active than other mixedligandcomplexes and penicillin G against Bacillus cereus, Staphylococcus aureus, Klebsiella pneumoniae and Pseudomonas sp. The mixedligandcomplex (5) is more active than the ligand and other mixedligandcomplexes and miconazole against Aspergillus niger. The inhibition efficiency of the prepared ligand (H2L) against the
Cu(II)、Co(II)、Ni(II)、Mn(II) 和 Cd(II) 与 N,N'-1,4-亚苯基(2-羟基萘亚胺)的混合配体络合物 (H 2 L)已制备作为主要配体和 4-氨基安替比林 (4-AAp) 作为次要配体。新形成的配合物使用元素分析、磁化率、摩尔电导、1 H NMR、UV-Vis.、FTIR、X 射线衍射、质量、热分析和 ESR 技术进行表征。经元素分析,数据揭示形成[2:1:2][M:H 2L:4-AAP]复合物。通过红外分光光度法研究了 Cu(II)、Ni(II)、Co(II)、Mn(II) 和 Cd(II) 与配体之间的键合模式。对于所有化合物,混合配体配合物的电子吸收光谱和磁矩测量表明中心金属离子周围存在扭曲的八面体几何形状,而阴离子 X -位于轴向位置。发现配体通过羰基(二级配体)的氮原子和氧原子以中性双齿方式表现,而 H 2L(主要配体)通过氮和 OH 基团配位作为中性配体。FT-IR
Synthesis of phosphate and silane-based conjugated polymers derived from bis-azomethine: Photophysical and thermal characterization
作者:Süleyman Çulhaoğlu、Feyza Kolcu、İsmet Kaya
DOI:10.1016/j.reactfunctpolym.2021.104978
日期:2021.9
In the first step, two Schiff base monomers, SBs with two hydroxyl functional groups were synthesized as a result of a condensation reaction between diamine and aldehyde. Then, Schiff bases were polymerized by HCl elimination between hydroxyl groups of the SBs and chlorine of phenyl dichlorophosphate (P) or dichlorodiethylsilane (Si) to obtain two different polyazomethines for each. FT-IR, 1H NMR, 13C
在这项工作中研究了包括磷酸根和硅烷基团的聚偶氮甲碱。在第一步中,由于二胺和醛之间的缩合反应,合成了两种席夫碱单体,即具有两个羟基官能团的 SB。然后,席夫碱通过 SB 的羟基与二氯磷酸苯酯 (P) 或二氯二乙基硅烷 (Si) 的氯之间的 HCl 消除进行聚合,以获得两种不同的聚偶氮甲碱。FT-IR、1 H NMR、13 C NMR和热分析用于表征合成的SB、P-聚偶氮甲碱和Si-聚偶氮甲碱。光学带隙值 ( E g) 合成的 P-polyazomethines 和 Si-polyazomethines 使用 UV-Vis 分光光度计计算。溶剂对 P-polyazomethines 和 Si-polyazomethines 吸收的影响的研究也包括在这项工作中。合成的聚偶氮甲碱的低带隙可作为用于生产电子和光电材料的半导体材料进行评估。光致发光 (PL) 测量表明,尽管 Si P1的响应具有白光发射特性,但