Qualitative Analysis of the Stability of the Oxazine Ring of Various Benzoxazine and Pyridooxazine Derivatives with Proton Nuclear Magnetic Resonance Spectroscopy
作者:Gerard P. Moloney、David J. Craik、Magdy N. Iskander
DOI:10.1002/jps.2600810721
日期:1992.7
3-benzoxazine and 3,4-dihydro-1,3-pyridooxazine derivatives was synthesized, and the hydrolysis of the derivatives was studied with proton nuclearmagneticresonancespectroscopy. The oxazine derivatives underwent various degrees of hydrolysis when H2O was added to dimethyl sulfoxide solutions of the compounds. The rates and extents of decomposition of the oxazine ring systems depended on the electronic effects
Some dichloro Schiff base complexes of molybdenum(IV)
作者:Chi-Tat Kan
DOI:10.1039/dt9820002309
日期:——
A series of molybdenum(IV) complexes of the type [MoCl2L2], where HL represents N-phenylsalicylideneimine and its derivatives, have been synthesised by reaction of [MoCl2(acac)2](acac = acetylacetonate) or [MoCl4(MeCN)2] with related Schiff bases. The spectroscopic properties of these six-co-ordinate d2 complexes are discussed.
Novel lithium Schiff-base cluster complexes as electron injectors: synthesis, crystal structure, thin film characterisation and their performance in OLEDs
作者:Poopathy Kathirgamanathan、Sivagnanasundram Surendrakumar、Juan Antipan-Lara、Seenivasagam Ravichandran、Y. F. Chan、Vincent Arkley、Subramanium Ganeshamurugan、Muttulingham Kumaraverl、Gnanamoly Paramswara、Arumugam Partheepan、Vanga R. Reddy、Daniel Bailey、Alexander J. Blake
DOI:10.1039/c2jm15114f
日期:——
A set of novel lithium Schiff base cluster compounds has been synthesised and characterised for the first time and tested as electron injectors in OLED devices. Their electrical, electronic, thermal and optical properties have been investigated and compared with the industry standards LiF and lithium quinolinolate (LiQ). Amongst the compounds tested, lithium 2-((o-tolylimino)methyl) phenolate was found to enhance the efficiency of OLEDs by 69% compared to LiF and 15% compared to LiQ. The same electron injector was found to extend the lifetimes of OLEDs by six-fold compared to LiF and 4.3-fold compared to LiQ respectively. The crystal structure of the parent compound, lithium 2-((phenylamino)methyl)phenolate reveals that the compound is tetrameric in contrast to hexameric LiQ. Substituting the methyl group with fluorine causes a remarkable depression of the HOMO and LUMO levels by up to 1.2 eV. Analysis of current density vs. voltage characteristics of single-layer devices for Li–Al/electron injector/Li–Al and Al/electron injector/Al reveals that both sets of devices are operating as electron-only devices indicating that the formation of free lithium is the cause of enhanced electron injection, but either the energetic aluminium atoms (as proposed previously by other workers) or energetic lithium complexes on an aluminium surface (as we have demonstrated in this paper) are all that is required for efficient electron injection.
Synthesis, crystal structure and electronic properties of bis(N-2-bromophenyl-salicydenaminato)copper(II) complex
作者:Rasoul Vafazadeh、Vahid Hayeri、Anthony C. Willis
DOI:10.1016/j.poly.2010.02.030
日期:2010.5
A new series of complexes of the type bis(N-substituted-salicydenaminato)copper(II) (1–9), have been synthesized and characterized by IR, UV–Vis and elemental analysis methods. The molecular structure of bis(N-2-bromophenyl-salicydenaminato)copper(II) (6), was determined using X-ray crystallography. There are two independent molecules in the structure. Each shows a neutral, mononuclear, four-coordinate
合成了一系列新的双(N-取代-水杨酰胺基)铜(II)(1-9)型配合物,并通过红外,紫外-可见和元素分析方法对其进行了表征。使用X射线晶体学测定了双(N-2-溴苯基-水杨酰胺基)铜(II)(6)的分子结构。结构中有两个独立的分子。每个都显示一个中性,单核,四坐标,方形的反式Cu [N 2 O 2几何形状,并且每个Cu原子和连接原子是共面的。分子1的螯合N–Cu–O角为91.39(11)°,分子2的螯合N–Cu–O角为91.20(11)°,而非螯合的N–Cu–O角为88.61(11)和88.80(11)°,分别。反式-N-Cu-N和反式-O-Cu-O的键角为180°。铜(II)配合物(1–9)的电子吸收光谱表明,d–d能带取决于水杨基亚胺配体苯环上取代基的性质和位置。测量了各种溶剂的UV-Vis光谱,并报道了吸收光谱和溶剂介电常数之间的关系。
Bis(indenyl)titanium(IV) and zirconium(IV) complexes of monofunctional bidentate salicylidimines
作者:B. Khera、A.K. Sharma、N.K. Kaushik
DOI:10.1016/s0277-5387(00)84353-3
日期:1983.1
Abstract Dichlorobis(indenyl)-titanium(IV) and -zirconium(IV), (C9H7)2TiCl2 and (C9H7)2ZrCl2, react with bidentate Schiff bases such as salicylidene aniline, salicylidene-o-toluidine, salicylidene-m-toluidine and salicylidene-p-toluidine in a 1:1 molar ratio in refluxing tetrahydrofuran in the presence of triethylamine to yield complexes of the type (C9H7)2Ti(SB)Cl and (C9H7)2Zr(SB)Cl, respectively