Asymmetrically substituted triazenes as poor electron donor ligands in the precursor chemistry of iron(<scp>ii</scp>) for iron-based metallic and intermetallic nanocrystals
作者:Khaled Soussi、Shashank Mishra、Erwann Jeanneau、Jean-Marc M. Millet、Stéphane Daniele
DOI:10.1039/c7dt02755a
日期:——
mine). A range of physico-chemical studies such as FT-IR, TG-DTA, 1H & 13C NMR, mass spectrometry, single crystal X-ray structure analysis, cyclic voltammetry and Mössbauer spectroscopy were used to characterize these newly synthesized ligands and FeII derivatives. One representative derivative [Fe(t-BuN3Et)2(TMEDA)] was evaluated as a precursor for the synthesis of metallic Fe0 and intermetallic Al13Fe4
由于三氮烯配体能够提供Fe 0纳米粒子的无氧分子前体,因此首次在前体化学中引入了三氮烯配体。为此,我们合成了在1,3-N中心具有不同烷基取代基的新型不对称三氮烯配体t -BuN N-NHR(R = Et,i-Pr,n -Bu)和对称配体t -BuN N-NH t -Bu,并用它们来开发新型的杂配性单体Fe II三叠氮化物衍生物[Fe(t -BuN 3 R)2(TMEDA)](其中TMEDA =四甲基乙二胺)。一系列的物理化学研究,例如FT-IR,TG-DTA,1H&13 C NMR,质谱,单晶X射线结构分析,循环伏安法和Mössbauer光谱用于表征这些新合成的配体和Fe II衍生物。评价一种代表性的衍生物[Fe(t- BuN 3 Et)2(TMEDA)]作为通过化学溶液沉积法合成金属Fe 0和金属间Al 13 Fe 4纳米颗粒的前体。
Pseudo-rotation of spin-labelled phosphoranes formed by cyclisation of triazenylphosphoranyl radicals
作者:John C. Brand、Brian P. Roberts
DOI:10.1039/c39810001107
日期:——
Triazenylphosphoranylradicals undergo cyclisation to give paramagnetic phosphoranes and the rapid pseudo-rotation of the latter can be monitored by e.s.r. spectroscopy.
Abstract A series of Ti(IV) and Nb(V) complexes with new asymmetric triazine ligands HN3tBuR (R = Et, iPr, tBu) featuring different alkyl substituents at 1,3-N centers was synthesized and characterized by FTIR, 1H and 13C NMR spectroscopy as well as single crystal X-ray structure on a representative titanium complex and then tested for volatility and thermal stability relevant to vapor-phase film growth
METALLKOMPLEXE MIT TRIAZENIDOLIGANDEN UND DEREN VERWENDUNGEN ZUR ABSCHEIDUNG VON METALLEN AUS DER GASPHASE
申请人:UMICORE AG & CO. KG
公开号:EP3498721A1
公开(公告)日:2019-06-19
Die Erfindung betrifft die Verwendung eines Metallkomplexes, der mindestens einen Liganden der Formel R1-N3-R2 aufweist, wobei R1 und R2 Kohlenwasserstoffreste sind, zum Abscheiden des Metalls oder einer Verbindung des Metalls aus der Gasphase. Die Erfindung betrifft außerdem Verfahren zur Abscheidung von Metallen aus den Metallkomplexen, sowie Metallkomplexe, substituierte Triazenverbindungen und Verfahren zu deren Herstellung.