Direct ring functionalisation of 1,4,7-trimethyl-1,4,7-triazacyclononane and its application in the preparation of functional [L2Mn2O3]-type complexes
摘要:
Treatment of 1,4,7-trimethyl-1,4,7-triazacyclononane (metacn) with N-bromosuccinimide (NBS) gave a bicyclic ammonium intermediate, which was ring-opened to 2-cyano-1,4,7-trimethyl-1,4,7-triazacyclononane by reaction with potassium cyanide. Reduction to the amine followed by reaction with anhydrides gave amides, which could subsequently be converted to dinuclear tris-mu-oxo manganese complexes. (c) 2006 Elsevier Ltd. All rights reserved.
Revealing the Structure of Transition Metal Complexes of Formaldoxime
作者:Ivan S. Golovanov、Roman S. Malykhin、Vladislav K. Lesnikov、Yulia V. Nelyubina、Valentin V. Novikov、Kirill V. Frolov、Andrey I. Stadnichenko、Evgeny V. Tretyakov、Sema L. Ioffe、Alexey Yu. Sukhorukov
DOI:10.1021/acs.inorgchem.0c03362
日期:2021.4.19
X-ray analysis, [M(tacn)(tfo)]+ cation has a distorted adamantane-like structure with the metal ion being coordinated by three oxygen atoms of deprotonated tfoH3 ligand. The metal has a formal +4 oxidation state, which is atypical for organic complexes of iron and nickel. Electronic structure of [M(tacn)(tfo)]+ cations was studied by XPS, NMR, cyclic (CV) and differential pulse (DPV) voltammetries, Mössbauer
Improved syntheses, structures, spectral and electrochemical properties of [Mn<sub>2</sub><sup>III</sup>(µ-O)(µ-O<sub>2</sub>CMe)<sub>2</sub>L<sub>2</sub>]<sup>2+</sup>and [Mn<sub>2</sub><sup>IV</sup>(µ-O)<sub>3</sub>L<sub>2</sub>]<sup>2+</sup>complexes. Two homologous series derived from eight N-substituted 1,4,7-triazacyclononanes
作者:Jean H. Koek、Stephen W. Russell、Lodewijk van der Wolf、Ronald Hage、Johann B. Warnaar、Anthony L. Spek、Judy Kerschner、Lisa DelPizzo
DOI:10.1039/dt9960000353
日期:——
A series of eight N-substituted 1,4,7-triazacyclononanes L has been prepared having combinations of hydrogen, methyl, ethyl or propyl substituents on the three nitrogens. From the monoprotonated macrocycles dinuclear manganese complexes [Mn2III(µ-O)(µ-O2CMe)2L2]X2(X = ClO4 or PF6) were prepared under anhydrous conditions in high yield. A relationship between the absorption bands and the electrochemical
已经制备了一系列八个N-取代的1,4,7-三氮杂环壬烷L,在三个氮原子上具有氢,甲基,乙基或丙基取代基的组合。从单质子化的大环化合物的双核锰配合物[锰2 III(μ-O)(μ-O 2 CME)2大号2 ] X 2(X = CLO 4或PF 6)以高收率无水的条件下制备。已经观察到含有各种甲基取代的L的配合物的吸收带与电化学性质之间的关系。从Me x Et 3– x-和Pr 3从L,锰(II)盐和抗衡离子开始,制备取代的大环三氧桥连的双核双锰锰配合物[Mn 2 IV(µ-O)3 L 2 ] 2+,然后用碱性过氧化氢处理。该反应的产率取决于大环上N处的取代基的大小。[Mn 2 IV(μ-O)3 L 2 ] [PF 6 ] 2 ·0.5KPF 6的晶体结构已确定(L = 1,4,7-三甲基-1,4,7-三氮杂环壬烷)。这揭示了该核几乎与已知的三乙基类似物的核相同,其中乙基取代基的甲基朝外指向以最小化空间相互作用。Mn-Mn距离为2
[EN] POLYCATIONIC AMPHIPHILES AND POLYMERS THEREOF AS ANTIMICROBIAL AGENTS AND METHODS USING SAME<br/>[FR] COMPOSÉS AMPHIPHILES POLYCATIONIQUES ET LEURS POLYMÈRES UTILISABLES EN TANT QU'AGENTS ANTIMICROBIENS ET LEURS PROCÉDÉS D'UTILISATION
申请人:TEMPLE UNIVERSITY-OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION
公开号:WO2016172436A1
公开(公告)日:2016-10-27
The present invention includes novel polycationic amphiphilic compounds useful as antimicrobial agents. The present invention further includes novel polymers of polycationic amphiphilic compounds useful as antimicrobial agents. The present invention further includes methods useful for removing microorganisms and/or biofilm-embedded microorganisms from a surface. The present invention further includes compositions and methods useful for preventing or reducing the growth or proliferation of microorganisms and/or biofilm-embedded microorganisms on a surface.
作者:Nico Adams、Henricus J. Arts、Paul D. Bolton、Dan Cowell、Stuart R. Dubberley、Nic. Friederichs、Craig M. Grant、Mirko Kranenburg、Andrew J. Sealey、Bing Wang、Paul J. Wilson、Martin Zuideveld、Alexander J. Blake、Martin Schröder、Philip Mountford
DOI:10.1021/om0603316
日期:2006.7.1
of 1 and 6 (linked by either the macrocycle or imido ligand to a 1% cross-linkedpolystyrenesupport) and representative Me3[6]aneN3 solution phase systems Ti(NR)(R3[6]aneN3)Cl2 (R = Me or n-dodecyl) were also synthesized. At ambient temperature, solution phase Me3[9]aneN3 catalyst systems were more active for ethylenepolymerization (methyl aluminoxane (MAO) cocatalyst) than their solid phase-supported
Metal-organic frameworks containing nitrogen-donor ligands for efficient catalytic organic transformations
申请人:The University of Chicago
公开号:US10647733B2
公开(公告)日:2020-05-12
Metal-organic framework (MOFs) compositions based on nitrogen donor-based organic bridging ligands, including ligands based on 1,3-diketimine (NacNac), bipyridines and salicylaldimine, were synthesized and then post-synthetically metalated with metal precursors, such as complexes of first row transition metals. Metal complexes of the organic bridging ligands could also be directly incorporated into the MOFs. The MOFs provide a versatile family of recyclable and reusable single-site solid catalysts for catalyzing a variety of asymmetric organic transformations. The solid catalysts can also be integrated into a flow reactor or a supercritical fluid reactor.