Synthesis, characterization and biological evaluation of new manganese metal carbonyl compounds that contain sulfur and selenium ligands as a promising new class of CORMs
作者:André L. Amorim、Marcos M. Peterle、Ana Guerreiro、Daniel F. Coimbra、Renata S. Heying、Giovani F. Caramori、Antonio L. Braga、Adailton J. Bortoluzzi、Ademir Neves、Gonçalo J. L. Bernardes、Rosely A. Peralta
DOI:10.1039/c9dt00616h
日期:——
Three new manganese carbonyl compounds with heavy atom donors were synthesized and their potential use as photoCORMS was evaluated. Interestingly, all compounds had an elusive binding mode, in which the ligands adopted a κ2-X coordination (where X = S or Se), confirmed both by X-ray crystallography and IR spectroscopy. The stability of the title compounds in the dark was determined by monitoring the
合成了三种具有重原子供体的新型锰羰基化合物,并评估了它们作为 photoCORMS 的潜在用途。有趣的是,所有化合物都具有难以捉摸的结合模式,其中配体采用 κ 2-X 配位(其中 X = S 或 Se),由 X 射线晶体学和红外光谱证实。标题化合物在黑暗中的稳定性通过监测化合物在二氯甲烷和乙腈中的紫外光谱变化来确定。这些研究表明,在配位溶剂中,通过溶剂分子与金属中心键合的溴化物发生了交换,紫外和红外光谱的变化以及 DFT 分析证明了这一点。进行 EDA 和自然键序分析以评估重原子供体在化合物第一配位球中的影响。380 nm 处的光激发表明所有化合物都释放了所有三种 CO,如红外光谱检测到的光产物所示。此外,
Synthesis of heterocycles. Construction of the 1-azabicyclo[2.2.1]heptyl system by sequential ring-closure of acyclic β-ammonio substituted radicals
作者:Ernest W Della、Andrew M Knill
DOI:10.1016/0040-4039(96)01231-2
日期:1996.8
Treatment of an irradiated solution of 1-methyl-1-(2-propynyl)-1-bis(2-phenylselenylethyl)ammonium iodide in tert-amyl alcohol with tributyltin hydride is found to be an effective procedure for the synthesis of 1,4-dimethyl-1-azoniabicyclo-[2.2.1]heptaneiodide. Attachment of a trimethylsilyl or phenyl substituent to the terminal carbon of the triple bond in the alkynyl salt leads to bridgehead-substituted
Cu(<scp>ii</scp>) complexes with tridentate sulfur and selenium ligands: catecholase and hydrolysis activity
作者:Daniele Cocco Durigon、Marcos Maragno Peterle、Adailton João Bortoluzzi、Ronny Rocha Ribeiro、Antonio Luiz Braga、Rosely Aparecida Peralta、Ademir Neves
DOI:10.1039/d0nj02806a
日期:——
Two new copper(ii) mononuclear complexes (CSe and CS) were synthesized and characterized by the following techniques: X-ray crystallography, elemental analysis, IR, EPR and UV-vis spectroscopies, conductimetric analysis and mass spectrometry.
A highly sensitive and selective fluorescent chemosensor SC1 for Ag+ based on a coumarinâSe2N chelating conjugate has been synthesized and characterized. Due to inhibiting a photoinduced electron transfer (PET) quenching pathway, a fluorescent enhancement factor of 4-fold is observed under the binding of the Ag+ cation to the chemosensor SC1 with a detection limit down to the 10â8 M range.
Design and synthesis of organochalcogen (Se or Te) based multifunctional derivatives: structural determination and dynamic behavior of 2-chloro-4,6-bis(phenylselenoethylamino)-1,3,5-triazines
作者:Marilyn Daisy Milton、Naveen Kumar、Sarbjot Singh Sokhi、Sarika Singh、Monika Maheshwari、Jai Deo Singh、Minakshi Asnani、Raymond J. Butcher
DOI:10.1016/j.tetlet.2004.09.132
日期:2004.11
A novel class of multifunctional and multinucleate chalcogen (selenium and tellurium) containing derivatives (1–10) has been developed based on sequential chloride substitution of 2,4,6-trichloro-1,3,5-triazine with chalcogen-bearing amines. The structure of compound 1 has been determined in the solid state by X-ray crystallography.