نتایج جستجو برای: complex cobalt ii

تعداد نتایج: 1332367  

Journal: :Molbank 2023

This short note describes the synthesis of a novel compound, 6,6′-di-(8″-quinoline)-2,2′-bypyridine (2), that bears bipyridyl backbone and quinoline donors. Compound 2 coordinates with cobalt(II) ion in tetradentate manner affords complex [CoII(2)(TfO)2], whose molecular structure has been identified by single crystal X-ray diffraction crystallographic analysis. The coordination features were c...

2007
Ming Xue Li Jing Zhou Jing Ping Wang

The title complex [Co(C7H8N5S)2]·2H2O has been synthesized and characterized by IR and UV spectral studies. The structure of the compound has been determined by single-crystal X-ray diffraction. The complex consists of discrete monomeric molecules with octahedrally hexacoordinate cobalt(II) ions, where two acetylpyrazine thiosemicarbazones act as NNS tridentate ligands coordinated to the centra...

Journal: :Bulletin of the Chemical Society of Japan 1965

Journal: :Inorganic chemistry 2002
Sachindranath Paul Anil Kumar Barik Shie Ming Peng Susanta Kumar Kar

Copper(II) complexes of a novel pyrazole containing porphyrinogen and cobalt(III) and zinc(II) complexes of a pyrazole containing tripodal ligand having N-donor atoms have been investigated. 5-Methyl-3-formylpyrazole (MPA) on reaction with copper(II) nitrate or perchlorate in the presence of tris(2-aminoethyl)amine (tren) forms novel pyrazole-based porphyrinogen complexes [Cu(T(3)-porphyrinogen...

Journal: :Dalton transactions 2015
Alexander V Dolganov Alexander S Belov Valentin V Novikov Anna V Vologzhanina Galina V Romanenko Yulia G Budnikova Genrikh E Zelinskii Michail I Buzin Yan Z Voloshin

Template condensation of dibromoglyoxime with n-butylboronic acid on the corresponding metal ion as a matrix under vigorous reaction conditions afforded iron and cobalt(ii) hexabromoclathrochelates. The paramagnetic cobalt clathrochelate was found to be a low-spin complex at temperatures below 100 K, with a gradual increase in the effective magnetic moment at higher temperatures due to the temp...

2012
V. S. Anusuya Devi V. Krishna Reddy

Optimized and validated spectrophotometric methods have been proposed for the determination of iron and cobalt individually and simultaneously. 2-hydroxy-1-naphthaldehyde-p-hydroxybenzoichydrazone (HNAHBH) reacts with iron(II) and cobalt(II) to form reddish-brown and yellow-coloured [Fe(II)-HNAHBH] and [Co(II)-HNAHBH] complexes, respectively. The maximum absorbance of these complexes was found ...

2005
Xile Hu Karsten Meyer

In an effort to develop new tripodal N-heterocyclic carbene (NHC) ligands for small molecule activation, two new classes of tripodal NHC ligands TIME and TIMEN have been synthesized. The carbon-anchored tris(carbene) ligand system TIME (R = Me, t-Bu) forms bior polynuclear metal complexes. While the methyl derivative exclusively forms trinuclear 3:2 complexes [(TIME)2M3] 3+ with group 11 metal ...

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