2,2′-Bipyridinium(1+) bromide monohydrate

Bowen, Richard J.; Fernandes, Manuel A.; Gitari, Patricia W.; Layh, Marcus

doi:10.1107/s0108270103028282

Cited by 8 publications

(9 citation statements)

References 7 publications

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“…The nitrogen atoms N3, N4, and N5, as well as the pyridinium cation, form hydrogen bonds to H 2 O molecules. In the tetrazolide anion, the N−N distances lie between 1.328 (3) 36 The coordination compound [Sm(N 4 bipy) 2 (OH)(H 2 O) 2 ] (1) was obtained by refluxing 3 equiv. of HN 4 bipy with samarium(III) nitrate in isopropyl alcohol.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

6-(Tetrazol-5-yl)-2,2′-bipyridine: A Highly Selective Ligand for the Separation of Lanthanides(III) and Actinides(III)

et al. 2014

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The coordination structure in the solid state and solution complexation behavior of 6-(tetrazol-5-yl)-2,2'-bipyridine (HN4bipy) with samarium(III) was investigated as a model system for actinide(III)/lanthanide(III) separations. Two different solid 1:2 complexes, [Sm(N4bipy)2(OH)(H2O)2] (1) and [Sm(N4bipy)2(HCOO)(H2O)2] (2), were obtained from the reaction of samarium(III) nitrate with HN4bipy in isopropyl alcohol, resuspension in N,N-dimethylformamide (DMF), and slow crystallization. The formate anion coordinated to samarium in 2 is formed by decomposition of DMF to formic acid and dimethylamine. Time-resolved laser fluorescence spectroscopy (TRLFS) studies were performed with curium(III) and europium(III) by using HN4bipy as the ligand. Curium(III) is observed to form 1:2 and 1:3 complexes with increasing HN4bipy concentration; for europium(III), formation of 1:1 and 1:3 complexes is observed. Although the solid-state samarium complexes were confirmed as 1:2 species the 1:2 europium(III) solution complex in ethanol was not identified with TRLFS. The determined conditional stability constant for the 1:3 fully coordinated curium(III) complex species is more than 2 orders of magnitude higher than that for europium(III) (log β3[Cm(N4bipy)3] = 13.8 and log β3[Eu(N4bipy)3] = 11.1). The presence of added 2-bromodecanoic acid as a lipophilic anion source reduces the stability constant for formation of the 1:2 and 1:3 curium(III) complexes, but no ternary complexes were observed. The stability constants for the 1:3 metal ion-N4bipy complexes equate to a theoretical separation factor, SF(Cm(III)/Eu(III)) ≈ 500. However, the low solubility of the HN4bipy ligand in nonpolar solvents typically used in actinide-lanthanide liquid-liquid extractions prevents its use as a partitioning extractant until a more lipophilic HN4bipy-type ligand is developed.

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Section: ■ Results and Discussionmentioning

confidence: 99%

6-(Tetrazol-5-yl)-2,2′-bipyridine: A Highly Selective Ligand for the Separation of Lanthanides(III) and Actinides(III)

et al. 2014

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“…respectively, which were both fully characterized including X-ray crystallography (the crystal structure of 2 was reported in ref. 14). Uchida et al 11d,12,15,16 have previously reported in closely related systems the formation of bipyridines from (1) the reaction of 2-pyridylphosphines or 2-pyridylphosphine oxides and chlorine followed by slow hydrolysis in alcohol or water and (2) the slow reaction of pyridylphosphine oxides or 1d with H 2 O (CH 3 OH) or H 2 O(CH 3 OH)/HCl, respectively.…”

Section: Synthesis and Properties Of [(2-py) 3 Pr]xmentioning

confidence: 96%

Synthesis and Characterization of Alkyltris(2-pyridyl)phosphonium Salts

Bowen

Fernandes

Gitari

et al. 2006

Phosphorus, Sulfur, and Silicon and the Related Elements

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Alkytris(2-pyridyl)phosphonium salts [(2-Py)were synthesised from (2-Py) 3 P and an excess of RCl. 1c and 1e were found to rapidly decompose in hot acetone to 2,2 -bipyridinium(+1) bromide 2 and (2-Py)P(O)(CH 2 Ph)C(OH)Me 2 3, respectively. A reaction mechanism for both products is proposed. All compounds were fully characterized, including X-ray crystallography for 1a and 3 with 1a being the first representative of this class of compounds characterized by this technique.

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“…Кроме того, каркас хозяина bipy не способствует окислению гостевых молекул SO 2 кислородом воздуха, в отличие от систем с участием Tris [138], алкиламинов [139,140], бензиламинов [141] и гексаметилендиамина [139] (выделены и структурно охарактеризованы продукты «мягкого» окисления S(IV) в S(VI) -«ониевые» сульфаты). С другой стороны, заметно более сильные по сравнению с SO 2 •H 2 O минеральные кислоты (H 2 SiF 6 [142], HBr [143] и HClO 4 [144]) ожидаемо протонируют bipy с образованием соответствующих «ониевых» солей.…”

Section: ван-дер-ваальсовы клатратыunclassified

Molecular Complexes of Sulphur Dioxide With N,o-Containing Organic Bases (Review)

Khoma

Еннан

2016

Odesa National University Herald. Chemistry

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Физико-химический институт защиты окружающей среды и человека МОН и НАН Украины, ул. Преображенская 3, Одесса, 65082, Украина МОЛЕКУЛЯРНЫЕ КОМПЛЕКСЫ ОКСиДА СЕРЫ (IV) С n,o-СОДЕРЖАЩиМи ОРГАНиЧЕСКиМи ОСНОВАНиЯМи (ОБЗОР) Систематизированы и обобщены литературные данные по синтезу, стехиометрии, строению и относительной устойчивости молекулярных комплексов оксида серы (IV) c N,O-содержащими органическими основаниями. Особое внимание уделено механизмам образования комплексов с переносом заряда, в которых реализуется S←N-и S←Oсвязывание, а также ван-дер-ваальсовых комплексов. Отмечены корреляции между электронными, спектральными параметрами, строением, относительной устойчивостью и другими характеристиками образуемых соединений. Ключевые слова: оксид серы (IV), N,O-содержащие органические основания, комплексы с переносом заряда, ван-дер-ваальсовы комплексы.

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2,2′-Bipyridinium(1+) bromide monohydrate

Cited by 8 publications

References 7 publications

6-(Tetrazol-5-yl)-2,2′-bipyridine: A Highly Selective Ligand for the Separation of Lanthanides(III) and Actinides(III)

6-(Tetrazol-5-yl)-2,2′-bipyridine: A Highly Selective Ligand for the Separation of Lanthanides(III) and Actinides(III)

Synthesis and Characterization of Alkyltris(2-pyridyl)phosphonium Salts

Molecular Complexes of Sulphur Dioxide With N,o-Containing Organic Bases (Review)

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