Solvent effects of N‐nitroso, N‐(2‐chloroethyl), N′,N′‐dibenzylsulfamid and its copper(II) and cobalt(II) complexes: fluorescence studies
Identifieur interne : 000385 ( Istex/Corpus ); précédent : 000384; suivant : 000386Solvent effects of N‐nitroso, N‐(2‐chloroethyl), N′,N′‐dibenzylsulfamid and its copper(II) and cobalt(II) complexes: fluorescence studies
Auteurs : Nadjia Bensouilah ; Hassina Fisli ; Nabila Dhaoui ; Nourredine Benali-Cherif ; Mohamed AbdaouiSource :
- Luminescence [ 1522-7235 ] ; 2013-01.
Abstract
The structure of N‐nitroso, N‐(2‐chloroethyl), N′,N′‐dibenzylsulfamid (CENS) was established by X‐ray crystallography. The atomic coordinates, factors of isotropic thermal agitation, bond lengths and valence angles were determined. The solvent effects on the electronic absorption and fluorescence spectra of CENS were investigated at room temperature. The effects of solvent polarity and of hydrogen bonding were interpreted by means of linear solvation energy relationships (LSERs). Multiple linear regression analysis indicated that the hydrogen donation properties of the solvent play an important role in determining the position of the absorption maximum, while the classical polarity of the medium is the only dominating parameter in determining the emission maximum and the Stokes' shift. Complexation of the investigated compound by two different transition metal ions was studied. Fluorescence measurements show that fluorescence quenching by cobalt(II) is more important than that by copper(II). This phenomenon can be attributed to good stereo‐structural matching between the electronic configuration of the Co2+ ion and the active site distribution of CENS in aqueous solution. Copyright © 2012 John Wiley & Sons, Ltd.
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DOI: 10.1002/bio.1393
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<keyword xml:id="bio1393-kwd-0006">quenching</keyword>
<keyword xml:id="bio1393-kwd-0007">transition metal</keyword>
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<abstractGroup><abstract type="main"><title type="main">ABSTRACT</title>
<p>The structure of <i>N</i>
‐nitroso, <i>N</i>
‐(2‐chloroethyl), <i>N</i>
′,<i>N</i>
′‐dibenzylsulfamid (CENS) was established by X‐ray crystallography. The atomic coordinates, factors of isotropic thermal agitation, bond lengths and valence angles were determined. The solvent effects on the electronic absorption and fluorescence spectra of CENS were investigated at room temperature. The effects of solvent polarity and of hydrogen bonding were interpreted by means of linear solvation energy relationships (LSERs). Multiple linear regression analysis indicated that the hydrogen donation properties of the solvent play an important role in determining the position of the absorption maximum, while the classical polarity of the medium is the only dominating parameter in determining the emission maximum and the Stokes' shift. Complexation of the investigated compound by two different transition metal ions was studied. Fluorescence measurements show that fluorescence quenching by cobalt(II) is more important than that by copper(II). This phenomenon can be attributed to good stereo‐structural matching between the electronic configuration of the Co<sup>2+</sup>
ion and the active site distribution of CENS in aqueous solution. Copyright © 2012 John Wiley & Sons, Ltd.</p>
</abstract>
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<mods version="3.6"><titleInfo lang="en"><title>Solvent effects of N‐nitroso, N‐(2‐chloroethyl), N′,N′‐dibenzylsulfamid and its copper(II) and cobalt(II) complexes: fluorescence studies</title>
</titleInfo>
<titleInfo type="abbreviated" lang="en"><title>Solvent effects of N‐nitroso, N‐(2‐chloroethyl), N′,N′‐dibenzylsulfamid</title>
</titleInfo>
<titleInfo type="alternative" contentType="CDATA" lang="en"><title>Solvent effects of N‐nitroso, N‐(2‐chloroethyl), N′,N′‐dibenzylsulfamid and its copper(II) and cobalt(II) complexes: fluorescence studies</title>
</titleInfo>
<name type="personal"><namePart type="given">Nadjia</namePart>
<namePart type="family">Bensouilah</namePart>
<affiliation>Laboratory of Applied Chemistry, University of May 8th 1945, BP 401, Guelma, Algeria</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">Hassina</namePart>
<namePart type="family">Fisli</namePart>
<affiliation>Laboratory of Applied Chemistry, University of May 8th 1945, BP 401, Guelma, Algeria</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">Nabila</namePart>
<namePart type="family">Dhaoui</namePart>
<affiliation>Laboratory of Applied Chemistry, University of May 8th 1945, BP 401, Guelma, Algeria</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">Nourredine</namePart>
<namePart type="family">Benali‐Cherif</namePart>
<affiliation>Laboratory of Structures, Proprieties and Inter‐atomic Interactions, University Centre of Khenchla, Algeria</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">Mohamed</namePart>
<namePart type="family">Abdaoui</namePart>
<affiliation>Laboratory of Applied Chemistry, University of May 8th 1945, BP 401, Guelma, Algeria</affiliation>
<affiliation>E-mail: abdaoui.mohamed@univ‐guelma.dz</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
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<originInfo><publisher>Blackwell Publishing Ltd</publisher>
<dateIssued encoding="w3cdtf">2013-01</dateIssued>
<dateCreated encoding="w3cdtf">2011-12-06</dateCreated>
<dateCaptured encoding="w3cdtf">2010-12-04</dateCaptured>
<dateValid encoding="w3cdtf">2011-11-14</dateValid>
<copyrightDate encoding="w3cdtf">2013</copyrightDate>
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<languageTerm type="code" authority="iso639-2b">eng</languageTerm>
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<abstract>The structure of N‐nitroso, N‐(2‐chloroethyl), N′,N′‐dibenzylsulfamid (CENS) was established by X‐ray crystallography. The atomic coordinates, factors of isotropic thermal agitation, bond lengths and valence angles were determined. The solvent effects on the electronic absorption and fluorescence spectra of CENS were investigated at room temperature. The effects of solvent polarity and of hydrogen bonding were interpreted by means of linear solvation energy relationships (LSERs). Multiple linear regression analysis indicated that the hydrogen donation properties of the solvent play an important role in determining the position of the absorption maximum, while the classical polarity of the medium is the only dominating parameter in determining the emission maximum and the Stokes' shift. Complexation of the investigated compound by two different transition metal ions was studied. Fluorescence measurements show that fluorescence quenching by cobalt(II) is more important than that by copper(II). This phenomenon can be attributed to good stereo‐structural matching between the electronic configuration of the Co2+ ion and the active site distribution of CENS in aqueous solution. Copyright © 2012 John Wiley & Sons, Ltd.</abstract>
<subject><genre>keywords</genre>
<topic>CENS</topic>
<topic>X‐ray analysis</topic>
<topic>copper(II) and cobalt(II) complexes</topic>
<topic>fluorescence</topic>
<topic>solvent effects</topic>
<topic>quenching</topic>
<topic>transition metal</topic>
</subject>
<relatedItem type="host"><titleInfo><title>Luminescence</title>
</titleInfo>
<titleInfo type="abbreviated"><title>Luminescence</title>
</titleInfo>
<genre type="journal">journal</genre>
<subject><genre>article-category</genre>
<topic>Research article</topic>
</subject>
<identifier type="ISSN">1522-7235</identifier>
<identifier type="eISSN">1522-7243</identifier>
<identifier type="DOI">10.1002/(ISSN)1522-7243</identifier>
<identifier type="PublisherID">BIO</identifier>
<part><date>2013</date>
<detail type="volume"><caption>vol.</caption>
<number>28</number>
</detail>
<detail type="issue"><caption>no.</caption>
<number>1</number>
</detail>
<extent unit="pages"><start>30</start>
<end>37</end>
<total>8</total>
</extent>
</part>
</relatedItem>
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<identifier type="DOI">10.1002/bio.1393</identifier>
<identifier type="ArticleID">BIO1393</identifier>
<accessCondition type="use and reproduction" contentType="copyright">Copyright © 2013 John Wiley & Sons, Ltd.Copyright © 2012 John Wiley & Sons, Ltd.</accessCondition>
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