<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2221-2442</journal-id>
<journal-title><![CDATA[Revista CENIC Ciencias Químicas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. CENIC Cienc. Quím.]]></abbrev-journal-title>
<issn>2221-2442</issn>
<publisher>
<publisher-name><![CDATA[Centro Nacional de Investigaciones Científicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2221-24422022000100072</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Sensores químicamente sencillos tipo sulfonamida para iones Cu2+: estudio de estabilidad en disolución]]></article-title>
<article-title xml:lang="en"><![CDATA[Chemically simple sulfonamide-type sensors for Cu2+ ions: solution stability study]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villar Guindo]]></surname>
<given-names><![CDATA[Anabel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ferrer Serrano]]></surname>
<given-names><![CDATA[Armando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro de Investigaciones de Energía Solar (CIES)  ]]></institution>
<addr-line><![CDATA[ Santiago de Cuba]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Oriente  ]]></institution>
<addr-line><![CDATA[ Santiago de Cuba]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<volume>53</volume>
<numero>1</numero>
<fpage>72</fpage>
<lpage>86</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2221-24422022000100072&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2221-24422022000100072&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2221-24422022000100072&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN En esta investigación fueron diseñadas sulfonamidas naftalénicas tipo podando para el reconocimiento iónico de Cu2+. Se evaluaron algunas métricas de la química sostenible para evaluar el impacto ambiental de las reacciones empleadas. Se realizó un estudio de formación de complejos en disolución dando constantes de complejación adecuadas para el reconocimiento de Cu2+ para los ligandos LA2 y LA6. Todos los complejos precipitan instantáneamente al reaccionar directamente con iones Cu2+ formando complejos de color azul. Para el ligando LA2 ocurre un cambio de color hacia el verde olivo al cabo de los 8 minutos debido a una reorganización molecular. El uso del ligando LA2 puede constituir parte de un kit de reconocimiento iónico que detecta concentraciones del orden de 10-3 mol·dm-3.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Some podand sulfonamides were designed to Cu2+ ion recognition. Some green chemistry metrics were evaluated in order to know the environmental impact of the reactions. Cu2+ complexes studio with the ligands were done, given adequate complexation constants for Cu2+ recognition by ligands LA2 y LA6. All complexes precipitated instantaneously when directly react with copper ions resulting in blue complexes. For LA2 a color change to olive green in 8 minutes was observed maybe due to a molecular reorganization. LA2 can be used as a part of an ion recognition kit that detect concentration in the order of 10-3 mol·dm-3.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[sulfonamidas]]></kwd>
<kwd lng="es"><![CDATA[reconocimiento iónico]]></kwd>
<kwd lng="es"><![CDATA[podandos]]></kwd>
<kwd lng="es"><![CDATA[complejación]]></kwd>
<kwd lng="en"><![CDATA[Sulphonamides]]></kwd>
<kwd lng="en"><![CDATA[ion recognition]]></kwd>
<kwd lng="en"><![CDATA[podands]]></kwd>
<kwd lng="en"><![CDATA[complex formation]]></kwd>
</kwd-group>
</article-meta>
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