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<creators>
<creator>
<creatorName>Michitiuc, O.</creatorName>
<affiliation>Institutul de Fizică Aplicată, Moldova, Republica</affiliation>
</creator>
<creator>
<creatorName>Kravţov, V.H.</creatorName>
<affiliation>Institutul de Fizică Aplicată, Moldova, Republica</affiliation>
</creator>
<creator>
<creatorName>Baca, S.G.</creatorName>
<affiliation>Institutul de Fizică Aplicată, Moldova, Republica</affiliation>
</creator>
</creators>
<titles>
<title xml:lang='en'>Dinuclear Cu(II) isobutyrates with 4-pyridinecarboxaldehyde and dimethyl sulfoxide</title>
</titles>
<publisher>Instrumentul Bibliometric National</publisher>
<publicationYear>2018</publicationYear>
<relatedIdentifier relatedIdentifierType='ISBN' relationType='IsPartOf'></relatedIdentifier>
<subjects>
<subject schemeURI='http://udcdata.info/' subjectScheme='UDC'>544+535.37+546.56</subject>
</subjects>
<dates>
<date dateType='Issued'>2018</date>
</dates>
<resourceType resourceTypeGeneral='Text'>Conference Paper</resourceType>
<descriptions>
<description xml:lang='en' descriptionType='Abstract'><p>A new dinuclear copper(II) coordination compound based on isobutyric acid and 4-pyridinecarboxaldehyde (pyca) of the formula [Cu2(is)4(pyca)2] (<strong>1</strong>) has been synthesized and characterized by a range of physical methods including IR spectroscopy and thermogravimetric analysis. A single-crystal X-ray diffraction analysis shows that <strong>1 </strong>crystalizes in the tetragonal space group <em>I</em>4122 with <em>a </em>= <em>b </em>=15.5155(7), <em>c </em>= 13.7051(9) &Aring;, <em>V </em>= 3299.2(3) &Aring;3. In the structure <strong>1 </strong>dinuclear complex reside on special position and has <em>D</em>2 molecular symmetry. The complex reveals two square pyramidal Cu(II) centers with each Cu(II) atom bound to four O atoms from four isobutyrates and one N atom of pyca ligand forming a NO4 donor set (Figure 1). The Cu-O bond distances are in the range of 1.951(6) and 1.960(6) &Aring;, Cu-N bond distance equals to 2.181(7) &Aring; and Cu&hellip;Cu distance is 2.615(2) &Aring;. &nbsp;Changing the solvent from acetone to dimethyl sulfoxide in the similar reaction led to the precipitation of a dinuclear [Cu2(is)4(dmso)2] (<strong>2</strong>) complex, where an apical position to each copper atom occupies by dmso molecule instead of pyca in <strong>1 </strong>(Figure 1b). Complex <strong>2 </strong>crystalizes in the trigonal space group <em>R-</em>3 with <em>a </em>= <em>b </em>= 19.4596(8), <em>c </em>= 22.1622(8) &Aring;, <em>V </em>= 7267.94(8) &Aring;3. In crystal the complex resides on an inversion center thus having <em>C</em>i symmetry. The square pyramidal Cu(II) atoms are coordinated by four O atoms from four isobutyrates and one O atom of dmso ligand forming an O5 donor set (Cu-Ocarb, 1.94(2) - 1.98(2); Cu-Odmso, 2.133(4) &Aring;). Compare to <strong>1</strong>, the Cu&hellip;Cu distance of 2.635(8) &Aring; is slightly longer in <strong>2</strong>. The peculiarities of the reaction conditions as well as the possibilities to arrange such dinuclear copper(II) clusters into extended networks will be discussed.</p><p>&nbsp;</p></description>
</descriptions>
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<format>application/pdf</format>
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