From Isolated Anions to Polymer Structures through Linking with I2: Synthesis, Structure, and Properties of Two Complex Bismuth(III) Iodine Iodides
We report the synthesis, crystal structures, and optical properties of two new compounds, K18Bi8I42(I2)0.5·14H2O (1) and (NH4)7Bi3I16(I2)0.5·4.5H2O (2), as well as the electronic structure of the latter. They crystallize in tetragonal space group P4/mmm with the unit cell parameters a = 12.974(1) an...
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Veröffentlicht in: | Inorganic chemistry 2018-04, Vol.57 (7), p.4077-4087 |
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creator | Shestimerova, Tatiana A Yelavik, Natallia A Mironov, Andrei V Kuznetsov, Alexey N Bykov, Mikhail A Grigorieva, Anastasia V Utochnikova, Valentina V Lepnev, Leonid S Shevelkov, Andrei V |
description | We report the synthesis, crystal structures, and optical properties of two new compounds, K18Bi8I42(I2)0.5·14H2O (1) and (NH4)7Bi3I16(I2)0.5·4.5H2O (2), as well as the electronic structure of the latter. They crystallize in tetragonal space group P4/mmm with the unit cell parameters a = 12.974(1) and c = 20.821(3) Å for 1 and a = 13.061(3) and c = 15.162(7) Å for 2. Though 1 and 2 are not isomorphous, their crystal structures display the same structural organization; namely, the BiI6 octahedra are linked by I2 units to form disordered layers in 1 and perfectly ordered chains in 2. The I–I bond distances in the thus formed I–I–I–I linear links are not uniform; the central bond is only slightly longer than in a standalone I2 molecule, whereas the peripheral bonds are significantly shorter than longer bonds typical for various polyiodides, which is confirmed by Raman spectroscopy. The analysis of the electronic structure shows that the atoms forming the I–I–I–I subunits transfer electron density from their occupied 5p orbitals onto their vacant states as well as onto 6s orbitals of bismuth atoms that center the BiI6 octahedra. This leads to low direct band gaps that were found to be 1.57 and 1.27 eV for 1 and 2, respectively, by optical absorption spectroscopy. Luminescent radiative relaxation was observed in the near-IR region with emission maxima of 1.39 and 1.24 eV for 1 and 2, respectively, in good agreement with the band structure, despite the strong quenching propensity of I2 moieties. |
doi_str_mv | 10.1021/acs.inorgchem.8b00265 |
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They crystallize in tetragonal space group P4/mmm with the unit cell parameters a = 12.974(1) and c = 20.821(3) Å for 1 and a = 13.061(3) and c = 15.162(7) Å for 2. Though 1 and 2 are not isomorphous, their crystal structures display the same structural organization; namely, the BiI6 octahedra are linked by I2 units to form disordered layers in 1 and perfectly ordered chains in 2. The I–I bond distances in the thus formed I–I–I–I linear links are not uniform; the central bond is only slightly longer than in a standalone I2 molecule, whereas the peripheral bonds are significantly shorter than longer bonds typical for various polyiodides, which is confirmed by Raman spectroscopy. The analysis of the electronic structure shows that the atoms forming the I–I–I–I subunits transfer electron density from their occupied 5p orbitals onto their vacant states as well as onto 6s orbitals of bismuth atoms that center the BiI6 octahedra. This leads to low direct band gaps that were found to be 1.57 and 1.27 eV for 1 and 2, respectively, by optical absorption spectroscopy. Luminescent radiative relaxation was observed in the near-IR region with emission maxima of 1.39 and 1.24 eV for 1 and 2, respectively, in good agreement with the band structure, despite the strong quenching propensity of I2 moieties.</description><identifier>ISSN: 0020-1669</identifier><identifier>EISSN: 1520-510X</identifier><identifier>DOI: 10.1021/acs.inorgchem.8b00265</identifier><language>eng</language><publisher>American Chemical Society</publisher><ispartof>Inorganic chemistry, 2018-04, Vol.57 (7), p.4077-4087</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><orcidid>0000-0002-8316-3280</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/acs.inorgchem.8b00265$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/acs.inorgchem.8b00265$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>314,780,784,27076,27924,27925,56738,56788</link.rule.ids></links><search><creatorcontrib>Shestimerova, Tatiana A</creatorcontrib><creatorcontrib>Yelavik, Natallia A</creatorcontrib><creatorcontrib>Mironov, Andrei V</creatorcontrib><creatorcontrib>Kuznetsov, Alexey N</creatorcontrib><creatorcontrib>Bykov, Mikhail A</creatorcontrib><creatorcontrib>Grigorieva, Anastasia V</creatorcontrib><creatorcontrib>Utochnikova, Valentina V</creatorcontrib><creatorcontrib>Lepnev, Leonid S</creatorcontrib><creatorcontrib>Shevelkov, Andrei V</creatorcontrib><title>From Isolated Anions to Polymer Structures through Linking with I2: Synthesis, Structure, and Properties of Two Complex Bismuth(III) Iodine Iodides</title><title>Inorganic chemistry</title><addtitle>Inorg. Chem</addtitle><description>We report the synthesis, crystal structures, and optical properties of two new compounds, K18Bi8I42(I2)0.5·14H2O (1) and (NH4)7Bi3I16(I2)0.5·4.5H2O (2), as well as the electronic structure of the latter. They crystallize in tetragonal space group P4/mmm with the unit cell parameters a = 12.974(1) and c = 20.821(3) Å for 1 and a = 13.061(3) and c = 15.162(7) Å for 2. Though 1 and 2 are not isomorphous, their crystal structures display the same structural organization; namely, the BiI6 octahedra are linked by I2 units to form disordered layers in 1 and perfectly ordered chains in 2. The I–I bond distances in the thus formed I–I–I–I linear links are not uniform; the central bond is only slightly longer than in a standalone I2 molecule, whereas the peripheral bonds are significantly shorter than longer bonds typical for various polyiodides, which is confirmed by Raman spectroscopy. The analysis of the electronic structure shows that the atoms forming the I–I–I–I subunits transfer electron density from their occupied 5p orbitals onto their vacant states as well as onto 6s orbitals of bismuth atoms that center the BiI6 octahedra. This leads to low direct band gaps that were found to be 1.57 and 1.27 eV for 1 and 2, respectively, by optical absorption spectroscopy. Luminescent radiative relaxation was observed in the near-IR region with emission maxima of 1.39 and 1.24 eV for 1 and 2, respectively, in good agreement with the band structure, despite the strong quenching propensity of I2 moieties.</description><issn>0020-1669</issn><issn>1520-510X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNpFkV9LwzAUxYMoOP98BCGPCnbepGnX-abDaWGgsAm-lay5XaNtMpOUuc_hF7Y6Ue7DgcPvXi7nEHLGYMiAsytZ-qE21q3KGtthtgTgabJHBizhECUMXvbJoPcgYmk6PiRH3r8CwDgW6YB8Tp1tae5tIwMqemO0NZ4GS59ss23R0XlwXRk6h71bO9utajrT5k2bFd3oUNOcX9P51oQavfaX__gllUbRJ2fX6ILut21FFxtLJ7ZdN_hBb7Vvu1Cf53l-QXOrtMEfUehPyEElG4-nv3pMnqd3i8lDNHu8zyc3s0gykYQo4wgJFxhXJYxEshwnMlMqZijKJI5TrkpVyhSV6AcFjEbAuagwlhWInsviY3K-u7t29r1DH4pW-xKbRhq0nS84sAxYmnHeo2yH9lkXr7Zzpn-sYFB8F1B8m38FFL8FxF8ZOH8m</recordid><startdate>20180402</startdate><enddate>20180402</enddate><creator>Shestimerova, Tatiana A</creator><creator>Yelavik, Natallia A</creator><creator>Mironov, Andrei V</creator><creator>Kuznetsov, Alexey N</creator><creator>Bykov, Mikhail A</creator><creator>Grigorieva, Anastasia V</creator><creator>Utochnikova, Valentina V</creator><creator>Lepnev, Leonid S</creator><creator>Shevelkov, Andrei V</creator><general>American Chemical Society</general><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-8316-3280</orcidid></search><sort><creationdate>20180402</creationdate><title>From Isolated Anions to Polymer Structures through Linking with I2: Synthesis, Structure, and Properties of Two Complex Bismuth(III) Iodine Iodides</title><author>Shestimerova, Tatiana A ; Yelavik, Natallia A ; Mironov, Andrei V ; Kuznetsov, Alexey N ; Bykov, Mikhail A ; Grigorieva, Anastasia V ; Utochnikova, Valentina V ; Lepnev, Leonid S ; Shevelkov, Andrei V</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a145t-82e0524e3fc0745b95a8dd31e4c53362dcdca6ed4d4de40770224fe3af04dd383</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Shestimerova, Tatiana A</creatorcontrib><creatorcontrib>Yelavik, Natallia A</creatorcontrib><creatorcontrib>Mironov, Andrei V</creatorcontrib><creatorcontrib>Kuznetsov, Alexey N</creatorcontrib><creatorcontrib>Bykov, Mikhail A</creatorcontrib><creatorcontrib>Grigorieva, Anastasia V</creatorcontrib><creatorcontrib>Utochnikova, Valentina V</creatorcontrib><creatorcontrib>Lepnev, Leonid S</creatorcontrib><creatorcontrib>Shevelkov, Andrei V</creatorcontrib><collection>MEDLINE - Academic</collection><jtitle>Inorganic chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Shestimerova, Tatiana A</au><au>Yelavik, Natallia A</au><au>Mironov, Andrei V</au><au>Kuznetsov, Alexey N</au><au>Bykov, Mikhail A</au><au>Grigorieva, Anastasia V</au><au>Utochnikova, Valentina V</au><au>Lepnev, Leonid S</au><au>Shevelkov, Andrei V</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>From Isolated Anions to Polymer Structures through Linking with I2: Synthesis, Structure, and Properties of Two Complex Bismuth(III) Iodine Iodides</atitle><jtitle>Inorganic chemistry</jtitle><addtitle>Inorg. Chem</addtitle><date>2018-04-02</date><risdate>2018</risdate><volume>57</volume><issue>7</issue><spage>4077</spage><epage>4087</epage><pages>4077-4087</pages><issn>0020-1669</issn><eissn>1520-510X</eissn><abstract>We report the synthesis, crystal structures, and optical properties of two new compounds, K18Bi8I42(I2)0.5·14H2O (1) and (NH4)7Bi3I16(I2)0.5·4.5H2O (2), as well as the electronic structure of the latter. They crystallize in tetragonal space group P4/mmm with the unit cell parameters a = 12.974(1) and c = 20.821(3) Å for 1 and a = 13.061(3) and c = 15.162(7) Å for 2. Though 1 and 2 are not isomorphous, their crystal structures display the same structural organization; namely, the BiI6 octahedra are linked by I2 units to form disordered layers in 1 and perfectly ordered chains in 2. The I–I bond distances in the thus formed I–I–I–I linear links are not uniform; the central bond is only slightly longer than in a standalone I2 molecule, whereas the peripheral bonds are significantly shorter than longer bonds typical for various polyiodides, which is confirmed by Raman spectroscopy. The analysis of the electronic structure shows that the atoms forming the I–I–I–I subunits transfer electron density from their occupied 5p orbitals onto their vacant states as well as onto 6s orbitals of bismuth atoms that center the BiI6 octahedra. This leads to low direct band gaps that were found to be 1.57 and 1.27 eV for 1 and 2, respectively, by optical absorption spectroscopy. Luminescent radiative relaxation was observed in the near-IR region with emission maxima of 1.39 and 1.24 eV for 1 and 2, respectively, in good agreement with the band structure, despite the strong quenching propensity of I2 moieties.</abstract><pub>American Chemical Society</pub><doi>10.1021/acs.inorgchem.8b00265</doi><tpages>11</tpages><orcidid>https://orcid.org/0000-0002-8316-3280</orcidid></addata></record> |
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title | From Isolated Anions to Polymer Structures through Linking with I2: Synthesis, Structure, and Properties of Two Complex Bismuth(III) Iodine Iodides |
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