{"title":"由4,4'-氧二苯甲酸和4,4'-（1h -吡唑-3,5-二基）二吡啶构成的钴（II）配合物的三阶非线性光学性质研究。","authors":"Ning Zhao, Zhaoxun Lian","doi":"10.1107/S2053229625005133","DOIUrl":null,"url":null,"abstract":"<p><p>A novel mononuclear cobalt(II) complex, diaquabis[4-(4-carboxyphenoxy)<!?up><!?tlsb><!?down>benzoato-κO]bis{4-[3-(pyridin-4-yl)-1H-pyrazol-5-yl]pyridine-κN}cobalt(II), [Co(C<sub>14</sub>H<sub>9</sub>O<sub>5</sub>)<sub>2</sub>(C<sub>13</sub>H<sub>10</sub>N<sub>4</sub>)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>] or [Co(Hoba)<sub>2</sub>(bpp)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>] [H<sub>2</sub>oba 4,4'-oxydibenzoic acid and bpp is 4,4'-(1H-pyrazole-3,5-diyl)bipyridine], was successfully synthesized via a hydrothermal approach. In this compound, the central Co<sup>II</sup> atom exhibits a hexacoordinate octahedral geometry. The complex molecules are interconnected through hydrogen-bonding interactions, constructing a three-dimensional supramolecular framework. UV-Vis absorption spectroscopy revealed two distinct absorption bands at 274 and 367 nm. The third-order nonlinear optical properties were investigated using Z-scan measurements. The results demonstrated pronounced negative refraction behaviour with a nonlinear refractive index n<sub>2</sub> of -1.47 × 10<sup>-12</sup> m<sup>2</sup> W<sup>-1</sup> and a third-order susceptibility χ<sup>(3)</sup> of 5.62 × 10<sup>-7</sup> esu. These remarkable optical characteristics suggest that this cobalt(II) complex is a potential candidate for advanced photonic applications demanding high-performance third-order nonlinear optical materials.</p>","PeriodicalId":7115,"journal":{"name":"Acta Crystallographica Section C Structural Chemistry","volume":" ","pages":"414-419"},"PeriodicalIF":0.7000,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Investigation of the third-order nonlinear optical properties of a cobalt(II) complex constructed from 4,4'-oxydibenzoic acid and 4,4'-(1H-pyrazole-3,5-diyl)dipyridine.\",\"authors\":\"Ning Zhao, Zhaoxun Lian\",\"doi\":\"10.1107/S2053229625005133\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>A novel mononuclear cobalt(II) complex, diaquabis[4-(4-carboxyphenoxy)<!?up><!?tlsb><!?down>benzoato-κO]bis{4-[3-(pyridin-4-yl)-1H-pyrazol-5-yl]pyridine-κN}cobalt(II), [Co(C<sub>14</sub>H<sub>9</sub>O<sub>5</sub>)<sub>2</sub>(C<sub>13</sub>H<sub>10</sub>N<sub>4</sub>)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>] or [Co(Hoba)<sub>2</sub>(bpp)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>] [H<sub>2</sub>oba 4,4'-oxydibenzoic acid and bpp is 4,4'-(1H-pyrazole-3,5-diyl)bipyridine], was successfully synthesized via a hydrothermal approach. In this compound, the central Co<sup>II</sup> atom exhibits a hexacoordinate octahedral geometry. The complex molecules are interconnected through hydrogen-bonding interactions, constructing a three-dimensional supramolecular framework. UV-Vis absorption spectroscopy revealed two distinct absorption bands at 274 and 367 nm. The third-order nonlinear optical properties were investigated using Z-scan measurements. The results demonstrated pronounced negative refraction behaviour with a nonlinear refractive index n<sub>2</sub> of -1.47 × 10<sup>-12</sup> m<sup>2</sup> W<sup>-1</sup> and a third-order susceptibility χ<sup>(3)</sup> of 5.62 × 10<sup>-7</sup> esu. These remarkable optical characteristics suggest that this cobalt(II) complex is a potential candidate for advanced photonic applications demanding high-performance third-order nonlinear optical materials.</p>\",\"PeriodicalId\":7115,\"journal\":{\"name\":\"Acta Crystallographica Section C Structural Chemistry\",\"volume\":\" \",\"pages\":\"414-419\"},\"PeriodicalIF\":0.7000,\"publicationDate\":\"2025-07-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta Crystallographica Section C Structural Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1107/S2053229625005133\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2025/6/11 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Crystallographica Section C Structural Chemistry","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1107/S2053229625005133","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/6/11 0:00:00","PubModel":"Epub","JCR":"Q4","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Investigation of the third-order nonlinear optical properties of a cobalt(II) complex constructed from 4,4'-oxydibenzoic acid and 4,4'-(1H-pyrazole-3,5-diyl)dipyridine.
A novel mononuclear cobalt(II) complex, diaquabis[4-(4-carboxyphenoxy)benzoato-κO]bis{4-[3-(pyridin-4-yl)-1H-pyrazol-5-yl]pyridine-κN}cobalt(II), [Co(C14H9O5)2(C13H10N4)2(H2O)2] or [Co(Hoba)2(bpp)2(H2O)2] [H2oba 4,4'-oxydibenzoic acid and bpp is 4,4'-(1H-pyrazole-3,5-diyl)bipyridine], was successfully synthesized via a hydrothermal approach. In this compound, the central CoII atom exhibits a hexacoordinate octahedral geometry. The complex molecules are interconnected through hydrogen-bonding interactions, constructing a three-dimensional supramolecular framework. UV-Vis absorption spectroscopy revealed two distinct absorption bands at 274 and 367 nm. The third-order nonlinear optical properties were investigated using Z-scan measurements. The results demonstrated pronounced negative refraction behaviour with a nonlinear refractive index n2 of -1.47 × 10-12 m2 W-1 and a third-order susceptibility χ(3) of 5.62 × 10-7 esu. These remarkable optical characteristics suggest that this cobalt(II) complex is a potential candidate for advanced photonic applications demanding high-performance third-order nonlinear optical materials.
期刊介绍：
Acta Crystallographica Section C: Structural Chemistry is continuing its transition to a journal that publishes exciting science with structural content, in particular, important results relating to the chemical sciences. Section C is the journal of choice for the rapid publication of articles that highlight interesting research facilitated by the determination, calculation or analysis of structures of any type, other than macromolecular structures. Articles that emphasize the science and the outcomes that were enabled by the study are particularly welcomed. Authors are encouraged to include mainstream science in their papers, thereby producing manuscripts that are substantial scientific well-rounded contributions that appeal to a broad community of readers and increase the profile of the authors.
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