Rodolphe Clérac, F.Albert Cotton, Kim R Dunbar, Elizabeth A Hillard, Marina A Petrukhina, Bradley W Smucker
{"title":"Cu3(O2C16H23)6·1.2 C6H12的晶体结构和磁性行为。一个意想不到的结构和旋转挫折的例子","authors":"Rodolphe Clérac, F.Albert Cotton, Kim R Dunbar, Elizabeth A Hillard, Marina A Petrukhina, Bradley W Smucker","doi":"10.1016/S1387-1609(01)01233-6","DOIUrl":null,"url":null,"abstract":"<div><p>A copper(II) carboxylate has been obtained from the reaction of basic copper carbonate, CuCO<sub>3</sub>·Cu(OH)<sub>2</sub>, with 2,4,6-triisopropylbenzoic acid. It contains a trinuclear Cu<sub>3</sub><sup>6+</sup> core with three-fold symmetry, with each pair of copper atoms bridged by two carboxylate ligands. The Cu···Cu separations are 3.131(3) Å, precluding any direct bonding. Magnetic susceptibility data from 1.8 to 380 K at 1 000 G indicate a doublet ground state, (<em>g</em> ≈ 2.1) between 10–50 K (<em>μ</em><sub>eff</sub> = 1.80 <em>μ</em><sub>B</sub>). Above 50 K, the magnetic moment increases to 2.69 <em>μ</em><sub>B</sub> at 380 K, as expected for an equilateral triangular system of Cu<sup>II</sup> with antiferromagnetic interactions between spin carriers.</p></div>","PeriodicalId":100305,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIC - Chemistry","volume":"4 4","pages":"Pages 315-319"},"PeriodicalIF":0.0000,"publicationDate":"2001-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1387-1609(01)01233-6","citationCount":"5","resultStr":"{\"title\":\"Crystal structure and magnetic behavior of Cu3(O2C16H23)6·1.2 C6H12. An unexpected structure and an example of spin frustration\",\"authors\":\"Rodolphe Clérac, F.Albert Cotton, Kim R Dunbar, Elizabeth A Hillard, Marina A Petrukhina, Bradley W Smucker\",\"doi\":\"10.1016/S1387-1609(01)01233-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A copper(II) carboxylate has been obtained from the reaction of basic copper carbonate, CuCO<sub>3</sub>·Cu(OH)<sub>2</sub>, with 2,4,6-triisopropylbenzoic acid. It contains a trinuclear Cu<sub>3</sub><sup>6+</sup> core with three-fold symmetry, with each pair of copper atoms bridged by two carboxylate ligands. The Cu···Cu separations are 3.131(3) Å, precluding any direct bonding. Magnetic susceptibility data from 1.8 to 380 K at 1 000 G indicate a doublet ground state, (<em>g</em> ≈ 2.1) between 10–50 K (<em>μ</em><sub>eff</sub> = 1.80 <em>μ</em><sub>B</sub>). Above 50 K, the magnetic moment increases to 2.69 <em>μ</em><sub>B</sub> at 380 K, as expected for an equilateral triangular system of Cu<sup>II</sup> with antiferromagnetic interactions between spin carriers.</p></div>\",\"PeriodicalId\":100305,\"journal\":{\"name\":\"Comptes Rendus de l'Académie des Sciences - Series IIC - Chemistry\",\"volume\":\"4 4\",\"pages\":\"Pages 315-319\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2001-04-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/S1387-1609(01)01233-6\",\"citationCount\":\"5\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Comptes Rendus de l'Académie des Sciences - Series IIC - Chemistry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1387160901012336\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Comptes Rendus de l'Académie des Sciences - Series IIC - Chemistry","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1387160901012336","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Crystal structure and magnetic behavior of Cu3(O2C16H23)6·1.2 C6H12. An unexpected structure and an example of spin frustration
A copper(II) carboxylate has been obtained from the reaction of basic copper carbonate, CuCO3·Cu(OH)2, with 2,4,6-triisopropylbenzoic acid. It contains a trinuclear Cu36+ core with three-fold symmetry, with each pair of copper atoms bridged by two carboxylate ligands. The Cu···Cu separations are 3.131(3) Å, precluding any direct bonding. Magnetic susceptibility data from 1.8 to 380 K at 1 000 G indicate a doublet ground state, (g ≈ 2.1) between 10–50 K (μeff = 1.80 μB). Above 50 K, the magnetic moment increases to 2.69 μB at 380 K, as expected for an equilateral triangular system of CuII with antiferromagnetic interactions between spin carriers.
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