{"title":"间位二氟苯的微波光谱研究","authors":"A Rachmant","doi":"10.1016/0371-1951(66)80154-6","DOIUrl":null,"url":null,"abstract":"<div><p>The microwave spectrum of <em>m</em>-C<sub>6</sub><sup>12</sup>H<sub>4</sub>F<sub>2</sub> has been measured from 18·0 to 25·0 GHz with wavemeter and frequency standard techniques, using a Stark modulated gas-absorption, microwave spectrometer. The analysis of the spectrum is based on the rigid asymmetric top theory; the rotational constants and the principal moments of inertia were determined and a preliminary structure of the molecule is given. The results are in agreement with the assumed planarity of the molecule and with normal values of bond distances. The rotational constants are: <em>A</em> = 3739·97 ± 0·3 MHz., <em>B</em> = 1734·95 ± 0·1 MHz., <em>C</em> = 1185·48 ± 0·1 MHz. The inertia defect obtained is <em>I<sub>c</sub></em> <em>I<sub>a</sub></em> <em>I<sub>b</sub></em> = −0·11 amuA<sup>2</sup>.</p></div>","PeriodicalId":101180,"journal":{"name":"Spectrochimica Acta","volume":"22 9","pages":"Pages 1551-1554"},"PeriodicalIF":0.0000,"publicationDate":"1966-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0371-1951(66)80154-6","citationCount":"5","resultStr":"{\"title\":\"Investigations on the microwave spectrum of meta-di-fluoro-benzene\",\"authors\":\"A Rachmant\",\"doi\":\"10.1016/0371-1951(66)80154-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The microwave spectrum of <em>m</em>-C<sub>6</sub><sup>12</sup>H<sub>4</sub>F<sub>2</sub> has been measured from 18·0 to 25·0 GHz with wavemeter and frequency standard techniques, using a Stark modulated gas-absorption, microwave spectrometer. The analysis of the spectrum is based on the rigid asymmetric top theory; the rotational constants and the principal moments of inertia were determined and a preliminary structure of the molecule is given. The results are in agreement with the assumed planarity of the molecule and with normal values of bond distances. The rotational constants are: <em>A</em> = 3739·97 ± 0·3 MHz., <em>B</em> = 1734·95 ± 0·1 MHz., <em>C</em> = 1185·48 ± 0·1 MHz. The inertia defect obtained is <em>I<sub>c</sub></em> <em>I<sub>a</sub></em> <em>I<sub>b</sub></em> = −0·11 amuA<sup>2</sup>.</p></div>\",\"PeriodicalId\":101180,\"journal\":{\"name\":\"Spectrochimica Acta\",\"volume\":\"22 9\",\"pages\":\"Pages 1551-1554\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1966-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0371-1951(66)80154-6\",\"citationCount\":\"5\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Spectrochimica Acta\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0371195166801546\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Spectrochimica Acta","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0371195166801546","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
摘要
利用斯塔克调制气体吸收微波光谱仪，采用波长计和频率标准技术测量了m-C612H4F2在18.0 ~ 25.0 GHz范围内的微波光谱。光谱分析基于刚性不对称顶理论;测定了分子的转动常数和主转动惯量，给出了分子的初步结构。结果与假设的分子平面度和键距正常值一致。旋转常数为:A = 3739.97±0.3 MHz。， B = 1734·95±0.1 MHz。， C = 1185·48±0.1 MHz。得到的惯性缺陷为IcIaIb =−0·11 amuA2。
Investigations on the microwave spectrum of meta-di-fluoro-benzene
The microwave spectrum of m-C612H4F2 has been measured from 18·0 to 25·0 GHz with wavemeter and frequency standard techniques, using a Stark modulated gas-absorption, microwave spectrometer. The analysis of the spectrum is based on the rigid asymmetric top theory; the rotational constants and the principal moments of inertia were determined and a preliminary structure of the molecule is given. The results are in agreement with the assumed planarity of the molecule and with normal values of bond distances. The rotational constants are: A = 3739·97 ± 0·3 MHz., B = 1734·95 ± 0·1 MHz., C = 1185·48 ± 0·1 MHz. The inertia defect obtained is Ic Ia Ib = −0·11 amuA2.
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