{"title":"Synthesis and structure of 1,3-bis(hydroxysilyl)-2,4-dimethyl-2,4-diphenylcyclodisilazane","authors":"Yan Zheng , Yongxia Tan , Lina Dai , Zhijie Zhang","doi":"10.1016/j.jorganchem.2011.07.002","DOIUrl":null,"url":null,"abstract":"<div><p>Trans-silylation reactions of (Me<sub>3</sub>Si)<sub>2</sub>NH with PhRSiCl<sub>2</sub> (R<!--> <!-->=<!--> <!-->Me, Ph) gave HN(SiMePhCl)<sub>2</sub> (<strong>1</strong>) or ClMePhSiNHSiPh<sub>2</sub>Cl (<strong>2</strong>). The treatment of 1,3-dichlorodisilazane (<strong>1</strong> or <strong>2</strong>) with an equimolar amount of <em>n</em>-BuLi led to the formation of 1,3-bis(chloro-silyl)-2,4-dimethyl-2,4-diphenylcyclodisilazane (ClSiMePh)<sub>2</sub>(NSiMePh)<sub>2</sub> (<strong>3</strong>) or (ClSiPh<sub>2</sub>)<sub>2</sub>(NSiMePh)<sub>2</sub> (<strong>4</strong><span>), which was allowed to hydrolyze to form 1,3-bis(hydroxysilyl)-2,4-dimethyl-2,4-diphenylcyclodisilazane (HOSiMePh)</span><sub>2</sub>(NSiMePh)<sub>2</sub> (<strong>5</strong>) or (HOSiPh<sub>2</sub>)<sub>2</sub>(NSiMePh)<sub>2</sub> (<strong>6</strong><span>), respectively. The cyclodisilazane monomers<span> were characterized by elemental analysis, NMR and IR spectroscopy. Compound </span></span><strong>3</strong> was obtained as a 4:6 <em>cis</em>/<em>trans</em> mixture while <strong>4</strong> adopted <em>trans</em>-structure considering the hindrance of pendent groups. In addition, the molecular structures of <em>trans</em>-<strong>5</strong> and <em>trans</em>-<strong>6</strong> were determined by X-ray crystallographic analysis and discussed in detail.</p></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"696 20","pages":"Pages 3245-3250"},"PeriodicalIF":2.1000,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.jorganchem.2011.07.002","citationCount":"6","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Organometallic Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022328X11004451","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 6
Abstract
Trans-silylation reactions of (Me3Si)2NH with PhRSiCl2 (R = Me, Ph) gave HN(SiMePhCl)2 (1) or ClMePhSiNHSiPh2Cl (2). The treatment of 1,3-dichlorodisilazane (1 or 2) with an equimolar amount of n-BuLi led to the formation of 1,3-bis(chloro-silyl)-2,4-dimethyl-2,4-diphenylcyclodisilazane (ClSiMePh)2(NSiMePh)2 (3) or (ClSiPh2)2(NSiMePh)2 (4), which was allowed to hydrolyze to form 1,3-bis(hydroxysilyl)-2,4-dimethyl-2,4-diphenylcyclodisilazane (HOSiMePh)2(NSiMePh)2 (5) or (HOSiPh2)2(NSiMePh)2 (6), respectively. The cyclodisilazane monomers were characterized by elemental analysis, NMR and IR spectroscopy. Compound 3 was obtained as a 4:6 cis/trans mixture while 4 adopted trans-structure considering the hindrance of pendent groups. In addition, the molecular structures of trans-5 and trans-6 were determined by X-ray crystallographic analysis and discussed in detail.
期刊介绍：
The Journal of Organometallic Chemistry targets original papers dealing with theoretical aspects, structural chemistry, synthesis, physical and chemical properties (including reaction mechanisms), and practical applications of organometallic compounds.
Organometallic compounds are defined as compounds that contain metal - carbon bonds. The term metal includes all alkali and alkaline earth metals, all transition metals and the lanthanides and actinides in the Periodic Table. Metalloids including the elements in Group 13 and the heavier members of the Groups 14 - 16 are also included. The term chemistry includes syntheses, characterizations and reaction chemistry of all such compounds. Research reports based on use of organometallic complexes in bioorganometallic chemistry, medicine, material sciences, homogeneous catalysis and energy conversion are also welcome.
The scope of the journal has been enlarged to encompass important research on organometallic complexes in bioorganometallic chemistry and material sciences, and of heavier main group elements in organometallic chemistry. The journal also publishes review articles, short communications and notes.
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