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二茂钛含氟有机酸衍生物的质谱研究
Mass Spectra of Fluoro-containing Organic Acid Derivatives of Bis-cyclopentadienyl Titanium
【摘要】 本文研究了二茂钛含氟长链有机酸衍生物(1~3)和具有环状结构的新型二茂钛全氟有机酸(4~7)的电子轰击质谱(EIMS)和负离子化学电离质谱(NICIMS)。在EI谱中出现弱的或不出现M+,1~7均以CpTiF2离子为基峰。高质量区的主要特征碎片离子有[M-·cp]+、[M-R]+(1~3)和氟重排离子。在低质量区出现一系列二茂钛及茂钛氟重排离子。 1、4~7的NICI(CH4)质谱中,4、5出现强的M-离子峰,1出现[M-1]-离子峰,有两个钛的环状结构化合物6和7出现双电荷M=离子峰,而不出现M-。
【Abstract】 The EI and NICI mass spectra of seven new fluoro-containing organicacid derivatives of bis-cyclopentadienyl titanium (1-7) were investigated.The EI massspectra of 1,3,7 did not show any molecular ion peak,while those of 2,4,5,6 showedweak molecular ion peaks.In high mass region,the characteristic fragment ion [M—Cp]~+was observed,and in low mass region,a series of cyclopentadienyl titanium ions andrearrangement ions of cyclopentadienyl fluoro-titanium were identified.The NICI massspectra of 1,4,5 exhibited strong molecular ion peaks,while those of 6,7 showed doublecharge molecular ion peaks.
【Key words】 Organofluorine compound; organotitanium; cyclopentadiene (P); dicarboxylic acid; mass spectrography.;
- 【文献出处】 有机化学 ,Chinese Journal of Organic cHEMISTRY , 编辑部邮箱 ,1984年03期
- 【被引频次】1
- 【下载频次】24