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Study of substituted aryldiazonium salts and their crown ethers complexes by XPS
Author(s) -
Wang DangHan,
Liu ShiHong,
Xu GuangZhi,
Sun XiangYu,
Zhao YaoXing
Publication year - 1985
Publication title -
acta chimica sinica english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 0256-7660
DOI - 10.1002/cjoc.19850030407
Subject(s) - chemistry , x ray photoelectron spectroscopy , crown ether , ether , crown (dentistry) , medicinal chemistry , binding energy , inorganic chemistry , polymer chemistry , organic chemistry , ion , medicine , physics , dentistry , nuclear magnetic resonance , nuclear physics
The complexes of fourteen substituted aryldiazonium salts RC 6 H 4 N 2 +BF 4 − (RH, p ‐CH 3 , p ‐NO 2 , p ‐I, p ‐Cl, p ‐F, m ‐Br, m ‐Cl. m ‐CH 3 , o ‐CH 3 , o ‐OCH 3 , o ‐NO 2 , o ‐Br, o ‐Cl) with crown ethers 18‐C‐6 (1) and dibenzo‐24‐c‐8 (2) have been studied by XPS. The results show that the chemical shifts of α‐N1s and β‐N1s of substituted aryldiazonium salts are closely related to the induction and conjugation effects of R groups. It is interesting to note that charge transfer(β‐N→O) take place upon complexation of substituted aryldiazonium salts with crown ethers. Therefore the decrease of binding energy of crown ether oxygen may be used as a measurement of the stabilities of these complexes.