From calcium interaction to calcium electrochemical detection by [(C5H5)Fe(C5H4COCH=CHC6H4NEt2)] and its two novel structurally characterized derivatives

被引:18
|
作者
Maynadié, J
Delavaux-Nicot, B
Lavabre, D
Donnadieu, B
Daran, JC
Sournia-Saquet, A
机构
[1] CNRS, UPR 8241, Chim Coordinat Lab, F-31077 Toulouse 04, France
[2] Univ Toulouse 3, UMR 5623 CNRS, Lab Interact Mol & Reactivite Chim & Photochim, F-31062 Toulouse, France
关键词
D O I
10.1021/ic0345828
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
[(C5H5)Fe(C5H4COCH=CHC6H4NEt2)] (1) has been electrochemically evaluated toward different cations in solution. Calcium sensing by this compound and its two new derivatives [(C5H5)Fe(C5H4CO(CH=CH)(2)C6H4NMe2)] (2) and [(C5H5)Fe(C5H4CH=CHCOCH=CHC6H4NEt2)] (3) that exhibit a conjugated link between the ferrocene unit and the nitrogen atom has been thoroughly examined. Compounds 2 and 3 have been structurally characterized by single-crystal X-ray diffraction studies. The three related protonated species [1H][BF4] (4), [2H][BF4] (5), and [3H][BF4] (6) have been isolated in a good yield. NMR experiments clearly established that calcium interaction occurs in the vicinity of the carbonyl group, and mass spectrometry studies confirmed that this interaction, which involves several ligand-Ca2+ adducts, is complex. A combination of electrochemical and NMR experiments highlighted an original salt influence on the electrochemical calcium sensing result.
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页码:2064 / 2077
页数:14
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