Inorganica Chimica Acta p. 1 - 14 (2017)
Update date:2022-08-11
Topics:
Ghosh, Bipinbihari
Adak, Piyali
Naskar, Subhendu
Pakhira, Bholanath
Mitra, Partha
Dinda, Rupam
Chattopadhyay, Shyamal Kumar
Six Ru(II) complexes with formula [Ru(terpy)(L)]X (L = tridentate N,N,S?donor thiosemicarbazone ligands, X = PF6?) have been synthesized and characterized by using standard analytical and spectroscopic techniques. The X-ray crystal structures of the complexes [Ru(terpy)(L2)]PF6(2) and [Ru(terpy)(L3)]PF6(3) have been determined. It was found that during complexation the hydroxyimino functionality of the parent ligands is converted to imine, which participates in coordination through the N-atom. The complexes are found to undergo two quasi-reversible oxidations on the positive side of the potential window (0 to +0.8 V) and three successive quasi-reversible/irreversible reductions on the negative side of the potential window (0 to ?2 V). The fluoride sensing properties of all the complexes have been studied in solution using absorption spectra and1H NMR studies, as well as by cyclic voltammetric (CV) measurements. From the absorption titration studies the association constants and detection limit values of fluoride by the complexes have been determined. The association constant values were found to be reasonably high (logKa> 5) for complexes 3–6, and these values are one order of magnitude greater than those observed for the corresponding free thiosemicarbazones. Selective fluoride sensing by these complexes is also signaled by the development of vivid colors, visible with the naked eye.
View MoreShenyang NovPharm Technology Co., Ltd.
Contact:.+86-24-24165786
Address:Room 306, Hongjin Mansion, No. 36-1, Wanliutang Rd., Shenhe District, Shenyang, Liaoning, P.R.C.
Hangzhou jls Flame Retardants Chemical Co.,Ltd
Contact:+86-571-87250387/87250386
Address:MOGANSHAN RODA 1418# SHANGCHENG INDUSTRIAL PARK
Henan zhongda Biological Engineering Co., Ltd
Contact:86-28-18109029985
Address:shenzhou road,xuedian industrial estate,zhengzhou city,henan province CHN
Shandong Zhongcheng Barium Salt Co., Ltd
Contact:+86-15725732638
Address:No.29 baoxi road, hi-tech zone, zibo, shandong
Contact:+86-0760-85282375
Address:zhongjing road,zhongshan torch hi-tech industrial development zone
Doi:10.1039/c5tc01657f
(2015)Doi:10.1016/S0040-4039(00)76714-1
(1994)Doi:10.1515/znb-2018-0001
(2018)Doi:10.1021/ja00181a021
(1990)Doi:10.1016/j.molliq.2020.113888
(2020)Doi:10.1007/BF00474461
()