Two new ferrocenylhydrazone-based receptors FcL 1 and FcL 2 were prepared and the X-ray crystal structure of FcL 1 was described. The electrochemical studies reveal that the receptor FcL 1 is responsive to Hg 2+ and Cr 3+ , whereas, receptor FcL 2 only responsive to Hg 2+ . The maximum electrochemical shift of FcL 1 for Cr 3+ is about 56 mV.
A binuclear macroheterocyclic complex Zn 2 (FcL) 2 based on ferrocene-thiocarbazide (FcL) was synthesized. X-ray diffraction analysis shows that it belongs to the monoclinic system P2(1)/n space group, with a ¼ 1.35379 (17) (2) and final R indices R ¼ 0.0796 and Rw ¼ 0.2119. Two Zn(II) ions and two FcL ligands form a 22-membered macroheterocycle, further extended to an infinite 1-D helical chain by intermolecular hydrogen bonding. Spectral properties of the title complex and electrochemical properties of the ligand FcL are also discussed.
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