Synthesis, crystal structure, and properties of a binuclear Zn(II) macroheterocyclic complex based on ferrocene-thiocarbazide ligand

Abstract

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.

Synthesis and structural characterization of ferrocenyl indenyl derivatives

“…Cyclic voltammetry and calculations showed that the redox potential of the ferrocenyl unit increased with enlargement of the conjugated system of the ferrocenyl indenyl derivatives. Usually, positive shift of the redox potentials of ferrocenyl units is attributed to the effect of electron-withdrawing groups [32][33][34], but in the present system, enlargement of the conjugated system exhibited similar effect.…”

Synthesis, Crystal Structure and Electrochemistry of Carbon-Bridged Diferrocenyl Compounds

“…The selected bond lengths and bond angles were listed in Table- The compounds A and C crystallized in the monoclinic space group P21/c, but the compound B crystallizes in the monoclinic space group P2/c and in the form of centrosymmetric structure. From the single crystal data of the three compounds A, B and C, it can be seen that the average bond (16) 1.501 (2) 111.55 (14) oxidation peak potentials of compounds A, B and C are ∆EA = 187 mV, ∆EB = 210 mV and ∆EC = 158 mV, respectively (Table-3). The differences value is greater than 100 mV, which indicates the stronger electronic communication between two ferrocenyl units 22 .…”

“…The current research interests were concentrated not only on how to construct these atom-bridged differrocene systems, but also on the electrochemical interaction between the two ferrocenyl units. Generally, the redox potential difference value (∆E) between the two ferrocenyl units provides an electrochemical method for direct measurement of electrochemical interaction and the potential difference values are affected by the bridged atom 10 , the type of bridge [11][12][13][14][15] , the distance between the oxidation center and reduction center 16 , the charge density of the bridge 17 and the molecular topology 18 . Watts and co-workers 1 had proposed that there are two types of electrochemical interaction modes between the two ferrocenyl units of atom-bridged diferrocenyl compound.…”

Synthesis, studies and electrochemical of complexes hydrazones containing a ferrocene fragment: a short review

“…Fig.1: Structure of complexes ligands II and III with ions metals receptors (10). The same year, C.Qiao et al synthesized a new ligand with the binuclear Zn 2+ complex based on ferrocene thiocarbazide IV fig.2(11). The ligand displays a stronger electrochemical property (135 mv) in the presence of the Zn2 + receptor ion.…”

“…The ligand displays a stronger electrochemical property (135 mv) in the presence of the Zn2 + receptor ion. As for the investigations of the ligand to the other receptors (Cu 2+ , Ni 2+ , Mn 2+ , Co 2+ , Cd 2+ , Ba 2+ et Pb 2+ ), the result is weak(11). Then the ligand IV fig.2can be a good sensor for detecting Zn 2+ ions in nonaqueous solution.…”