Synthesis, crystal structure, EPR spectra of Cu2+ doped catena-poly[[diaquabis(methylisonicotinate-N)cadmium(II)]-μ-(sulfato-O:O′)] single crystal

Bozkurt, Esat; Döner, Ahmet; Uçar, İbrahim; Karabulut, Bünyamin

doi:10.1016/j.cplett.2010.12.036

Cited by 13 publications

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References 26 publications

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“…The υ 1 stretching [υ(SO)] and υ 2 bending [δ(OSO)] fundamentals are not IR-active. However, the coordination of SO 4 2- to metal ions in a bidentate fashion decreases the symmetry of the group and the υ 3 and υ 4 modes may be split [ 15 - 17 ]. For the sulfato complex ( 5 ) in this study, the chelating bidentate nature of the SO 4 2- group is indicated by the strong band at 1100 cm -1 ; ν 3 (S-O) as well as a medium band at 657 cm -1 ; ν 4 [δ(OSO)] characteristic for the tetrahedral (T d ) point group.…”

Section: Resultsmentioning

confidence: 99%

Transition metal complexes of an isatinic quinolyl hydrazone

Seleem

2011

Chemistry Central Journal

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BackgroundThe importance of the isatinic quinolyl hydrazones arises from incorporating the quinoline ring with the indole ring in the same compound. Quinoline ring has therapeutic and biological activities. On the other hand, isatin (1H-indole-2,3-dione) and its derivatives exhibit a wide range of biological activities. Also, the indole ring occurs in Jasmine flowers and Orange blossoms. Recently, the physiological and biological activities of quinolyl hydrazones arise from their tendency to form metal chelates with transition metal ions. In this context, we have reported to isolate, characterize and study the biological activity of some transition metal complexes of an isatinic quinolyl hydrazone; 3-[2-(4-methyl quinolin-2-yl)hydrazono] indolin-2-one.ResultsMono- and binuclear as well as dimeric chelates were obtained from the reaction of a new isatinic quinolyl hydrazone with Fe(III), Co(II), Ni(II), Cu(II), VO(II) and Pd(II) ions. The ligand showed a variety of modes of bonding viz. (NNO)2-, (NO)- and (NO) per each metal ion supporting its ambidentate and flexidentate characters. The mode of bonding and basicity of the ligand depend mainly on the type of the metal cation and its counter anion. All the obtained Pd(II)- complexes have the preferable square planar geometry (D4h- symmetry) and depend mainly on the mole ratio (M:L).ConclusionThe effect of the type of the metal ion for the same anion (Cl-) is obvious from either structural diversity of the isolated complexes (Oh, Td and D4h) or the various modes of bonding. The isatinic hydrazone uses its lactim form in all complexes (Cl-) except complex 5 (SO42-) in which it uses its lactam form. The obtained Pd(II)- complexes (dimeric, mono- and binuclear) are affected by the mole ratio (M:L) and have the square planar (D4h) geometry. Also, the antimicrobial activity is highly influenced by the nature of the metal ion and the order for S. aureus bacteria is as follows: Nickel(II) > Vanadyl(II) > Cobalt(II) > Copper(II) ≈ Palladium(II) >> Iron(III).

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Section: Resultsmentioning

confidence: 99%