Complexes of iron(II), iron(III) and zinc(II) with condensation derivatives of 2-acetylpyridine and oxalic or malonic dihydrazide. Crystal structure of tris[(1-(2-pyridyl)ethylidene)hydrazine]iron(II) perchlorate

Author： Anđelković Katarina  

Publisher： Springer Publishing Company

ISSN： 0340-4285

Source： Transition Metal Chemistry, Vol.30, Iss.2, 2005-03, pp. : 243-250

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

Previous Menu Next

Abstract

Complexes of zinc and iron with N′, N′2-bis[(1E)-1-(2-pyridyl)ethylidene]ethanedihydrazide (H2L1) and N′ ,N′2-bis[(1E)-1-(2-pyridyl)ethylidene]propanedihydrazide (H2L2) were prepared. ZnII complexes with both ligands have an octahedral geometry. In the complex of ZnII with H2L1, the ligand is coordinated as a tridentate species in the monoanionic form, building two five-membered rings around ZnII. Three remaining coordination sites are occupied by water molecules, and in the outer sphere there is a ClO 4− ion. In the other ZnII complex, the H2L2 ligand is coordinated in the enol form as a tetradenate species, forming a five-memebered, a six-membered and a seven-membered ring, the remaining coordination sites being occupied by water molecules, while in the outer sphere there are two ClO 4− ions. The FeIII complex with H2L2 is a high-spin octahedral complex. The ligand is coordinated in the enol form, in a tetradentate fashion via pyridine and hydrazone nitrogens. The remaining two coordination sites in the complex are occupied by water molecules and a Cl− ion, and in the outer sphere there are two Cl− anions. The octahedral FeIII complex obtained from the reaction of FeCl3·6H2O and H2L1 in absolute ethanol has the formula [Fe(HL1)Cl2(H2O)]·1.5H2O. However, during coordination of the H2L1 ligand to FeIII in water, oxidative degradation of the side chain (–CO–CO–) and reduction of FeIII to FeII occurs, affording octahedral tris(1-(2-pyridyl)ethylidenehydrazine] ironII perchlorate, as confirmed by X-ray structure analysis.

Related content

Interaction of manganese(II), iron(II), cobalt(II), nickel(II), copper(II) and zinc(II) with acetylhydrazine, formed in situ ; first crystal structure of tris(acetylhydrazine) nickel(II) perchlorate

By Shakir Mohammad   Parveen Shama   Begum Nishat   Azim Yasser  

Transition Metal Chemistry, Vol. 29, Iss. 8, 2004-11 ,pp. : 916-920 (5)

Springer Publishing Company

Access to resources Recommend Favorite

Cytotoxic activity of iron(III), cobalt(III), nickel(II), zinc(II), and cadmium(II) complexes of 2-acetylpyrazine thiosemicarbazone: crystal structure of the cobalt(III) complex

By Zhang Dong   Li Qian   Li Ming-Xue   Chen Dan-Yun   Niu Jing-Yang  

Journal of Coordination Chemistry, Vol. 63, Iss. 6, 2010-03 ,pp. : 1063-1070 (8)

Taylor & Francis Ltd

Access to resources Recommend Favorite

Mononuclear complexes of manganese(II), iron(II), cobalt(II), nickel(II), copper(II), and zinc(II), with 4‐amino‐3,5‐bis(pyridin‐2‐yl)‐1,2,4 triazole and tris(2‐aminoethyl) amine: crystal structure of [Ni(tren)(abpt)](NO 3 ) 2 (H 2 O) 2.25

By Shakir Mohammad   Parveen Shama   Begum Nishat   Chingsubam Poonam  

Transition Metal Chemistry, Vol. 29, Iss. 2, 2004-03 ,pp. : 196-199 (4)

Springer Publishing Company

Access to resources Recommend Favorite

Synthesis and crystal structure determination of copper(II) and iron(III) complexes of 2-(2-pyridyl)benzothiazole

By Marjani Katayoun  

Transition Metal Chemistry, Vol. 34, Iss. 1, 2009-02 ,pp. : 85-89 (5)

Springer Publishing Company

Access to resources Recommend Favorite

Complexes of N-phenyl-N′-2-furanthiocarbohydrazide with oxovanadium(IV), manganese(III), iron(III), cobalt(II), nickel(II), copper(II) and zinc(II)

By Singh N.K.  

Transition Metal Chemistry, Vol. 26, Iss. 1-2, 2001-02 ,pp. : 140-146 (7)

Springer Publishing Company

Access to resources Recommend Favorite