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Article Abstract
Two new trinuclear zinc(II) complexes, [Zn3I2L2(H2O)2] (1) and [Zn3(CH3OH)(DMF)L2(NCS)2] (2), where L is the dianionic form of N,N'-bis(5-bromosalicylidene)-1,2-cyclohexanediamine (H2L), have been synthesized and characterized by elemental analyses, IR and UV spectra. Structures of the complexes were further confirmed by single crystal X-ray diffraction. Both complexes are trinuclear zinc compounds. Both compounds are solvated, with water ligand for 1 and methanol ligand for 2. The outer two Zn atoms are in square pyramidal coordination, while the inner one is in octahedral coordination. The effect of the complexes on the antimicrobial activity against Staphylococcus aureus, Escherichia coli and Candida albicans were evaluated, and gave interesting results.
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Four new nickel(II), zinc(II) and manganese(III) complexes, [NiL] (1), [Zn3L2(OAc)2] (2), [ZnL(CH3OH)] (3) and [MnClL(DMF)] (4), derived from the bis-Schiff base N,N'-bis(4-bromosalicylidene)propane-1,2-diamine (H2L) have been prepared and characterized by spectroscopy methods, as well as single crystal X-ray determination. The Ni atom in the mononuclear nickel complex 1 is in square planar coordination. The outer and inner Zn atoms in the trinuclear zinc complex 2 are in square planar and octahedral coordination, respectively.
View Article and Find Full Text PDFSynthesis and Crystal Structure of Zn(OAc)[EMIM], a Novel Ionic Compound with Isolated Homoleptic Trinuclear Metal Clusters.
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Hawai'i Institute of Geophysics and Planetology, University of Hawai'i at Ma̅noa, 1680 East West Road, Post 602, Honolulu, Hawaii 96822, United States.
We synthesized and characterized a novel anhydrous zinc(II) aceto 1-ethyl-3-methylimidazolium (EMIM) coordination compound with the simplified empirical formula Zn(OAc)[EMIM]. The title compound is structurally related to recently reported Mn(OAc)[EMIM], and Fe(OAc)[EMIM]. While in the other two ionic salts metal cations were organized in infinite chains of corner-sharing octahedra, Zn in Zn(OAc)[EMIM] assumes two different coordination environments, including Zn(OAc) octahedra and Zn(OAc) tetrahedral sites, linked together by carboxylate oxygen-sharing to form isolated [Zn(OAc)] trinuclear linear clusters.
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Article Synopsis
- Diethyl cyanophosphonate (DCNP) is a dangerous pollutant found in pharmaceutical waste that poses risks to living organisms, and a new trinuclear zinc(II) cluster has been developed to selectively detect and degrade it.
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