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Keihei Ueno

Bio: Keihei Ueno is an academic researcher. The author has an hindex of 1, co-authored 1 publications receiving 283 citations.

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Journal ArticleDOI
TL;DR: In this paper, a review describes Schiff bases of potential biological interest; for example, nickel compounds have been used in jack beam urease and in some hydrogenases, and the use of these compounds in catalytic reactions has also been considered.

341 citations

Journal ArticleDOI
TL;DR: In this paper, the discrete trinuclear complex (NEt4) was synthesized in the monoclinic space group P21/c with cell dimensions of a = 13.104, b = 12.861, c = 15.526, and β = 105.98.
Abstract: The discrete trinuclear complex [(NEt4){Mn(H2O)(5-Cl-salen)}2{Fe(CN)6}]·H2O, 3, and a two-dimensional heterometal assembly [(NEt4){Mn(5-Cl-salen)}2{Fe(CN)6}]n, 4, have been prepared (NEt4 = tetraethylammonium, 5-Cl-salen = N,N‘-ethylenebis(5-chlorosalicylidene)aminato) dianion). Compound 4 crystallizes in the monoclinic space group P21/c with cell dimensions of a = 13.104(3) A, b = 12.861(3) A, c = 15.526(2) A, β = 105.98(1)°, Z = 2 and is isostructural to the previously synthesized metamagnetic compound, [K{Mn(3-MeOsalen}2{Fe(CN)6}·2DMF]n, 5. The structure assumes a two-dimensional network consisting of the cyclic tetramer (−Mn−NC−Fe−CN−)4 as a net unit [with dimensions of Fe−C1 = 1.947(8) A, Fe−C2 = 1.951(8) A, Mn−N1 = 2.286(7) A, Mn−N2 = 2.266(7) A, Mn−N−C = 154.4(7)°, Mn−N−C = 146.1(7)°]. The magnetic study (magnetic susceptibility vs T, field-cooled magnetization and zero-field cooled magnetization vs T, hysteresis loop and saturation magnetization vs H up to 55 kOe) shows that the compound is a meta...

171 citations

Journal ArticleDOI
TL;DR: Compound 3 was proven to be a broad spectrum agent and showed a significant inhibition of the growth of Gram-positive bacteria and pathogenic fungi and was found to be non-toxic to human erythrocytes even at a concentration of 500mug/mL.

149 citations