Baggio-Yoshinari Syndrome: A Report of Five Cases.

Compared to classic Lyme disease (LD), Baggio-Yoshinari syndrome (BYS) has the following distinctive characteristics: it is transmitted in the Amazon area and Northeast, Central-West, Southeast, and South regions of Brazil by hard ticks, notably or sp. The absence of sp. ticks in areas at risk of BYS in Brazil is probably the main reason for the disease's differences from LD in the United States, Europe, and Asia.

Sulfide-Induced Dimerization Versus Demetallation of Tricopper(I) Clusters Protected by Tris-Thiolato Metalloligands.

Here, we report the reactivity of copper(I) clusters toward sulfide ions; these sulfide copper(I) clusters have attracted much attention due to their relevance to biologically active centers and their fascinating structural and photophysical properties. Treatment of the Cu Rh pentanuclear complex, [Cu{Rh(aet)}] (aet=2-aminoethanethiolate), in which a {Cu } cluster moiety is bound by two fac-[Rh(aet)] metalloligands, with NaSH in water produced the Cu Rh decanuclear complex, [CuS{Rh(aet)}], accompanied by the dimerization of [Cu{Rh(aet)}] and the incorporation of a sulfide ion at the center. While similar treatment using the analogous Cu Ir complex with fac-[Ir(aet)] metalloligands, [Cu{Ir(aet)}], produced the isostructural Cu Ir decanuclear complex, [CuS{Ir(aet)}], the use of the Cu Rh complex with fac-[Rh(apt)] metalloligands, [Cu{Rh(apt)}] (apt=3-aminopropanethiolate), resulted in the removal of one of the three Cu atoms from {Cu } to afford the Cu Rh tetranuclear complex, [Cu{Rh(apt)}].

Polymorphism and Its Influence on Catalytic Activities of Lanthanide-Glutamate-Oxalate Coordination Polymers.

To study the relationship between polymorphism and catalytic activities of lanthanide coordination polymers in the cycloaddition reactions of CO with epoxides, the monoclinic and triclinic polymorphs of [Ln(NH-Glu)(ox)]·2HO, where Ln = La (), Pr (), Nd (), Sm ), Eu (), Gd (), Tb (), and Dy (), NH-Glu = NH containing glutamate, and ox = oxalate, were synthesized and characterized. Factors determining polymorphic preference, the discrepancy between the two polymorphic framework structures, potential acidic and basic sites, thermal and chemical stabilities, active surface areas, void volumes, CO sorption/desorption isotherms, and temperature-programmed desorption of NH and CO are comparatively presented. Based on the cycloaddition of CO with epichlorohydrin in the presence of tetrabutylammonium bromide under solvent-free conditions and ambient pressure, catalytic activities of the two polymorphs were evaluated, and the relationship between polymorphism and catalytic performances has been established.

Postsynthetic Installation of Lanthanide Cubane Clusters in a 3D Hydrogen-Bonded Framework of IrZn Multicarboxylates.

Immersing single crystals of (Δ)-K[IrZnO(l-cysteinate)]·HO (K[]·HO) bearing 12 free carboxylate groups, which was newly prepared from Δ-H[Ir(l-cysteinate)], ZnBr, ZnO, and KOH, in an aqueous solution of lanthanide(III) acetate produced Ln[]·HO (; Ln = La, Ce, Pr, and Nd) and Ln[Ln(OH)(OAc)(HO)][]·HO (; Ln = Sm, Eu, Gd, Tb, Dy, Er, Ho, Tm, Yb, and Lu) in a single-crystal-to-single-crystal transformation manner. X-ray crystallography showed that the K ions in K[]·HO are completely exchanged by the Ln ions in and , retaining the 3D hydrogen-bonded framework that consists of the IrZn complex anions of []. While contained the Ln ions as isolated aqua species, the Ln ions in existed as cationic cubane clusters of [Ln(OH)(OAc)(HO)]; these were linked by [] anions through carboxylate groups in a 3D polymeric structure.