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antimony/dichloromethane
L'enllaç es desa al porta-retalls
9 resultats
Synthesis and Electrochemistry of Tetraphenylporphyrins Containing an Antimony-Carbon sigma-Bond.
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The following five antimony(V) tetraphenylporphyrins with sigma-bonded antimony-carbon bonds were synthesized: [(TPP)Sb(CH(3))(2)](+)PF(6)(-), [(TPP)Sb(OCH(3))(OH)](+)PF(6)(-), [(TPP)Sb(CH(3))(OH)](+)ClO(4)(-), [(TPP)Sb(CH(3))(OCH(3))](+)ClO(4)(-), and [(TPP)Sb(CH(3))(F)](+)PF(6)(-). Each compound
Second order non-linear optical activity of arsenic and antimony dithiolene complexes.
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Synthesis and characterization of dithiolene complexes of arsenic and antimony in trivalent state have been reported. A four coordinated structural motif results in a ladder like arrangement in the arsenic complex due to the inter-anionic As-S interaction which is replaced by Sb-π interaction with
Oxidation Pathways Involving a Sulfide-Endcapped Donor-Acceptor-Donor π-Conjugated Molecule and Antimony(V) Chloride.
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The oxidation pathways and products of a discrete, sulfide-endcapped donor-acceptor-donor (D/A/D) molecule, namely, propylenedioxythiophene-benzothiadiazole-propylenedioxythiophene, are investigated. The electrochemical and chemical oxidations proceed by two distinct routes. Specifically,
Fluorinated antimony(v) derivatives: strong Lewis acidic properties and application to the complexation of formaldehyde in aqueous solutions.
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As part of our ongoing studies of water tolerant Lewis acids, we have synthesized and investigated the properties of Sb(C6F5)3(O2C6Cl4), a fluorinated stiborane whose Lewis acidity approaches that of B(C6F5)3. While chloroform solutions of this Lewis acid can be kept open to air or exposed to water
Synthesis of branched D-xylofuranan by selective, ring-opening polymerization of silylated 1,5-anhydro-beta-D-xylofuranose, and its conversion into a blood anticoagulant.
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Selective ring-opening polymerization and copolymerization of 1,5-anhydro-D-xylofuranose derivatives were studied. Stereoregular (1----5)-alpha-D-xylofuranan was synthesized from a new monomer, 1,5-anhydro-2,3-di-O-(tert-butyldimethylsilyl)-beta-D-xylofuranose , with phosphorus pentafluoride and
Intramuscular and topical treatment of cutaneous leishmaniasis lesions in mice infected with Leishmania amazonensis using coumarin (-) mammea A/BB.
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Treatment of cutaneous leishmaniasis remains limited to a few available options. Recent studies showed in vitro antileishmanial activity of (-) mammea A/BB, a coumarin isolated from leaves of Calophyllum brasiliense. Moreover, the dichloromethane crude extract and hexane fraction from this plant
Residential proximity to industrial pollution sources and colorectal cancer risk: A multicase-control study (MCC-Spain)
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Background: Colorectal cancer is the third most frequent tumor in males and the second in females worldwide. In Spain, it is an important and growing health problem, and epidemiologic research focused on potential risk factors, such as
Achieving near-infrared emission in platinum(II) complexes by using an extended donor-acceptor-type ligand.
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A series of C^N ligands with donor-acceptor (D-A) frameworks, i.e. TPA-BTPy, TPA-BTPy-Fl and Fl(TPA-BTPy)2, as well as their mono- and di-nuclear platinum(II) complexes of (TPA-BTPy)Pt(pic), (TPA-BTPy-Fl)Pt(pic) and [Fl(TPA-BTPy)2]Pt2(pic)2 are respectively designed and synthesized, in which
Determination of alpha-solanine and alpha-chaconine in potatoes by high-performance thin-layer chromatography/densitometry.
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A high-performance thin-layer chromatographic (HPTLC) method was used to determine the glycoalkaloids alpha-solanine and alpha-chaconine in potatoes. Alpha-solanine and alpha-chaconine are extracted from dehydrated potatoes with boiling methanol-acetic acid (95 + 5, v/v). The analytes are separated
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