کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1307147 | 975124 | 2009 | 7 صفحه PDF | دانلود رایگان |

A dinuclear vanadium 24-membered macrocycle with double-ring, [V2O2L2(μ-CH3COO)]− (H2L = 3,3′-(1,3,4-thiadiazole-2,5-diyl)bis(sulfane-diyl) bis(4-hydroxypent-3-en-2-one)), was prepared in high yield from the reaction of VO2(acac) with 2,5-dimercapto-1,3,4-thiadiazole dipotassium salt (K2SSS) and acetylacetone (Hacac) at room temperature. Its closure of 24-membered macrocycle has resulted from the formation of U-shape units via S–C bonding between original SSS2− and acac− ligands, while the bridging CH3COO− has created from an unexpected decomposition of Hacac. The obtained two products were characterized by single crystal X-ray diffraction, XRD, ESR, TGA and magnetism analyses. A possible mechanism for formation of the bimetal 24-membered macrocycle has been discussed.
A dinuclear vanadium 24-membered macrocycle with double-ring was prepared in high yield from the reaction of VO2(acac) with 2,5-dimercapto-1,3,4-thiadiazole dipotassium salt (K2SSS) and acetylacetone (Hacac) at room temperature. Its closure of 24-membered macrocycle has resulted from the formation of U-shape units via S–C bonding between original SSS2− and acac− ligands, while the bridging CH3COO− has created from an unexpected decomposition of Hacac. The obtained two products were characterized by single crystal X-ray diffraction, XRD, ESR, TGA and magnetism analyses. A possible mechanism for formation of the bimetal 24-membered macrocycle has been discussed.Figure optionsDownload as PowerPoint slide
Journal: Inorganica Chimica Acta - Volume 362, Issue 2, 20 January 2009, Pages 407–413