Structure and photoluminescence of silver(<scp>i</scp>) trinuclear halopyrazolato complexes
作者:Yui Morishima、David James Young、Kiyoshi Fujisawa
DOI:10.1039/c4dt01978d
日期:——
Luminescent silver(i) complexes of substituted halopyrazolate anions are either dimeric trinuclear or trinuclear structures held together with weak interactions.
发光银(i)配合物的卤代吡唑酚阴离子衍生物可以是二聚体三核结构或由弱相互作用保持在一起的三核结构。
Synthesis and Characterization of Monomeric (Aryloxo)iron Complexes: [Fe<sup>II</sup>L(OAr)] and [Fe<sup>III</sup>L(OAr)<sub>2</sub>] {L = BH(3,5-Pr<sup><i>i</i></sup><sub>2</sub>pz)<sub>3</sub><sup>−</sup>}
A series of (aryloxo)iron(II) complexes [FeBH(3,5-Pri2pz3}(OAr)] (Ar = C6H5 (4); C6H4-p-Cl (5); C6H4-p-F (6); C6H4-p-Me (7); C6H3-2,6-Cl2 (8); C6F5 (9)) were synthesized by the anion ligand replacement of [Fe(Cl)BH(3,5-Pri2pz)3}] (1) with NaOAr. Crystallography was performed for 1 and 9. All these tetrahedral (aryloxo)iron(II) complexes react with dioxygen readily, to afford the bis(aryloxo)iron(III) complexes [FeBH(3,5-Pri2pz)3}(OAr)2] (Ar = C6H5 (10); C6H4-p-Cl (11); C6H4-p-F (12); C6H4-p-Me (13); C6H3-2,6-Cl2 (14); C6F5 (16)) as sole isolable products (the maximum yield based on the iron(II) complex was ca. 50%). The MeCN adduct of 13 was structurally characterized by X-ray crystallography.
作者:H. V. Rasika Dias、Himashinie V. K. Diyabalanage、Mukunda M. Ghimire、Joshua M. Hudson、Devaborniny Parasar、Chammi S. Palehepitiya Gamage、Shan Li、Mohammad A. Omary
DOI:10.1039/c9dt03402a
日期:——
Described herein is the synthesis and photophysics of two tetranuclear copper complexes, [3,5-(Pri)2,4-(Br)Pz]Cu}4 and [3-(CF3),5-(But)Pz]Cu}4 tailor-designed by manipulating the pyrazolyl ring substituents. Unlike their trinuclear analogues, the luminescence of the tetranuclear species is molecular (not supramolecular) in nature with extremely high solid-state quantum yields of ∼80% at room temperature
Trimeric silver(I) pyrazolates with isopropyl, bromo, and nitro substituents: Synthesis and characterization of {[3,5-(i-Pr)2Pz]Ag}3, {[3,5-(i-Pr)2,4-(Br)Pz]Ag}3, and {[3,5-(i-Pr)2,4-(NO2)Pz]Ag}3
作者:H.V. Rasika Dias、Himashinie V.K. Diyabalanage
DOI:10.1016/j.poly.2005.11.017
日期:2006.5
Trimeric Ag(I) adducts of 3,5-di(isopropyl)pyrazole, 3,5-di(isopropyl),4-bromopyrazole, and 3,5-di(isopropyl),4-nitropyrazole have been synthesized by reacting the corresponding pyrazoles with silver(l) oxide. They have been characterized by X-ray crystallography as well as NMR and IR spectroscopic methods. Both [3,5-(i-Pr)(2)Pz]Ag}(3) and [3,5-(i-Pr)(2),4-(Br)Pz]Ag}(3) exist as pairs of trimers with weak Ag-Ag contacts, whereas [3,5-(i-Pr)(2),4-(NO2)Pz]Ag}(3) exists as trimers in the solid state with no inter trimer Ag-Ag contacts. (C) 2005 Elsevier Ltd. All rights reserved.
The crystal structure of 3,5-diisopropyl-4-nitropyrazole from X-ray powder diffraction data
The crystalstructure of 3,5-diisopropyl-4-nitropyrazole, 3c, has been determined by a Patterson Search method from laboratory X-ray powderdiffractiondata. The crystaldata are: monoclinic symmetry with the unit-cell parameters aa 19:530O5U; ba 6:485O1U and ca 17:937O3U A; ba 100:32O1U8; space group I2/a ,C 9H15N3O2, Za 8, 293 K. After indexing the powder pattern by two methods, the unit-cell parameters
3,5-二异丙基-4-硝基吡唑 3c 的晶体结构已通过 Patterson Search 方法从实验室 X 射线粉末衍射数据确定。晶体数据为:单斜对称,晶胞参数aa 19:530O5U;ba 6:485O1U 和 ca 17:937O3U A;巴 100:32O1U8; 空间群 I2/a ,C 9H15N3O2, Za 8, 293 K。通过两种方法索引粉末图案后,通过最小二乘法对找到的晶胞参数进行细化。使用完整的模式拟合程序来提取综合强度。以相关化合物作为搜索模型求解结构,最终 Rietveld 精修收敛到 Rwpa 0.1971 和 Rpa 0.1437。该结构通过氢键在 N 原子之间呈现二聚体构象。q 2001 Elsevier Science BV 版权所有。