Copper(II) and copper(I) tetrafluoroborate complexes with 4-(3,5-diphenyl-1H-pyrazol-1-yl)-6-(piperidin-1-yl)pyrimidine (L): Synthesis, structures and luminescence

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• 作者：Katerina A. Vinogradova^a ; Viktor P. Krivopalov^b ; Elena B. Nikolaenkova^b ; Natalia V. Pervukhina^a ; Dmitrii Yu. Naumov^a ; Lilia A. Sheludyakova^a ; ^c ; Mark B. Bushuev^a ; ^c ; ^{bushuev@niic.nsc.ru} ; ^{mark.bushuev@gmail.com}
• 关键词：Copper(II) ; Copper(I) ; Pyrazolylpyrimidines ; N-ligands ; Weakly coordinated anions ; Luminescence
• 刊名：Inorganica Chimica Acta
• 出版年：2012
• 期刊代码：40_00201693
• 类别：ch
• 出版时间：15 May, 2012
• 卷：386
• 期：Complete
• 页码：116-121
• 文件大小：628 K

摘要

Copper(II) and copper(I) complexes, [Cu^IIL₂(BF₄)₂]路0.5H₂O, [Cu^IL₂](BF₄)路2MeCN and [Cu^IL₂](BF₄)路H₂O, with 4-(3,5-diphenyl-1H-pyrazol-1-yl)-6-(piperidin-1-yl)pyrimidine (L) have been synthesized. The compound [Cu^IIL₂(BF₄)₂]路0.5H₂O was obtained in the M:L = 1:1 and 1:2 molar ratios in EtOH solutions. It represents an example of a complex containing coordinated BF₄^{鈭?/sup> anion. The Cu-F(BF₃) distances, 1.964(2) and 2.000(2) 脜, are the shortest for copper tetrafluoroborate complexes. The compounds [CuIL₂](BF₄)路2MeCN and [CuIL₂](BF₄)路H₂O were obtained in the M:L = 1:1 and 1:2 molar ratios in MeCN solutions. According to X-ray data, the molecules of L in the structures of [CuIIL₂(BF₄)₂]路0.5H₂O and [CuIL₂](BF₄)路2MeCN are coordinated to the copper atoms through N2(pyrazole) and N3(pyrimidine) atoms. The complex [CuIL₂](BF₄)路2MeCN is unstable in the ambient air and transforms into [CuIL₂(BF₄)]路H₂O. The complex [CuIL₂](BF₄)路H₂O was found to display orange photoluminescence.}