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Hexanuclear Cu3O–3Cu triazole-based units as novel core motifs for high nuclearity copper(ii) frameworks†
RSC Advances ( IF 3.9 ) Pub Date : 2019-09-17 00:00:00 , DOI: 10.1039/c9ra05922a
Sacramento Ferrer 1 , Javier Hernández-Gil 1 , Francisco Javier Valverde-Muñoz 2 , Francisco Lloret 2 , Alfonso Castiñeiras 3
RSC Advances ( IF 3.9 ) Pub Date : 2019-09-17 00:00:00 , DOI: 10.1039/c9ra05922a
Sacramento Ferrer 1 , Javier Hernández-Gil 1 , Francisco Javier Valverde-Muñoz 2 , Francisco Lloret 2 , Alfonso Castiñeiras 3
Affiliation
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The asymmetric 3,5-disubstituted 1,2,4-triazole ligand H2V (5-amino-3-picolinamido-1,2,4-triazole) by reaction with an excess of Cu(II) perchlorate (Cu : H2V being 12 : 1) has produced a novel hexanuclear {Cu6(μ3-O/H)(HV/V)3} fragment, with one triangular Cu3(μ3-O/H) group connected to three peripheral single Cu(II) ions through a cis–cis–trans bridging mode of the ligand, which is the building block of the three structures described here: one hexanuclear, [Cu6(μ3-O)(HV)3(ClO4)7(H2O)9]·8H2O (1), one dodecanuclear, [Cu12(μ3-O)2(V)6(ClO4)5(H2O)18](ClO4)3·6H2O (2), and one tetradecanuclear 1D-polymer, {[Cu14(μ3-OH)2(V)6(HV)(ClO4)11(H2O)20](ClO4)2·14H2O}n (3), the last two containing hexanuclear subunits linked by perchlorato bridges. The Cu–Cu av. intra-triangle distance is 3.352(2) Å and the Cu(central)–Cu(bridged external) av. distance is 5.338(3) Å. The magnetic properties of the hexanuclear “Cu3O–3Cu” cluster have been studied, resulting as best fit parameters: g = 2.18(1), J(intra-triangle) = −247.0(1) cm−1 and j(central CuII – external CuII) = −5.15(2) cm−1.
中文翻译：
六核 Cu3O–3Cu 三唑基单元作为高核铜 (ii) 框架的新型核心基序†
通过与过量的高氯酸铜 ( II ) ( Cu : H 2 V 为 12 : 1) 产生了一种新颖的六核 {Cu 6 (μ 3 -O/H)(HV/V) 3 } 片段，其中一个三角形 Cu 3 (μ 3 -O/H) 基团连接到三个外围单个 Cu( II ) 离子通过配体的顺式-顺式-反式桥接模式，这是此处描述的三种结构的构建块：一个六核，[Cu 6 (μ 3 -O)(HV)3 (ClO 4 ) 7 (H 2 O) 9 ]·8H 2 O ( 1 ), 1 个十二核, [Cu 12 (μ 3 -O) 2 (V) 6 (ClO 4 ) 5 (H 2 O) 18 ] (ClO 4 ) 3 ·6H 2 O ( 2 )和一种十四核一维聚合物，{[Cu 14 (μ 3 -OH) 2 (V) 6 (HV)(ClO 4 ) 11 (H 2 O) 20](ClO 4 ) 2 ·14H 2 O} n ( 3 )，最后两个含有由高氯酸根桥连接的六核亚基。铜-铜 av。三角形内距离为 3.352(2) Å，Cu（中央）-Cu（桥接外部）av。距离为 5.338(3) Å。已经研究了六核“Cu 3 O–3Cu”簇的磁性，得出最佳拟合参数：g = 2.18(1)，J（三角形内）= -247.0(1) cm -1和j（中央Cu II – 外部 Cu II ) = -5.15(2) cm -1。
更新日期：2019-09-17
中文翻译：
六核 Cu3O–3Cu 三唑基单元作为高核铜 (ii) 框架的新型核心基序†
通过与过量的高氯酸铜 ( II ) ( Cu : H 2 V 为 12 : 1) 产生了一种新颖的六核 {Cu 6 (μ 3 -O/H)(HV/V) 3 } 片段，其中一个三角形 Cu 3 (μ 3 -O/H) 基团连接到三个外围单个 Cu( II ) 离子通过配体的顺式-顺式-反式桥接模式，这是此处描述的三种结构的构建块：一个六核，[Cu 6 (μ 3 -O)(HV)3 (ClO 4 ) 7 (H 2 O) 9 ]·8H 2 O ( 1 ), 1 个十二核, [Cu 12 (μ 3 -O) 2 (V) 6 (ClO 4 ) 5 (H 2 O) 18 ] (ClO 4 ) 3 ·6H 2 O ( 2 )和一种十四核一维聚合物，{[Cu 14 (μ 3 -OH) 2 (V) 6 (HV)(ClO 4 ) 11 (H 2 O) 20](ClO 4 ) 2 ·14H 2 O} n ( 3 )，最后两个含有由高氯酸根桥连接的六核亚基。铜-铜 av。三角形内距离为 3.352(2) Å，Cu（中央）-Cu（桥接外部）av。距离为 5.338(3) Å。已经研究了六核“Cu 3 O–3Cu”簇的磁性，得出最佳拟合参数：g = 2.18(1)，J（三角形内）= -247.0(1) cm -1和j（中央Cu II – 外部 Cu II ) = -5.15(2) cm -1。
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