Abstract The synthesis and structure of [Cu(2-Br-4-HOpy)2(2-Br-4-pyone)2](ClO4)2 • 2(2-Br-4-HOpy) • 2(2-Br-4-pyone) is reported [2-Br-4-HOpy = 2-bromo-4-hydroxypyridine; 2-Br-4-pyone = 2-bromo-(1H)4-pyridone]. The compound forms as a co-crystal in the triclinic P-1 space group with four-coordinate Cu(II) ions and perchlorate geganions interacting with both the hydroxypyridine and pyridone forms of the organic molecule through hydrogen and halogen bonding. The coordination complex exhibits the unusual coordination motif of having both the hydroxypyridine and pyridone tautomers of the ligand coordinated to the same metal ion. The isolation of the Cu complex by the organic groups suggests an absence of magnetic exchange within the sample which is confirmed by variable temperature magnetization measurements and EPR data.

中文翻译：

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羟基吡啶/吡啶酮配体的异常配位行为：[(2-bromo-4-hydroxypyridine)2(2-bromo-1(H)-4-pyridone)2copper(II)]高氯酸盐的合成和结构 • 2(2-溴-4-羟基吡啶) • 2(2-溴-1(H)-4-吡啶酮)

摘要 [Cu(2-Br-4-HOpy)2(2-Br-4-pyone)2](ClO4)2•2(2-Br-4-HOpy)•2(2-Br)的合成与结构-4-pyone) [2-Br-4-HOpy = 2-bromo-4-hydroxypyridine; 2-Br-4-pyone = 2-溴-(1H)4-吡啶酮]。该化合物在三斜 P-1 空间群中形成共晶，四配位 Cu(II) 离子和高氯酸根离子通过氢键和卤素键与有机分子的羟基吡啶和吡啶酮形式相互作用。配位配合物表现出不寻常的配位基序，即配体的羟基吡啶和吡啶酮互变异构体与同一金属离子配位。有机基团对 Cu 复合物的分离表明样品中不存在磁性交换，这通过可变温度磁化测量和 EPR 数据得到证实。