The reaction of Cd(NO3)2 · 4H2O and Eu(NO3)3 · 6H2O or Tb(NO3)3 · 6H2O with potassium 3,5-di-tert-butylbenzoate (Kbzo) and N-donor ligands (1,10-phenanthroline (phen), 2,4-lutidine (2,4-lut), 3,4-lutidine (3,4-lut), phenanthridine (phtd), 2,3-cyclododecenopyridine (cdpy), acridine (acr)) afforded heterometallic LnCd2 complexes: [EuCd2(bzo)7(EtOH)2(phen)] (2), [LnCd2(bzo)7(2,4-lut)4] (Ln = Eu (3), Tb (4)), [EuCd2(bzo)7(H2O)2(2,4-lut)2] · MeCN (5), [EuCd2(NO3)(bzo)6(EtOH)2(2,4-lut)2] (6), [EuCd2(bzo)7(H2O)(EtOH)(3,4-lut)2] · 5EtOH (7), 3[EuCd2(bzo)7(H2O)2(phtd)2] · 4phtd (8), [EuCd2(bzo)7(EtOH)3(cdpy)] (9), 2[EuCd2-(bzo)2(EtOH)4] · acr (10). The structures of complexes 2, 3, and 5–10 were determined by single-crystal X-ray diffraction. The isostructurality of complexes 3 and 4 was confirmed by powder X-ray diffraction. The structure of the trinuclear {Ln2Cd} metal core is stable and independent of the type of peripheral ligands coordinated to cadmium atoms. Photoluminescent properties of compounds 3 and 4 were studied.

中文翻译：

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吡啶配体的空间性质对含有{LnCd2(bzo)7}片段的配合物结构的影响

Cd(NO3)2·4H2O 和 Eu(NO3)3·6H2O 或 Tb(NO3)3·6H2O 与 3,5-二叔丁基苯甲酸钾 (Kbzo) 和 N-供体配体 (1,10-菲咯啉 (phen), 2,4-二甲基吡啶 (2,4-lut), 3,4-二甲基吡啶 (3,4-lut), 菲啶 (phtd), 2,3-环十二碳烯吡啶 (cdpy), 吖啶 (acr))得到异金属 LnCd2 配合物：[EuCd2(bzo)7(EtOH)2(phen)] (2), [LnCd2(bzo)7(2,4-lut)4] (Ln = Eu (3), Tb (4) ), [EuCd2(bzo)7(H2O)2(2,4-lut)2] · MeCN (5), [EuCd2(NO3)(bzo)6(EtOH)2(2,4-lut)2] ( 6), [EuCd2(bzo)7(H2O)(EtOH)(3,4-lut)2]·5EtOH (7), 3[EuCd2(bzo)7(H2O)2(phtd)2]·4phtd (8) )、[EuCd2(bzo)7(EtOH)3(cdpy)](9)、2[EuCd2-(bzo)2(EtOH)4]·acr(10)。配合物 2、3 和 5-10 的结构由单晶 X 射线衍射确定。通过粉末 X 射线衍射证实了配合物 3 和 4 的同构性。三核 {Ln2Cd} 金属核的结构是稳定的，与与镉原子配位的外围配体的类型无关。研究了化合物3和4的光致发光特性。