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Influence of the steric properties of pyridine ligands on the structure of complexes containing the {LnCd2(bzo)7} fragment |
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| Authors: | Shmelev M A Voronina Yu K Gogoleva N V Sidorov A A Kiskin M A Dolgushin F M Nelyubina Yu V Aleksandrov G G Varaksina E A Taydakov I V Eremenko I L |
| Institution: | 1.N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky prosp., 119991, Moscow, Russian Federation ;2.A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 119991, Moscow, Russian Federation ;3.P. N. Lebedev Physical Institute, Russian Academy of Sciences, 53 Leninsky prosp., 119333, Moscow, Russian Federation ;4.Moscow Institute of Physics and Technology, 9 Institutskiy per., 141700, Dolgoprudny, Moscow region, Russian Federation ; |
| Abstract: | 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), 3EuCd2(bzo)7(H2O)2(phtd)2] · 4phtd (8), EuCd2(bzo)7(EtOH)3(cdpy)] (9), 2EuCd2-(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. |
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