The [Dy(DippForm)2Cl(THF)] (1a) and [Tb(DippForm)2Cl(THF)2] (1b) complexes are synthesized using salt metathesis reactions between lanthanide chlorides and K(DippForm) (DippForm = N,N′-bis(2,6-diisopropylphenyl)formamidinate). In contrast to K(DippForm), a reaction of its less sterically demanding analogue K(MesForm) (MesForm = N,N′-bis(mesityl)formamidinate) with LnCl3 at any ratio of the reagents leads to the formation of the homoligand [Ln(MesForm)3] (Ln = Dy (2a), Tb (2b)) complexes. The [Ln(MesForm)2Cl(THF)] compounds are not isolated. Compounds 1a and 1b are successfully used as starting reagents for the preparation of new thiophenolate complexes [Ln(DippForm)2(SPh)(THF)] (Ln = Dy (3a), Tb (3b)). Crystal structures of compounds 1-3 are determined by single crystal X-ray diffraction. Photoluminescent properties of the complexes obtained are studied. The analysis of the spectra of both DippForm– and SPh– ligands shows an antenna effect for both Dy(III) and Tb(III). However, MesForm– acts as an efficient antenna for Tb(III) rather than Dy(III).

中文翻译：

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由甲酰胺配体支持的镧系元素 (Ln = Dy, Tb) 氯化物和噻吩酚盐的合成、结构和光致发光特性

[Dy(DippForm)2Cl(THF)] (1a) 和 [Tb(DippForm)2Cl(THF)2] (1b) 配合物是使用镧系元素氯化物和 K(DippForm) 之间的盐复分解反应合成的 (DippForm = N,N '-双(2,6-二异丙基苯基)甲脒酯)。与 K(DippForm) 相比，其空间要求较低的类似物 K(MesForm) (MesForm = N,N'-双(mesityl)formamidinate) 与 LnCl3 在任何试剂比例下的反应导致形成同配体 [ Ln(MesForm)3] (Ln = Dy (2a), Tb (2b)) 络合物。[Ln(MesForm)2Cl(THF)] 化合物未分离。化合物 1a 和 1b 成功用作制备新的苯硫酚络合物 [Ln(DippForm)2(SPh)(THF)] (Ln = Dy (3a), Tb (3b)) 的起始试剂。化合物1-3的晶体结构由单晶X射线衍射确定。研究了所得配合物的光致发光特性。DippForm- 和 SPh- 配体的光谱分析显示了 Dy(III) 和 Tb(III) 的天线效应。然而，MesForm– 充当了 Tb(III) 而不是 Dy(III) 的有效天线。