Structural diversity in the series of lanthanide complexes [Ln(Ph3PO)n(NCS)3] (n = 3, 4)
Structural diversity in the series of lanthanide complexes [Ln(Ph3PO)n(NCS)3] (n = 3, 4)
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镧系配合物系列的结构多样性 [Ln(Ph3PO)n(NCS)3] (n = 3, 4)
DOI:
10.1016/j.poly.2022.115826
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发表时间:
2022
期刊:
影响因子:
2.6
通讯作者:
Chan L
中科院分区:
文献类型:
--
作者:
Chan L
Two unique series of lanthanide complexes [Ln(Ph3PO)4(NCS)3] (Ln = La-Tb, except Pm) and [Ln(Ph3PO)3(NCS)3] (Ln = Sm-Lu, Y) have been structurally characterised. The isomorphous series [Ln(Ph3PO)4(NCS)3] crystallises in the monoclinic centrosymmetric space groupP21/c, and the metals display a capped octahedral coordination geometry. In contrast, the isomorphous series [Ln(Ph3PO)3(NCS)3] (Ln = Sm-Lu, Y) crystallise in the non-centrosymmetric space groupR3, with the metal displaying an octahedral coordination geometry; thefac-isomer being observed in all cases. Intriguingly, for the metals Sm-Tb both the seven and six coordinate complexes can be isolated from the respective synthetic routes suggesting a structural equilibrium in solution. An analysis of the distortions of the ligand polyhedron in the two series using the continuous shape measurement (CShMs) method suggests trends across the series relating to the fit of the ligands with the size of the lanthanide ions.
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影响因子:
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通讯作者:
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DOI:
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期刊:
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期刊:
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