Universität Leipzig, Institut für Anorganische Chemie, Johannisallee 29, D-04103 Leipzig, Germany.
Dalton Trans. 2012 Dec 14;41(46):14101-6. doi: 10.1039/c2dt31768k. Epub 2012 Oct 2.
The reactions of the tris(pyridyl)tin(II) derivative [Li(thf)Sn(2-py(R))(3)] (py(R) = C(5)H(3)N-5-Me) (1) with the heavier group 13 alkyl compounds MEt(3), M = Ga or In, have been carried out. These led to formation of [{Li(thf)Sn(2-py(R))(3)}MEt(3)] adducts, which exhibit long Sn-M bonds and can be used for further lanthanoid metal coordination via the salt metathesis reaction with [Eu(Cp*)(2)(OEt(2))] (Cp* = η(5)-C(5)Me(5)) to give complexes [Eu{Sn(2-py(R))(3)MEt(3)}(2)]. In contrast, addition of the lighter group 13 analogue, (AlMe(3))(2), to 1 resulted in a pyridyl transfer reaction, yielding dimeric AlMe(2)(2-py(R)). For comparison, the reaction of (AlMe(3))(2) with [Yb{Sn(2-py(R))(3)}(2)] (py(R) = C(5)H(3)N-3-Me) was explored, affording complex [Yb{Sn(2-py(R))(3)AlMe(3)}(2)]. All complexes have been characterised by NMR spectroscopy and X-ray crystallographic studies.
[Li(thf)Sn(2-py(R))(3)]（py(R) = C(5)H(3)N-5-Me）（1）与较重的第 13 族烷基化合物 MEt(3)（M = Ga 或 In）的反应已经进行。这些反应导致形成[{Li(thf)Sn(2-py(R))(3)}MEt(3)]加合物，其具有长的 Sn-M 键，并且可以通过与[Eu(Cp*)(2)(OEt(2))]（Cp* = η(5)-C(5)Me(5)）的盐交换反应进一步用于镧系金属配位，以给出配合物[Eu{Sn(2-py(R))(3)MEt(3)}(2)]。相比之下，将较轻的第 13 族类似物（AlMe(3))(2)添加到 1 中导致吡啶基转移反应，生成二聚体AlMe(2)(2-py(R))。为了进行比较，还探索了(AlMe(3))(2)与[Yb{Sn(2-py(R))(3)}(2)]（py(R) = C(5)H(3)N-3-Me）的反应，得到了配合物[Yb{Sn(2-py(R))(3)AlMe(3)}(2)]。所有配合物均通过 NMR 光谱和 X 射线晶体学研究进行了表征。
