Synthesis and Structures of Vinamidine MnII, ZnII, and CdII Iodine Derivatives
Synthesis and Structures of Vinamidine MnII, ZnII, and CdII Iodine Derivatives
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DOI：
10.1002/1099-0682(200106)2001:6
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发表时间：
2001-06
影响因子：
2.3
通讯作者：
J. Prust;K. Most;I. Müller;A. Stasch;H. Roesky;I. Usón
中科院分区：
文献类型：
--
作者：
J. Prust;K. Most;I. Müller;A. Stasch;H. Roesky;I. Usón
我们已经集中于单体的，官能化的起始材料的合成含有锰（II），锌（II），和镉（II）的优势，通过利用取代的vinamidine配体2-[（2，6-二异丙基苯基）氨基]-4-[（2，6-二异丙基苯基）亚氨基]-2-烯（NacNacH）的空间要求和螯合性能。含有乙烯脒作为大体积配体的金属碘衍生物可以被视为通过还原制备具有低价金属中心的配合物的有趣的前体，只要它们不含配位醚。由相应的乙烯脒锂配合物与MI_2（M = Mn，Zn，Cd）反应，以高产率得到乙烯脒配合物NacNacM（μ-I）_2Li（OEt_2）_2 [M = Mn（3），Zn（4），Cd（5）]。3、4和5的晶体结构分析表明它们是同构的。所有三种结构都具有船形构象的维那脒骨架，四面体配位的金属中心在船首，相对的碳原子在船尾。
We have focused on the synthesis of monomeric, functionalized starting materials containing manganese(II), zinc(II), and cadmium(II) by taking advantage of the sterically demanding and chelating property of the substituted vinamidine ligand 2-[(2,6-diisopropylphenyl)amino]-4-[(2,6-diisopropylphenyl)imino]pent-2-ene (NacNacH). Metal iodine derivatives containing vinamidines as the bulky ligand can be regarded as interesting precursors for preparing complexes with low-valent metal centers by reduction as long as they are free of coordinated ether. The vinamidine complexes NacNacM(μ-I)2Li(OEt2)2 [M = Mn (3), Zn (4), Cd (5)] are obtained from the corresponding vinamidine lithium complex and MI2 (M = Mn, Zn, Cd) in good yields. A crystal structure analysis of 3, 4, and 5 shows them to be isostructural. All three structures have the vinamidine backbone in a boat conformation with the tetrahedrally coordinated metal center at the prow and the opposing carbon atom at the stern.