X-ray structural characterization of some sterically bulky N-donor and N-alkyl Grignard reagents
X-ray structural characterization of some sterically bulky N-donor and N-alkyl Grignard reagents
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DOI:
10.1016/j.ica.2005.08.009
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发表时间:
2006-01-01
影响因子:
2.8
通讯作者:
Kloth, M
中科院分区:
文献类型:
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作者:
Andrews, PC;Brym, M;Kloth, M
[MgBr2(thf)(3)] (1) and [FisoMg(thf)Cl](2) (2), (Fiso- = [ArNC(H)NAr](-), Ar = C6H3Pr'-2,6). 2, [2-PyC(SiMe3)(2)Mg(thf)Cl](2) (3), [2-PyC(SiMe3)(2)Mg(thf)Br](2) (4), and [(2-PyC(SiMe3)(2)Mg(thf))(2)(OEt)Cl] center dot Et2O (5). (2-Py(SiMC3)(2) CH = 2-f bis-(trimethylsilyl)methyl)2-pyridine) were isolated as by-products from reactions involving organometallic species and magnesium or diethylmagnesium. All compounds were characterized by single crystal X-ray crystallography. Compounds (1) and (5) have trigonal bipyramidal magnesium centres, while compounds (2)44) have square pyramidal structures. Compound (1) is monomeric, while compounds (2)-(5) are dinuclear with magnesium centres bridged by two halides for (2)-(4), and a chloride and an ethoxy ligand in (5). (c) 2005 Elsevier B.V. All rights reserved.