Trinuclear magnesium complexes stabilized by aminoalkoxide ligands. Issue 17 (1st September 2016)

• Record Type: Journal Article
• Authors: Kim, Hyo-Suk; George, Sheby Mary; Jung, Eun Ae; Han, Jeong Hwan; Park, Bo Keun; Son, Seung Uk; Kim, Chang Gyoun; Chung, Taek-Mo
• Is Part Of: Journal of coordination chemistry. Volume 69:Issue 17(2016)
• Page Start: 2591
• Page End: 2597
• Publication Date: 2016-09-01
• Subjects: Magnesium complexes -- grignard reagent -- aminoalkoxide -- trinuclear -- crystal structure; Coordination compounds -- Periodicals; 541.2242
• DOI: 10.1080/00958972.2016.1213389
• Languages: English
• ISSNs: 0095-8972

Abstract

Abstract: New magnesium complexes, [Et2 Mg3 (dmamp)4 ] (1 ) and [(CH2 =CH)2 Mg3 (dmamp)4 ] (2 ), were prepared by the reaction of alkylmagnesium bromide with sodium 1-dimethylamino-2-methyl-2-propoxide [Na(dmamp)] in THF. Complexes1 and2 were characterized by 1 H and 13 C NMR spectroscopies, FTIR spectroscopy, elemental analysis, and single-crystal X-ray diffraction (XRD) analysis. The XRD analysis showed that these complexes are trinuclear where the alkoxy O is the μ2 -O bridge between the Mg ions. Among the three metal centers, the two terminal Mg ions are five coordinate and have a square–pyramidal geometry, whereas the central Mg is four coordinate with a distorted tetrahedral geometry. The combination of ethyl and vinyl groups with sterically bulky aminoalkoxide ligands plays an important role in stabilizing the molecule. Abstract :