The Application of Magnesium(I) Compounds to Energy Storage Materials
Abstract
This is the final report of a project determine the extent to which the chemistry of Mg(I) can be extended and to determine the properties of products thus far created. Such species are very reactive, highly reducing and offer many potential applications. Accordingly, it was proposed to extend the prior and very successful AFOSR/AOARD funded study (FA869-08-1-4063) to a systematic exploration of the fundamental and applied chemistry of magnesium(I) and related, yet unknown, mixed valence magnesium clusters. Particular attention was to be paid to the use of such complexes in the preparation of energy storage materials. This project has been extremely successful and good progress has been made towards all of the originally stated goals. Briefly, (i) several new Beta-diketiminate and guanidinate coordinated magnesium(I) dimers have been prepared and fully characterized. The ligands in these systems are of varying steric bulk, thereby allowing for the facile tuning of the level of the reactivity of the dimers as reducing agents in further studies. (ii) A number of attempts have been made to prepare mixed valence magnesium(I) clusters, LnMgm (m > n), using both monodentate and bidentate ligands (L). (iii) The addition of dihydrogen to Mg dimers has been achieved in the presence of a transition metal(0) complex. (iv) The preparation of a range of magnesium aminoborane complexes, LMgNH2.BH3 have been prepared and shown to decompose to generate H2 at ca. 100 deg. C. (v) Magnesium(I) dimers have been demonstrated to be highly effective for the reductive coupling of alkyl azides to generate high N-content complexes which have potential as high energy materials. (vi) In a spin off study Mg dimers have been used as bespoke reagents to give high yields of SiI, GeI and SnI dimers, and the first example of a germanium(I) radical, all of which are proving extremely reactive towards small molecule activations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 18, 2011
- Accession Number
- ADA547657
Entities
People
- Cameron Jones
Organizations
- Monash University