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Discrete Magnesium Hydride Aggregates: A Cationic Mg13H18 Cluster Stabilized by NNNN-Type Macrocycles.
- Source :
- Angewandte Chemie International Edition; Mar2015, Vol. 54 Issue 13, p4115-4118, 4p
- Publication Year :
- 2015
-
Abstract
- Large magnesium hydride aggregates [Mg<subscript>13</subscript>(Me<subscript>3</subscript>TACD)<subscript>6</subscript>(μ<subscript>2</subscript>-H<subscript>12</subscript>)(μ<subscript>3</subscript>-H<subscript>6</subscript>)][A]<subscript>2</subscript> ((Me<subscript>3</subscript>TACD)H=1,4,7-trimethyl-1,4,7,10-tetraazacyclododecane; A=AlEt<subscript>4</subscript>, Al nBu<subscript>4</subscript>, B{3,5-(CF<subscript>3</subscript>)<subscript>2</subscript>C<subscript>6</subscript>H<subscript>3</subscript>}<subscript>4</subscript>) were synthesized stepwise from alkyl complexes [Mg<subscript>2</subscript>(Me<subscript>3</subscript>TACD)R<subscript>3</subscript>] (R=Et, nBu) and phenylsilane in the presence of additional Mg<superscript>II</superscript> ions. The central magnesium atom is octahedrally coordinated by six hydrides as in solid α-MgH<subscript>2</subscript> of the rutile type. Further coordination to six magnesium atoms leads to a substructure of seven edge-sharing octahedra as found in the hexagonal layer of brucite (Mg(OH)<subscript>2</subscript>). Upon protonolysis in the presence of 1,2-dimethoxyethane (DME), this cluster was degraded into a tetranuclear dication [Mg<subscript>2</subscript>(Me<subscript>3</subscript>TACD)(μ-H)<subscript>2</subscript>(DME)]<subscript>2</subscript>[A]<subscript>2</subscript>. [ABSTRACT FROM AUTHOR]
- Subjects :
- MAGNESIUM hydride
MACROCYCLIC compounds
MAGNESIUM group
HYDRIDES
CHEMICAL reactions
Subjects
Details
- Language :
- English
- ISSN :
- 14337851
- Volume :
- 54
- Issue :
- 13
- Database :
- Complementary Index
- Journal :
- Angewandte Chemie International Edition
- Publication Type :
- Academic Journal
- Accession number :
- 101588147
- Full Text :
- https://doi.org/10.1002/anie.201411612