Abstract
The title compound crystallises as a hexane hemisolvate from 1 : 1 : 1 or 2: 1 :2 reaction mixtures of the lithium primary amide (BuN)-N-t(H)Li, potassium t-butoxide (BuOK)-O-t, and the diamine TMEDA in hexane solution. An X-ray crystallographic study reveals that it exists as a discrete cage species with a central oxo (O2-) anion, coordinated to the eight cations of a surrounding 16-vertex (Li8O8) polyhedron, two opposing sides of which are each bridged by a TMEDA-chelated K+ cation. Made up of mu(3)O-Li-3 and mu(2)O-Li-2 interactions, the Li8O8 polyhedron can be regarded in common terminology for alkali metal based structures, as an incomplete stack arrangement of two tetrameric (Li-O)(4) cyclic rings. The eight Li+ cations form a distorted dodecahedron and the eight alkoxide O atoms form a distorted square antiprism. (C) 1998 Elsevier Science Ltd. All rights reserved.
| Language | English |
|---|---|
| Pages | 993-998 |
| Number of pages | 6 |
| Journal | Polyhedron |
| Volume | 17 |
| Issue number | 5-6 |
| DOIs | |
| Publication status | Published - 1998 |
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Keywords
- alkali metals
- alkoxide
- cage complex
- crystal structure
- oxide
- barium
Cite this
}
Synthesis and structure of the novel octalithium-dipotassium mixed oxide-alkoxide cage complex [Li8K2(O)((BuO)-O-t)(8)center dot 2TMEDA]. / Mackenzie, F M ; Mulvey, Robert; Clegg, W ; Horsburgh, L .
In: Polyhedron, Vol. 17, No. 5-6, 1998, p. 993-998.Research output: Contribution to journal › Article
TY - JOUR
T1 - Synthesis and structure of the novel octalithium-dipotassium mixed oxide-alkoxide cage complex [Li8K2(O)((BuO)-O-t)(8)center dot 2TMEDA]
AU - Mackenzie, F M
AU - Mulvey, Robert
AU - Clegg, W
AU - Horsburgh, L
PY - 1998
Y1 - 1998
N2 - The title compound crystallises as a hexane hemisolvate from 1 : 1 : 1 or 2: 1 :2 reaction mixtures of the lithium primary amide (BuN)-N-t(H)Li, potassium t-butoxide (BuOK)-O-t, and the diamine TMEDA in hexane solution. An X-ray crystallographic study reveals that it exists as a discrete cage species with a central oxo (O2-) anion, coordinated to the eight cations of a surrounding 16-vertex (Li8O8) polyhedron, two opposing sides of which are each bridged by a TMEDA-chelated K+ cation. Made up of mu(3)O-Li-3 and mu(2)O-Li-2 interactions, the Li8O8 polyhedron can be regarded in common terminology for alkali metal based structures, as an incomplete stack arrangement of two tetrameric (Li-O)(4) cyclic rings. The eight Li+ cations form a distorted dodecahedron and the eight alkoxide O atoms form a distorted square antiprism. (C) 1998 Elsevier Science Ltd. All rights reserved.
AB - The title compound crystallises as a hexane hemisolvate from 1 : 1 : 1 or 2: 1 :2 reaction mixtures of the lithium primary amide (BuN)-N-t(H)Li, potassium t-butoxide (BuOK)-O-t, and the diamine TMEDA in hexane solution. An X-ray crystallographic study reveals that it exists as a discrete cage species with a central oxo (O2-) anion, coordinated to the eight cations of a surrounding 16-vertex (Li8O8) polyhedron, two opposing sides of which are each bridged by a TMEDA-chelated K+ cation. Made up of mu(3)O-Li-3 and mu(2)O-Li-2 interactions, the Li8O8 polyhedron can be regarded in common terminology for alkali metal based structures, as an incomplete stack arrangement of two tetrameric (Li-O)(4) cyclic rings. The eight Li+ cations form a distorted dodecahedron and the eight alkoxide O atoms form a distorted square antiprism. (C) 1998 Elsevier Science Ltd. All rights reserved.
KW - alkali metals
KW - alkoxide
KW - cage complex
KW - crystal structure
KW - oxide
KW - barium
U2 - 10.1016/S0277-5387(97)00223-4
DO - 10.1016/S0277-5387(97)00223-4
M3 - Article
VL - 17
SP - 993
EP - 998
JO - Polyhedron
T2 - Polyhedron
JF - Polyhedron
SN - 0277-5387
IS - 5-6
ER -