TY - JOUR
T1 - Heavy alkali metal amides
T2 - Role of secondary interactions in metal stabilization
AU - Torvisco, Ana
AU - Decker, Katharina
AU - Uhlig, Frank
AU - Ruhlandt-Senge, Karin
PY - 2009
Y1 - 2009
N2 - The coordination chemistry of the bis(diphenylmethylsilyl)amine ligand, HN(SiMePh2)2, with the heavy alkali metals potassium and rubidium has been investigated to study its effect on the structure of the resulting compounds. The compounds exhibit extensive intra- and intermolecular M-π interactions, creating 1-D coordination polymers, [K{N(SiMePh 2)2}]∞ (1) and [Rb{N(SiMePh2) 2}]∞ (3). This motif is maintained in the presence of tetrahydrofuran (THF), as seen in [K{N(SiMePh2)2}thf] ∞ (2). In contrast, use of the tridentate PMDTA allows isolation of a monomeric species, K(pmdta)N(SiMePh2)2 (4), which exhibits both agostic and M-π interactions. The incorporation of macrocyclic 18-crown-6, results in the formation of a rare non-metal bound amido species, {[K(18-crown-6)N(SiMePh2)2]}∞ (5), stabilized by M-π interactions from adjacent [N(SiMePh2)2] - ligands propagating 1-D coordination polymers.
AB - The coordination chemistry of the bis(diphenylmethylsilyl)amine ligand, HN(SiMePh2)2, with the heavy alkali metals potassium and rubidium has been investigated to study its effect on the structure of the resulting compounds. The compounds exhibit extensive intra- and intermolecular M-π interactions, creating 1-D coordination polymers, [K{N(SiMePh 2)2}]∞ (1) and [Rb{N(SiMePh2) 2}]∞ (3). This motif is maintained in the presence of tetrahydrofuran (THF), as seen in [K{N(SiMePh2)2}thf] ∞ (2). In contrast, use of the tridentate PMDTA allows isolation of a monomeric species, K(pmdta)N(SiMePh2)2 (4), which exhibits both agostic and M-π interactions. The incorporation of macrocyclic 18-crown-6, results in the formation of a rare non-metal bound amido species, {[K(18-crown-6)N(SiMePh2)2]}∞ (5), stabilized by M-π interactions from adjacent [N(SiMePh2)2] - ligands propagating 1-D coordination polymers.
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U2 - 10.1021/ic901767c
DO - 10.1021/ic901767c
M3 - Article
C2 - 19902915
AN - SCOPUS:72949096607
SN - 0020-1669
VL - 48
SP - 11459
EP - 11465
JO - Inorganic Chemistry
JF - Inorganic Chemistry
IS - 23
ER -