From the Lithium‐2‐anilide‐2‐fluoro‐1,3‐diaza‐2‐sila‐cyclopentene‐GaCl₃ Adduct to 1,4,6‐Triaza‐5‐gallium‐7‐sila‐cyclo‐3‐heptene ‐ Experimental and Quantum‐chemical Results 

Abstract

From the Lithium-2-anilide-2-fluoro-1,3-diaza-2-sila-cyclopentene-GaCl3-adduct to 1,4,6-Triaza-5-gallium-7-sila-cyclo-3-heptene-Experimental and Quantum-chemical Results. Journal of Inorganic and General Chemistry / Zeitschrift für anorganische und allgemeine Chemie, Wiley-VCH Verlag, 2010, 636 (8), pp.1527. 10.1002 From the Lithium-2-anilide-2-fluoro-1,3-diaza-2-silacyclopentene-GaCl3-adduct to 1,4,6-Triaza-5-gallium-7-silacyclo-3-heptene-Experimental and Quantum-chemical Results The addition is accompanied by an enamine-imine-tautomerism and proves the Lewis acid character of the silicon atom in an unknown 3-center-2-electron interaction of one nitrogen atom with the silicon and gallium atoms. Quantum chemical calculations of the thermal isomerisation process and crystal structures of 1 and 2 are reported.

Unprecedented gallium–nitrogen anions: synthesis and characterization of [(Cl3Ga)3N]3− and [(Cl3Ga)2NSnMe3]2−

“…15 The mean Ga-N bond length of 1.878(1) Å in 1 is expectedly shorter than the 1.950 (7) Å found in the parent molecule Cl 3 GaÁN(SnMe 3 ) 3 , 8 and it is comparable to those found in the base stabilized complex (quinuclidine)Cl 2 Ga-[N(SiMe 3 ) 2 ] (Ga-N = 1.866(2) Å), 16 and in [(Cl 3 Ga)NC 6 H 3 (2,6-CHMe 2 ) 2 (HC-NCMe 3 ) 2 SiF] 1À (Ga-N = 1.868(2) Å). 17 The compound Ar 0 Ga = NAr 00 (Ar 0 = C 6 H 3 -2,6-Dipp 2 ; Dipp = C 6 H 3 -2,6-Pr i 2 ; Ar 00 = C 6 H 3 -2,6(Xyl-4-Bu t ) 2 ), in which both Ga and N have a coordination number of 2, has a Ga-N bond length of 1.701(3) Å, significantly shorter that found in 1. 18 Neutral molecules such as [(MeGa) 4 (Me 2 Ga) 4 (HN-NMe) 4 (N 2 )] contain a Ga 3 N-NGa 3 fragment, 19 8) Å.…”