2,6-Di(4-t-butylphenyl)phenyl-group 13 organometallic compounds

Quillian, Brandon; Wang, Yu‐Zhong; Wei, Pingrong; Handy, Adele; Robinson, Gregory H.

doi:10.1016/j.jorganchem.2006.05.024

Cited by 13 publications

(15 citation statements)

References 35 publications

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“…The synthesis of 1 under slightly different conditions and its X-ray crystal structure have been reported independently. [18] Crystals of 1 obtained from toluene solution are essentially identical to those crystallized from Et 2 O solution described by Robinson et al after taking low-temperature effects in the present data set into consideration. [18] (1)…”

Section: Diterphenylgallium Compoundssupporting

confidence: 69%

“…Overall, the structure of 3 bears close resemblance to that of the indium analogue [{2,6-(4-tBuC 6 H 4 ) 2 C 6 H 3 } 3 In]. [18] Figure 1. Thermal ellipsoid plot (50 % probability ellipsoids) showing the molecular structure of 3.…”

Section: Triterphenylgalliummentioning

confidence: 81%

“…The Ga-C bond lengths [1.989(2)-2.010(2) Å] fall within the upper range observed previously for diterphenylgallanes. [18][19][20][21] The slightly elongated Ga(1)-C(16) bond [2.010(2) Å] and the corresponding widening of the C(38)-Ga(1)-C(68) angle to 122.57(10)°m ay be attributed to the steric demands of the m-terphenyl substituents. The substituents are arranged in the typical propeller fashion, [18,22,23] and the planes of the central arene rings are rotated out of the GaC 3 plane by 39°[C (38) ring], 47°[C (16) ring], and 64°[C(68) ring].…”

Section: Triterphenylgalliummentioning

confidence: 99%

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m‐Terphenylaluminum and ‐gallium Compounds: Synthesis and Conversion into Low‐Coordinate Organogallium Cations

et al. 2007

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The reaction of two or 3 equiv. of m‐terphenyllithium with MCl3 or AlH3·NMe3 (M = Al, Ga) affords the bis(terphenyl)aluminum and ‐gallium chloride compounds [{2,6‐(4‐tBuC6H4)2C6H3}2GaCl] (1), [{2,6‐(3,5‐Me2C6H3)2C6H3}2GaCl] (2), [{2,6‐(4‐tBuC6H4)2C6H3}3Ga] (3), [(2,6‐Mes2C6H3)2AlCl] (5), and [(2,6‐Mes2C6H3)2AlH] (7; Mes = 2,4,6‐Me3C6H2). While the gallium compounds can be obtained at room temperature, heating is required for the aluminum derivatives. The dibutyl compounds [(2,6‐Mes2C6H3)GaBu2] (8) and[(2,6‐Dipp2C6H3)GaBu2] (9; Dipp = 2,6‐iPr2C6H3) have also been synthesized by the reaction of m‐terphenyllithium with ClGaBu2. A metathesis reaction of 2 with Li[Al{OCH(CF3)2}4] gives the ionic species [(2,6‐Mes2C6H3)2Ga]+[Li{Al[OCH(CF3)2]4}2]– (11). The cationic butyl(terphenyl)gallium compounds [(2,6‐Mes2C6H3)GaBu]+ ([13]+) and [(2,6‐Dipp2C6H3)GaBu]+ ([14]+) have been prepared by butanide abstraction with the trityl salts of the weakly coordinating anions [B(C6F5)4]–, [CHB11Br6Me5]–, and [CHB11Cl11]–. These ionic species are stable at room temperature for days or weeks, although their combinations with the borate anion [B(C6F5)4]– suffer from C6F5 migration, which is slow at room temperature and faster at elevated temperatures. The compound [14]+[CHB11Cl11]– is stable at 70 °C for at least 23 h. Addition of 1‐octene to a solution of [14]+[CHB11Cl11]– in C6D6 results in olefin exchange and formation of the octyl species [(2,6‐Dipp2C6H3)Ga(octyl)]+ ([17]+), and a slow alkylation of the solvent to afford various octylbenzenes. Hydrolysis of 8 and [13]+[CHB11Br6Me5]– gives the compounds [{(2,6‐Mes2C6H3)GaBu(μ‐OH)}2] (10) and [(BuGa)4(μ‐OH)6]2+[CHB11Br6Me5]–2 (16). All compounds have been characterized by 1H and 13C{1H} NMR spectroscopy and mass spectrometry, and compounds 3, 5, 7, 10, and 16·4.5C6H6 have also been characterized by single‐crystal X‐ray crystallography. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)

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Section: Diterphenylgallium Compoundssupporting

confidence: 69%

Section: Triterphenylgalliummentioning

confidence: 81%

Section: Triterphenylgalliummentioning

confidence: 99%

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m‐Terphenylaluminum and ‐gallium Compounds: Synthesis and Conversion into Low‐Coordinate Organogallium Cations

et al. 2007

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“…2,6-(4-tBuC 6 H 4 ) 2 C 6 H 3 GaCl 2 ·(OEt 2 ) was prepared by a literature procedure. [12] [Cp 2 ZrCl 2 ] was purchased from Aldrich Chemical Co. and was used as received. Solvents were dried and distilled under argon from Na/benzophenone prior to use.…”

Section: Methodsmentioning

confidence: 99%

“…[11] Reduction of [Cp 2 ZrCl 2 ] with sodium in the presence of RGaCl 2 ·(OEt 2 ), [12] however, yielded compound 1 as air-and moisture-sensitive purple-black crystals. Compound 1 is stable for months under an argon atmosphere without significant decomposition and has high thermal stability (melting above 253 8C).…”

mentioning

confidence: 99%