934009-05-9

Basic information

• Product Name: HC[(CMe)(N-2,6-iPr₂C₆H₃)]2Al(OH)(OEt)
• CAS NO: 934009-05-9
• Molecular Weight: 506.708
• Mol File: 934009-05-9.mol

Chemical Properties

• CAS DataBase Reference: HC[(CMe)(N-2,6-iPr₂C₆H₃)]2Al(OH)(OEt)(CAS DataBase Reference)
• NIST Chemistry Reference: HC[(CMe)(N-2,6-iPr₂C₆H₃)]2Al(OH)(OEt)(934009-05-9)
• EPA Substance Registry System: HC[(CMe)(N-2,6-iPr₂C₆H₃)]2Al(OH)(OEt)(934009-05-9)

Safety Data

• Hazardous Substances Data: 934009-05-9(Hazardous Substances Data)

Upstream product

• 60-29-7 diethyl ether 
• 325465-25-6 (2,4-bis(2,6-diisopropylphenylimino)pentan-3-ide-.kappa2N,N')aluminum(I) 
• 10024-97-2 dinitrogen monoxide 
• 349545-04-6 Dipp₂nacnacAlCl₂ 
• 1010855-27-2 (((CH₃)2CH)2C₆H₃NC(CH₃)CHC(CH₃)NC₆H₃(CH(CH₃)2)2)AlCl(OC₂H₅) 
• 7732-18-5 water 
• 64-17-5 ethanol 
• 889111-73-3 HC[(CMe)(N(2,6-iPr₂C₆H₃))2 aluminium (C₃O(SiMe₃)2) 

Relevant articles and documents

Formation and Reactivity of Non-Stabilized Monomeric Alumoxane Intermediates

Several methods for the oxidation of the β-diketiminate AlI complexes (BDI)Al and (BDI*)Al with O2, Et3P=O or N2O are presented (BDI=HC[C(Me)N(DIPP)]2, DIPP=2,6-diisopropylphenyl; BDI=HC[C(tBu)N(DIPP)]2). The selectivity of alumoxane formation depends strongly on the nature of the β-diketiminate ligand, the experimental procedure and the solvent. The mononuclear alumoxanes (BDI)Al=O and (BDI*)Al=O are highly reactive intermediates that cannot be isolated but either aggregate to give less reactive dimers or decompose by internal C?H activation of a backbone Me group or an iPr group. Ethereal solvents like Et2O react with alumoxanes to give (BDI)Al(OEt)OH and ethylene by β-H elimination. In case of N2O oxidation, subsequent reaction with a second equivalent of N2O to form the hyponitrite complexes (BDI)Al(N2O2) and (BDI*)Al(N2O2) is observed. Details of the alumoxane formation, reactivity and decomposition have been obtained by DFT calculations. These calculations also underscore their rather bipolar character, represented by the resonance structure (BDI)Al+?O?, and estimate the σ- and π-bond character of the Al=O bond at circa 76 % and 24 %, respectively.

Organoaluminum hydroxides supported by β-diketiminato ligands: Synthesis, structural characterization, and reactions

Three β-diketiminato ligands (L1 = HC[C(Me)N(Ar)] 2, Ar = 2,4,6-Me3C6H2; L2 = HC[C(Me)N(Ar)]2, Ar = 2,6-iPr2C6H 3; L3 = HC[C(tBu)N(Ar)]2, Ar = 2,6iPr 2C6H3) were employed to prepare the organoaluminum hydroxides LAlR(OH) (R = Me, Et, Ph, OEt, OSiMe3) by hydrolysis of the corresponding chlorides in the presence of a N-heterocyclic carbene as HCl scavenger. Reaction of the organoaluminum hydroxide with Cp 2ZrMe2 in toluene afforded the heterobimetallic oxide LAlR(μ-O)ZrMeCp2 under evolution of methane. All compounds were characterized by multinuclear NMR, IR, mass spectrometry, and elemental analysis. The structures of L1AlPh(OH) (10), L2AlPh(OH) (11), L2AlOEt(OH) (12), L2AlOSiMe3(OH) (13), and L2AlPh(μ-O)ZrMeCp2 (17) were determined by single-crystal X-ray diffraction studies. The polymerization of ethylene was studied with compound 17, which exhibits moderate catalytic activity.

A cyclopropenylaluminum derivative from hydrolysis and alcoholysis of an aluminacyclobutenone

Hydrolysis and alcoholysis of the cyclic aluminum acyl LAl[C(O)C(SiMe 3)C(SiMe3)] (1; L = HC[(CMe)(NAr)]2, Ar = 2,6-iPr2C6H3) resulted in the formation of the cyclopropenylaluminum derivative LAl{[C3(SiMe3) 2]C(O)C(SiMe3)C-(SiMe3)} (2) with the elimination of aluminum hydroxides LAIOH(OR) (R = H, Et, tBu).