Aluminium alkoxides, β-diketonates and carboxylates

Mehrotra, R. C.; Rai, A.K.

doi:10.1016/s0277-5387(00)86025-8

Cited by 51 publications

(22 citation statements)

References 144 publications

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“…FAB analysis requires that the samples be dispersed on a matrix. 26 However, low-intensity (approx. TEA, glycerol and p-nitrobenzyl alcohol (NBA), interact with the precursors, as was found for the spinel and potassium aluminosilicate precursors.…”

Section: Mass Spectroscopymentioning

confidence: 99%

Synthesis and characterization of precursors for group II metal aluminates

Narayanan

Laine

1997

Appl. Organometal. Chem.

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Precursors to Group II metal aluminates (MAI2O4, M=Mg, Ca, Ba, Sr) are synthesized from inexpensive starting materials including Group II metal oxides/hydroxides, Al(OH)3, triethanolamine (TEA) and ethylene glycol, in a one‐pot synthesis process. The precursors are soluble in common organic solvents and can be handled in moist air for a reasonable period of time. On pyrolysis in air to 1200 °C, all three precursors transform to the corresponding Group II metal aluminates. A termetallic double alkoxide, ‘ionomer‐like’ structure is proposed, wherein the alkaline‐earth metal is encapsulated by a TEA molecule bridging two alumatrane units. The precursors were characterized using TGA, NMR, mass spectroscopy and elemental analyses, and the pyrolysed precursors were briefly characterized using x‐ray diffraction analysis. © 1997 John Wiley & Sons, Ltd.

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Section: Mass Spectroscopymentioning

confidence: 99%

Synthesis and characterization of precursors for group II metal aluminates

Narayanan

Laine

1997

Appl. Organometal. Chem.

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“…Nevertheless, attempts to crystallize or purify aluminum phenoxide have not been successful, as it decomposes upon heating during distillation or sublimation [35]. However, the presence of tri-and tetranuclear aggregates in the solid state could be elucidated by 27 Al MAS NMR [36].…”

Section: Introductionmentioning

confidence: 99%

Structural and spectroscopic characterizations of aluminum phenoxide

Mohammadnezhad

Amini

Khavasi

et al. 2016

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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A synthetic route to obtain crystalline aluminum phenoxide was established. Its molecular structure in solid-state and solution is unambiguously determined by single-crystal X-ray diffraction and (1)H, (13)C and (27)Al NMR spectroscopy. The single-crystal X-ray analysis revealed the presence of the dimeric THF adduct [Al(OPh)3·THF]2 with a disordered trigonal bipyramidal geometry at the aluminum atom which is bonded to a THF ligand, two terminal and two bridging phenoxy groups (OPh). The solution behavior of the title compound was investigated by (27)Al NMR in non-coordinating (CDCl3) as well as coordinating (THF) solvents at different temperatures. The obtained results indicate the presence of four- and five-coordinate species in solution.

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“…Aluminum(III) isopropoxide shows varying degrees of molecular association, initially dimeric vapors distill to a liquid, a trimeric species [Al(OPr i ) 3 ] 3 , which crystallizes into a stable tetrameric form [Al(OPr i ) 3 ] 4 . The difference in behavior was suggested by the concept of aging phenomenon (Mehrotra and Rai, 1991). The tetrameric structure was confirmed based on 1 H and 27 Al nuclear magnetic resonance (NMR) spectral studies (Mehrotra and Rai, 1991) as well as by a single crystal X-ray diffraction study (Turova et al, 1978;Folting et al, 1991).…”

Section: Introductionmentioning

confidence: 94%

“…The difference in behavior was suggested by the concept of aging phenomenon (Mehrotra and Rai, 1991). The tetrameric structure was confirmed based on 1 H and 27 Al nuclear magnetic resonance (NMR) spectral studies (Mehrotra and Rai, 1991) as well as by a single crystal X-ray diffraction study (Turova et al, 1978;Folting et al, 1991). The 27 Al NMR spectrum of [Al(OPr i ) 3 ] 4 in toluene exhibits two signals at δ 1.72 and 65 ppm, indicating the presence of six-and fourcoordinated aluminum(III) atoms.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and structural characterization of some binuclear acetylacetone and Schiff’s base complexes containing aluminum(III) atoms in different coordination states

Sharma

Sanwaria

Nagar

et al. 2013

Main Group Metal Chemistry

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Some Schiff ' s base complexes of aluminum(III) of the type (CH 3 COCHCOCH 3 ) 2 Al( μ -OPr i ) 2 AlL n (OPr i ) 2-n [where LH=OHC(R)=CHC(R ′ )=NC 6 H 5 ; R=R ′ =CH 3 ,C 6 H 5 ; R=CH 3 , R ′ =C 6 H 5 ; LH=C 6 H 4 (OH)CH=NC 6 H 5 and n = 1 or 2] were prepared and characterized by various spectroscopic techniques. The molecular weight measurements indicated their binuclear nature. The 27 Al nuclear magnetic resonance spectra of representative compounds [(CH 3 COCHCOCH 3 ) 2 Al( μ -OPr i ) 2 Al { OC(C 6 H 5 )=CH C(C 6 H 5 )=NC 6 H 5 } (OPri)] [3] and [(CH 3 COCHCOCH 3 ) 2 Al( μ -OPr i ) 2 Al { OC(CH 3 )=CH C(CH 3 )=NC 6 H 5 } 2 ] [6] suggest the presence of aluminum(III) atoms in different coordination states.

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Aluminium alkoxides, β-diketonates and carboxylates

Cited by 51 publications

References 144 publications

Synthesis and characterization of precursors for group II metal aluminates

Synthesis and characterization of precursors for group II metal aluminates

Structural and spectroscopic characterizations of aluminum phenoxide

Synthesis and structural characterization of some binuclear acetylacetone and Schiff’s base complexes containing aluminum(III) atoms in different coordination states

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