Aluminum Dihydroxide with Terminal OH Groups: An Unprecedented Congener of Boronic Acid

Preparation and Structure of the First Germanium(II) Hydroxide: The Congener of an Unknown Low‐Valent Carbon Analogue

“…In the IR spectrum a sharp absorption around 3571 cm À1 can be attributed to the OÀH stretching frequency. Theoretical calculations on Ge(OH) 2 showed that two vibrational frequencies could be expected at 3675 and 3735 cm À1 . [12] These values are in good agreement with that of 3 when it is taken into account that some symmetry constraints are involved.…”

“…In recent years, we have been interested in organometallic hydroxides. We reported on the preparation and structural characterization of unusual compounds such as [LAl(OH) 2 ] [2] (L = HC{(CMe)(2,6-iPr 2 C 6 H 3 N)} 2 ), [(Me 3 Si) 3 CSnO(OH)] 3 , [3] and [(CpZr) 6 (m 4 -O)(m-O) 4 (m-OH) 8 ], [4] and a series of experiments concerning the so-called water effect in organometallic chemistry. [5] Interestingly, only a few examples of well-characterized germanium(iv) hydroxides are known: Ph 3 GeOH, (C 10 H 7 ) 3 GeOH, (C 6 H 11 ) 3 GeOH, [6] 2 tBu 2 Ge(OH) 2 ·(tBu 2 GeO-H) 2 O·H 2 O, [7] and [Fc(tBu)(OH)Ge] 2 O [Fc = CpFe(h 5 -C 5 H 4 )], [8] and no such compounds based on germanium(ii) have been reported.…”

Trapping and Reactivity of a Molecular Aluminium Oxide Ion

“…By employing sterically demanding ancillary ligands, however, a number of molecular complexes featuring bridging Al‐O‐Al motifs have been synthesised. Notable examples, shown in Figure , include { t Bu 2 Al(py)} 2 (μ‐O) ( I , py=pyridine), {(Nacnac)Al} 2 (MeAl)(μ‐O) 3 ( II , Nacnac=[(DippNCMe) 2 CH], Dipp=2,6‐diisopropylphenyl) and [(Mes*)Al(μ‐O)] 4 , ( III , Mes*=2,4,6‐ t Bu 3 C 6 H 2 ) . In addition, Roesky and co‐workers have reported that the mono‐alumoxine IV can be trapped by coordination of B(C 6 F 5 ) 3 to the aluminium‐bound oxygen atom …”

Efficient Route to Tetramethylalumoxane and Carboxylate Alumoxanes through the Alkylation of Phthalic Acid

“…[10] The first crystallographic evidence for organoaluminum carboxylate species was given by Atwood and co-workers with the structural determination of [MeCO 2 (AlMe 3 ) 2 ]…”