Rational construction of mixed-metal alkoxides

Abstract

The acidic protons in Zr2(0R)8(ROH)2, R = Pri, serve as a controlled functionality and react with Ba metal and with LiNMe2 to give the hydrocarbon-soluble heterometallic alkoxides Ba22r4(0R)20 and LiZr2(OR),(ROH) which have been characterized in solution by NMR spectroscopy and in the solid state by X-ray diffraction: Zr2(OR), units bind the Li+ and Ba2+ via bridging alkoxides and, for Li+, a terminal alcohol ligand which hydrogen bonds to a terminal alkoxide on zirconium.

Structural and Spectroscopic Characterization of a Mononuclear Hydroperoxo-Copper(II) Complex with Tripodal Pyridylamine Ligands

“…The three pyridine nitrogen atoms are in the equatorial plane (Cu ± N(2A) 2.099(5), Cu ± N(2B) 2.136(4), Cu ± N(2C) 2.051(6) ), and one of the axial positions is occupied by a nitrogen atom (6) is in good agreement with that of H 2 O 2 (1.490 ), [7] and the O(1P)-O(2P)-H(1P) valence bond angle of 101.88 is similar to that in H 2 O 2 (96 ± 1028). [9] As previously demonstrated in Cu II ± tppa (tppa tris(6-pivalamide-2-pyridylmethyl)amine) complexes with small molecules such as OH À ([Cu II (tppa)(OH À )] ) [10] and N…”

Synthese von Erdalkalimetallocenen aus Erdalkalimetall- bis[bis(trimethylsilyl)amid] und 6-Methyl-6-phenylfulven / Synthese von Erdalkalimetallocenen aus Erdalkalimetallbis[ bis(trimethylsilyl)amid] und 6-Methyl-6-phenylfulven Synthesis of Alkaline Earth Metallocenes from Alkaline Earth Metal Bis[bis(trimethylsilyl)amide] and 6 -Methyl-6 -phenylfulvene

“…Die Lösungsmittel wurden nach üblichen Verfahren getrocknet und unter Argon de stilliert, deuterierte Solventien entgast und mit Ar gon gesättigt. Die Synthese von Bis(tetrahydrofuran-0)calcium - [10,11] und Bis(tetrahydrofuran)bariumbis[bis(trimethylsilyl)amid] [9], Bis[bis(trimethylsilyl)-amino]stannylen [13] und 6-Methyl-6-phenylfulven [14] erfolgte entsprechend den Literaturvorschriften. Bei der Interpretation des an einer Nujolverreibung zwischen CsBr-Scheiben an dem IR-Spektrophotometer Paragon 1000PC der Firma Perkin-Elmer angefertigten Schwin gungsspektrums blieben die von Nujol überlagerten Ban den unberücksichtigt (Abschätzung der Intensität: vs sehr stark, s stark, m mittelstark, w schwach, sh Schulter, br breit).…”

Synthesis, Characterization, and Structure Determination of a New Heterometallic Oxoalkoxide: Er2Ti4O2(OC2H5)18(HOC2H5)2

“…This fragment is also observed in other M>-containing alkoxides. e.g., Zr (16), Ce (17), and U (18).…”