Chirale Gallium- und Indium-Alkoxometallate

Pauls, Jochen; Chitsaz, Soheila; Neumüller, Bernhard

doi:10.1002/1521-3749(200009)626:9<2028::aid-zaac2028>3.0.co;2-9

Cited by 21 publications

(27 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…PhCH 2 OH, t BuOH und LiAlH 4 -Lo È sungen wurden von den Firmen Merck und Aldrich bezogen. Al(OCH 2 Ph) 3 und Al(O c Hex) 3 wurden nach Literaturvorschrift hergestellt [1,10]. (1) …”

Section: Experimenteller Teilunclassified

“…Gruppe vorstellen [1±7], wobei sowohl achirale organische Reste wie t Bu, c Hex oder CH 2 Ph als auch der chirale BINOL-Ligand zum Einsatz kamen [3,7]. Dabei konnten wir fu È r die homoleptische Neutralspezies Al(O c Hex) 3 zum ersten Mal die Existenz des fu È r Aluminiumalkoxide schon fru È her vermuteten trimeren Charakters strukturell untermauern [1].…”

Section: Introductionunclassified

“…Der Abstand Cs2±O6 ist damit deutlich ku È rzer als die 325(2) pm im [Cs(THF) 0,5 (Me 2 GaF 2 )] [22], obwohl auch dort das Cs + -Ion KZ sechs aufweist. Jedoch sind dafu È r in der stark verzerrt oktaedrischen Koordinationsspha È re zwei Cs±F-Kontakte mit 290,4(4) und 291,6(5) pm wesentlich ku È rzer als die Cs±O-Absta È nde in [3] n .…”

Section: Introductionunclassified

“…Auswirkungen auf die vier Al±O-Bindungen in [3] n werden dabei im Rahmen der Standardabweichungen nicht registriert; der Mittelwert betra È gt 174 pm. Die alternierende Anordnung von koordinierten Cs + -und Al 3+ -Ionen fu È hrt zu einer 1 d-Kettenbildung entlang [001] (Abb.…”

Section: Introductionunclassified

“…3 Moleku È lstruktur von 2 (ohne H-Atome, Schwingungsellipsoide 40% Wahrscheinlichkeit; von den Fehlordnungspositionen der t Bu-Gruppen wurde jeweils nur eine abgebildet).Abb. 4 Auschnitt aus der Kette des Koordinationspolymers[3] n (ohne H-Atome, Schwingungsellipsoide 50% Wahrscheinlichkeit; die organischen Liganden wurden zur besseren Ûbersicht nur als du È nne Striche gezeichnet).…”

unclassified

See 4 more Smart Citations

Lithium- und Caesium-Alkoxometallate

Pauls

Neumüller

2001

Z. anorg. allg. Chem.

Self Cite

View full text Add to dashboard Cite

Professor Hans Georg von Schnering zum 70. Geburtstag gewidmet Inhaltsu È bersicht. Das Aluminiumalkoxid, Al(OCH 2 Ph) 3 (1), kann in einer Direktsynthese aus Al und PhCH 2 OH unter HgCl 2 -Katalyse dargestellt werden. Die Bildung des Metallats [{(Diglyme)Li}{Al(O t Bu) 4 }] (2) unter Wasserstoff-Entwicklung erfolgt durch Reaktion von LiAlH 4 mit t BuOH in THF und anschlieûender Nachbehandlung mit zusa È tzlichem t BuOH in Diglyme unter Ru È ckfluûbedingungen. Ein nukleophiler Angriff von F ± -Ionen fu È hrt nach Zusatz von CsF zu THF-Lo È sungen von Al(O c Hex) 3 unter Ligandenredistribution zum Koordinationspolymer [{Cs(THF) 2 }{Cs(THF)}-{Al(O c Hex) 4 } 2 ] n ([3] n ). 1, 2 und 3 wurden mittels NMR-, IRund MS-Techniken sowie Ro È ntgenstrukturanalysen untersucht. Danach liegt 1 als Tetramer in Lo È sung und Festko È rper vor. Das zentrale Strukturmotiv des Metallats 2 ist ein planarer, heteronuklearer LiO 2 Al-Vierring mit fu È nffach-koordiniertem Li + -Ion. Im kettenfo È rmigen Koordinationspolymer [3] n wechseln sich Cs + -Ionen mit Koordinationszahl 5 und 6 ab. Lithium and Cesium AlkoxometalatesAbstract. The aluminium alkoxide, Al(OCH 2 Ph) 3 (1), can be obtained from a direct synthesis of Al and PhCH 2 OH under HgCl 2 catalysis. The formation of the metalate [{(Diglyme)-Li}{Al(O t Bu) 4 }] (2) from LiAlH 4 and t BuOH in THF under evolution of hydrogen takes place, if the reaction product is heated under reflux with additional t BuOH in diglyme. The nucleophilic attack of F ± ions leads during the treatment of CsF on a THF solution of Al(O c Hex) 3 after ligand redistribution to the coordination polymer [{Cs(THF) 2 }{Cs(THF)}-{Al(O c Hex) 4 } 2 ] n ([3] n ). 1, 2, and 3 were characterized by NMR, IR and MS techniques as well as by crystal structure analyses. According to them 1 is present as tetramer in solution and the solid state. The central structural motif of the metalate 2 is a heteronuclear and planar LiO 2 Al four-membered ring with a penta-coordinated Li + ion. In the chainlike coordination polymer [3] n Cs + ions with coordination number five and six occupy alternating positions.

show abstract

“…PhCH 2 OH, t BuOH und LiAlH 4 -Lo È sungen wurden von den Firmen Merck und Aldrich bezogen. Al(OCH 2 Ph) 3 und Al(O c Hex) 3 wurden nach Literaturvorschrift hergestellt [1,10]. (1) …”

Section: Experimenteller Teilunclassified

Section: Introductionunclassified

unclassified

See 3 more Smart Citations

Lithium- und Caesium-Alkoxometallate

Pauls

Neumüller

2001

Z. anorg. allg. Chem.

Self Cite

View full text Add to dashboard Cite

show abstract

Indium: Inorganic ChemistryBased in part on the article Indium: Inorganic Chemistry by Dennis G. Tuck which appeared in the Encyclopedia of Inorganic Chemistry, First Edition .

Zhao

Zhang

2005

Encyclopedia of Inorganic Chemistry

View full text Add to dashboard Cite

This review highlights the development in inorganic chemistry of indium made in the last ten years. The first parts of this article describe the preparation of new low‐valence indium complexes and organoindium (III) compounds, and the use of these compounds as starting materials for further synthesis. A special highlight is the compounds R 4 In 4 and R 4 In 2 , which show the lively development and the current trends in this field. The following parts present the development of organoindium compounds with group 15 or 16 ligands as single‐source molecular precursors for the deposition of indium‐containing semiconductors by MOCVD; the preparation and characterization of nanoparticles, nanowires, and nanotubes of indium metal, alloys, oxides, and indium‐V/VI semiconductors, which play a sizable role in the new generation of nanoscale electronic and optical devices; and the preparation of new indium intermetallic compounds, which present large structural variety and peculiar magnetic and electrical properties. The last part advances the applications of indium and indium halides in organic synthesis with particular reference to regio‐, stereo‐, and chemoselectivity. These reactions include the regioselective allylation of unsaturated functional groups, the acylation of alcohols and amines, the rearrangement of epoxides, the stereoselective debromination, and other reactions.

show abstract

Phosphaniminate von Alkalimetallen: Die Kristallstrukturen von [KNPCy3]4, [KNPCy3]4·2OPCy3, [CsNPCy3]4·4OPCy3 und [Li4(NPPh3)(OSiMe2NPPh3)3(DME)]

Gröb

Chitsaz

Harms

et al. 2002

Z. anorg. allg. Chem.

Self Cite

View full text Add to dashboard Cite

The alkalimetal phosphoraneiminates [KNPCy3]4, (1) [KNPCy3]4·2OPCy3 (2) and [CsNPCy3]4·4OPCy3 (3) (Cy = cyclohexyl) which are obtainable by the reaction of pottassium amide or cesium amide with Cy3PI2 or Cy3PBr2 in liquid ammonia, as well as the lithium derivative [Li4(NPPh3)(OSiMe2NPPh3)3(DME)] (4) have been characterized by crystal structure determinations. 4 has been formed by the insertion reaction of silicon greaze (‐OSiMe2)n into the LiN bonds of [LiNPPh3]6 in DME solution (DME = 1, 2‐dimethoxyethane). 1: Space group P&1macr;, Z = 2, lattice dimensions at 193 K: a = 1389.8(1); b = 1408.1(1); c = 2205.2(2) pm; α = 78.952(10)?; β = 81.215(10)?; γ = 66.232(8)?; R1 = 0.0418. 2: Space group Pbcn, Z = 4, lattice constants at 193 K: a = 2943.6(2); b = 2048.2(1); c = 1893.8(1) pm; R1 = 0.0428. 3: Space group Cmc21, Z = 4, lattice dimensions at 193 K: a = 2881.6(2); b = 2990.2(2); c = 1883.7(2) pm; R1 = 0.0586. 4·1/2DME: Space group R&3macr;c, Z = 12, lattice dimensions at 193 K: a = b = 1583.5(1); c = 11755.3(5) pm; R1 = 0.0495. All complexes have heterocubane structures. In 1‐3 they are formed by four alkali metal atoms and by the nitrogen atoms of the (μ3‐NPCy3‐) groups, whereas 4 forms a "heteroleptic" Li4NO3 heterocubane.

show abstract

Chirale Gallium- und Indium-Alkoxometallate

Cited by 21 publications

References 3 publications

Lithium- und Caesium-Alkoxometallate

Lithium- und Caesium-Alkoxometallate

Indium: Inorganic ChemistryBased in part on the article Indium: Inorganic Chemistry by Dennis G. Tuck which appeared in the Encyclopedia of Inorganic Chemistry, First Edition .

Phosphaniminate von Alkalimetallen: Die Kristallstrukturen von [KNPCy3]4, [KNPCy3]4·2OPCy3, [CsNPCy3]4·4OPCy3 und [Li4(NPPh3)(OSiMe2NPPh3)3(DME)]

Contact Info

Product

Resources

About