Metal alkoxides: models for metal oxides. 7. Trinuclear and tetranuclear alkylidyne clusters of tungsten supported by alkoxide ligands

ABSTRACTHybrid materials based on polysiloxanes and metal oxides (SiO2, TiO2, ZrO2) were prepared by hydrosilation of allyl acetoacetate (AAA) modified metal alkoxides (M(OR)4; M = Ti, Zr; R = ethyl, isopropyl) or vinyl triethoxysilane with poly(dimethylsiloxane-co-hydrosiloxane) (PDMS-co-PMHS). The obtained compounds acted as single-source precursors in the sol-gel process. Various spectroscopic methods showed the complete functionalization of the polysiloxane chains with the complexes. When alcohols were used as solvents in the sol-gel process, hybrid nanoparticles were obtained, as observed by dynamic light scattering (DLS) measurements, transmission electron microscopy (TEM), and spectroscopic methods such as NMR and FT-IR.

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ChemInform Abstract: Metal Alkoxides - Metal Alkoxides - Models for Metal Oxides. Part 9. Hydridoditungsten Alkoxides: W2(H)(O-iPr)8Na·diglyme and W2(H)(I)(OCH2-tBu)6(H2NMe). Further Investigations of the Reaction Between W2(NMe2)6(M≡M) and iPrOH Leading

Chemischer Informationsdienst ◽

10.1002/chin.198620270 ◽

1986 ◽

Vol 17 (20) ◽

Author(s):

M. H. CHISHOLM ◽

J. C. HUFFMAN ◽

C. A. SMITH

Keyword(s):

Metal Oxides ◽

Metal Alkoxides

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Reaction of Metal Alkoxides with Lysine: Substitution of Alkoxide Ligands vs . Lactam Formation

Monatshefte für Chemie - Chemical Monthly ◽

10.1007/s00706-003-0032-2 ◽

2003 ◽

Vol 134 (8) ◽

pp. 1065-1069 ◽

Cited By ~ 5

Author(s):

Olga Metelkina ◽

Ulrich Schubert

Keyword(s):

Metal Alkoxides ◽

Alkoxide Ligands ◽

Lysine Substitution

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Metal alkoxides: models for metal oxides—XIII. NMR spectroscopic and theoretical investigations into the reduction of alkynes bonded to hexaalkoxides of dimolybdenum and ditungsten

Polyhedron ◽

10.1016/s0277-5387(00)86311-1 ◽

1988 ◽

Vol 7 (10-11) ◽

pp. 903-918 ◽

Cited By ~ 13

Author(s):

Malcolm H. Chisholm ◽

Brian K. Conroy ◽

David L. Clark ◽

John C. Huffman

Keyword(s):

Metal Oxides ◽

Metal Alkoxides ◽

Theoretical Investigations

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Metal alkoxides - models for metal oxides. 1. Preparations and structures of hexadecaalkoxytetratungsten compounds, W4(OR)16, where R = Me and Et, and octaoxotetraisopropoxytetrapyridinotetramolybdenum, Mo4(O)4(.mu.-O)2(.mu.3-O)2(O-i-Pr)2(.mu.-O-i-Pr)2(py)4

Journal of the American Chemical Society ◽

10.1021/ja00410a018 ◽

1981 ◽

Vol 103 (20) ◽

pp. 6093-6099 ◽

Cited By ~ 56

Author(s):

M. H. Chisholm ◽

J. C. Huffman ◽

C. C. Kirkpatrick ◽

J. Leonelli ◽

K. Folting

Keyword(s):

Metal Oxides ◽

Metal Alkoxides

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Metal alkoxides. Models for metal oxides. 15. Carbon-carbon and carbon hydrogen bond activation in the reactions between ethylene and ditungsten hexaalkoxides: W2(OCH2-t-Bu)6(.eta.2-C2H4)2, W2(OR)6(CH2)4(.eta.2-C2H4), and W2(OR)6(.mu.-CCH2CH2CH2) (where R = Ch2-t-Bu, i-Pr, c-C5H9, and c-C6H11). Preparations, properties, structures, and reaction mechanisms

Journal of the American Chemical Society ◽

10.1021/ja00196a039 ◽

1989 ◽

Vol 111 (14) ◽

pp. 5284-5299 ◽

Cited By ~ 21

Author(s):

Malcolm H. Chisholm ◽

John C. Huffman ◽

Mark J. Hampden-Smith

Keyword(s):

Hydrogen Bond ◽

Metal Oxides ◽

Reaction Mechanisms ◽

Bond Activation ◽

Metal Alkoxides ◽

Carbon Hydrogen Bond Activation

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