Metal Alkoxides and Dialkylamides

Bradley, D. C.

doi:10.1016/s0065-2792(08)60018-7

Cited by 119 publications

(24 citation statements)

References 173 publications

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“…Main group metal centered molecules with organonitrogen or oxygen ligands have been known since the last century, their importance as reagents in molecular reactions being noticed especially by Bradley, Mehrotra [1][2][3] and Lappert [4,5]. Since these early reviews, most new compilations have appeared with emphasis on the special uses of these two classes of compounds [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Metal centered molecules and their application in chemistry and physics

Veith¹,

Rammo²,

Faber³

et al. 1999

Pure and Applied Chemistry

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Monocyclic as well as polycyclic silylamides of a series of main group metals such as Li, Ge, Sn and Pb (the last three elements mostly in the oxidation state þII) have been synthesized, analyzed by spectroscopic means and structurally characterized over the last 20 years. All these molecular compounds have in common a Lewis acidic (electrophilic) metal center with at least one bond to nitrogen. In the case of the bis(amino)germylenes, -stannylenes and -plumbylenes, the metal centers are poorly coordinated (only two bonds to nitrogen) and may directly react with organic -systems. This nonclassical behaviour will be discussed shortly. If the metal atoms are more highly coordinated by intramolecular nitrogen or oxygen bases, the oxidation to stable germaimines or germathiones is possible, whereas the corresponding tin compounds are only transient in nature. Finally, the use of special metal alkoxides [for example Ge(OtBu)

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Section: Introductionmentioning

confidence: 99%

Metal centered molecules and their application in chemistry and physics

Veith¹,

Rammo²,

Faber³

et al. 1999

Pure and Applied Chemistry

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“…Ti(NEt 2 ) 4 was synthesized by modifying Bradley's original procedure as follows. [18][19][20] A hexane (20 mL) solution of n-BuLi (46 mL, 115 mmol) was added dropwise over 30 min to an ether (80 mL) solution of diethylamine (20 mL) at -78 ℃. The reaction mixture was allowed to warm up to room temperature and stirred for 1 h, then the solvent was removed under reduced pressure, and the resulting solid was dissolved in 100 mL of ether and cooled to -78 ℃ again.…”

Section: Methodsmentioning

confidence: 99%

Ligand Bridged and Bis‐ligand Coordinated Titanium Complexes: Synthesis, Structure and Relevance to Phenylacetylene Hydroanilination Catalysis

Han

Wei

et al. 2007

Chin. J. Chem.

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Two ligand bridged binuclear titanium complexes Ti 2 (bppda) 3 (NMe 2 ) 2 •3THF (1) and Ti 2 (bppda) 3 (NEt 2 ) 2 •3THF (2) and one bis-ligand coordinated mononuclear complex Ti(bppda) 2 (3) (ligand: H 2 bppda＝N,N'-Bis(2-pyrrylmethylidene)-1,2-phenylenediamine) were synthesized by adjusting the ratio of the starting materials and the reaction speed. The complexes were fully characterized with NMR, elemental analysis and X-ray crystal diffraction. The catalytic activity of the complex 1 to phenylacetylene hydroanilination reaction was also investigated.

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“…It is due to these reasons that titanium dispersions in polymers are achieved through the fine particles or nanoparticles of TiO 2 . Organic dispersions are those in which both polar & non-polar organic fluids and non-ionic steric stabilizers or dispersants are used to prevent the particles from forming larger aggregate ions [72]. Generally the dispersion in polymeric materials has proven to be difficult and frequently results in phase separation due to agglomeration.…”

Section: Need For Titanium Dispersionsmentioning

confidence: 99%

Challenges in preparation of metal-containing nanocomposites; dispersion of titanium into plastics

et al. 2010

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Abstract:Metal containing polymers are of great interest as they have proven to be the most promising materials for applications such as microelectronics, holography and magnetic recording of information. Metal containing polymers also provide an alternative to even the specialty glass materials conventionally used for optical applications. Metals such as barium, lead and lanthanum have been used to improve the optical properties such as refractive index and mechanical properties such as hardness of optical plastics. The metal-containing optical plastic materials with improved refractive index of as much as 1.60 along with the Abbe number of more than 30 have been successfully designed using these metals by the authors of this paper. To further increase the refractive index without any drop in Abbe number and to improve the hardness of the polymer matrix, titanium would be the most promising metal. Incorporation of titanium in plastic matrices to form homogeneous and optically clear compositions is a challenging task. This paper reviews the state-ofthe-art by which titanium can be dispersed in polymer matrices to form metal containing composites as optical plastics.

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Metal Alkoxides and Dialkylamides

Cited by 119 publications

References 173 publications

Metal centered molecules and their application in chemistry and physics

Metal centered molecules and their application in chemistry and physics

Ligand Bridged and Bis‐ligand Coordinated Titanium Complexes: Synthesis, Structure and Relevance to Phenylacetylene Hydroanilination Catalysis

Challenges in preparation of metal-containing nanocomposites; dispersion of titanium into plastics

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