Transition-Metal Alkoxides

Mehrotra, R. C.

doi:10.1016/s0898-8838(08)60096-3

Cited by 87 publications

(26 citation statements)

References 156 publications

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“…The two structures 9 and 10 are different, the Ge-Ge-bridging cyclopentadienyl unit is unsymmetrical in 9 whereas the corresponding bridge in 10 is symmetrical. The whole [Me 2 Si(NtBu) 2 M] 2 Cp t unit is electronically similar to the [Me 2 Si(NtBu) 2 …”

Section: And [17])mentioning

confidence: 87%

“…The cyclopentadiene adduct 5 can also be obtained by treating the transition metal complex Ni[Sn(NtBu) 2 SiMe 2 ] 4 [16] with cyclopentadiene. In this reaction, compound 8 is obtained as a side product which contains two fused cyclopentadienyl groups each of these coordinated by Me 2 Si(NtBu)(NtBu[H])Sn (see Fig.…”

Section: Methodsmentioning

confidence: 99%

“…The neighbouring nitrogen atoms often participate in the reactions as they function as proton attractors. This special property differentiates these carbene analogues from carbon substituted derivatives such as [(Me 3 Si) 2 CH] 2 M (M ¼ Ge, Sn, Pb) [22]. …”

Section: And [17])mentioning

confidence: 99%

“…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%

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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: And [17])mentioning

confidence: 87%

Section: Methodsmentioning

confidence: 99%

Section: And [17])mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Metal centered molecules and their application in chemistry and physics

Veith¹,

Rammo²,

Faber³

et al. 1999

Pure and Applied Chemistry

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“…clusters, and polymers or metal organic frameworks [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. Indeed, since more than two decades, metal aggregates are used in the low-cost synthesis of superconductors and other oxide materials based on the sol-gel technique or as volatile precursors in the MOCVD (Metal Organic Chemical Vapor Deposition) process [3,11,13,[17][18][19][20][21]. One of the major problems of the synthesis of organo-metal(II) compounds, including the alkaline earth metal ions, is their possible tendency to form insoluble polymers [21][22][23][24], on one hand due to their low metal oxidation state M II , which only allows two anionic ligands, and on the other hand, their ionic radii, which demand a high coordination number.…”

Section: Introductionmentioning

confidence: 99%

Polyether Adducts of d‐Block Metal Compounds as Starting Materials for New Cluster Compounds

Crochet

Fromm

2010

Zeitschrift anorg allge chemie

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Abstract. New crystalline cobalt, nickel, zinc, and mercury halide adducts with polyethers as ligands have been isolated, characterized, and identified as [Co(μ-Cl) IntroductionWe are interested in molecular compounds, especially oxygen donor adducts of metal halides, because they are useful as starting materials in the synthesis of low-dimensional polymeric compounds, i.e. clusters, and polymers or metal organic frameworks [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. Indeed, since more than two decades, metal aggregates are used in the low-cost synthesis of superconductors and other oxide materials based on the sol-gel technique or as volatile precursors in the MOCVD (Metal Organic Chemical Vapor Deposition) process [3,11,13,[17][18][19][20][21]. One of the major problems of the synthesis of organo-metal(II) compounds, including the alkaline earth metal ions, is their possible tendency to form insoluble polymers [21][22][23][24], on one hand due to their low metal oxidation state M II , which only allows two anionic ligands, and on the other hand, their ionic radii, which demand a high coordination number. A parry to prevent a high degree of oligomerization is the use of neutral Lewis-coordinating ligands such as monodentate THF or multidentate polyether ligands, which avoid any further "metal-metal contacts" via bridging ligands, saturating the metal cation. However, the chemistry of such metal halide or pseudo-halide adducts with neutral Lewis-coordinating ligands (usually non-polar aprotic solvents) is still not systematically studied.Compounds that have so far been isolated in the class of molecular species are, for instance, the zero-dimensional com- Published in =HLWVFKULIW I U DQRUJDQLVFKH XQG DOOJHPHLQH &KHPLH ± which should be cited to refer to this work.

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Nickel: Inorganic & Coordination Chemistry

Collinson

Schröder

2005

Encyclopedia of Inorganic Chemistry

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The general features and coordination chemistry of Ni 0 to Ni IV and complexation to cyanide, N‐, P‐, O‐, S‐, and halide‐donor ligands are detailed. The reactivity of Ni II complexes in the template synthesis of macrocycles and for the oligomerization and polymerization of alkenes are highlighted. The stabilization of radical Ni I and Ni III centers is related to the associated ligand types and metal‐ion stereochemistries. The supramolecular chemistry of Ni II includes the formation of aggregates, framework polymers, and receptors. The structures of a number of Ni‐containing enzymes have been elucidated and the formation of low‐molecular weight complex mimics is discussed.

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Transition-Metal Alkoxides

Cited by 87 publications

References 156 publications

Metal centered molecules and their application in chemistry and physics

Metal centered molecules and their application in chemistry and physics

Polyether Adducts of d‐Block Metal Compounds as Starting Materials for New Cluster Compounds

Nickel: Inorganic & Coordination Chemistry

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