Reaction chemistry of a tungsten disilene complex: net one atom insertion of chalcogens into Cp2W(.eta.2-Me2Si:SiMe2)

Hong, Paula; Damrauer, Niels H.; Carroll, Patrick J.; Berry, Donald H.

doi:10.1021/om00033a048

Cited by 38 publications

(8 citation statements)

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“…Structural data reported for silyl−transition-metal complexes prepared from hydrosilanes and that include only those derivatives with “classical” M−Si, M−H, and/or Si−H bonds are summarized in Table . − …”

Section: Solid-state Structuresmentioning

confidence: 99%

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Reactions of Hydrosilanes with Transition-Metal Complexes: Formation of Stable Transition-Metal Silyl Compounds

1998

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Section: Solid-state Structuresmentioning

confidence: 99%

“…SiMo: 2.550(2); 2.556(4); 2.556(2), 2.558(2), 2.559(2); 2.670(2) . SiW: 2.388(6); 2.469(2); 2.533(3); 2.544(4); 2.547(4); 2.551(2), 2.559(4); 2.559(2); 2.565(4); 2.591(3); 2.606(2); 2.633(2); 2.652(2) …”

Section: Solid-state Structuresunclassified

Reactions of Hydrosilanes with Transition-Metal Complexes: Formation of Stable Transition-Metal Silyl Compounds

1998

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“…This work provides a new paradigm for the family of POM-hybrid responsive materials, which should also be instructive for the further fabrication of POM-integrated smart devices and nanosystems. 46…”

Section: Introductionmentioning

confidence: 99%

Thermal-induced dynamic self-assembly of adenine-grafted polyoxometalate complexes

Yan

et al. 2012

Dalton Trans.

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A new kind of organic-inorganic hybrid complexes based on polyoxometalate were synthesized through symmetrically grafting two adeninyl groups onto Anderson-type MnMo(6) clusters and encapsulating the clusters by organic surfactants. The resultant complexes exhibited thermal-induced dynamic self-assembly behaviors which greatly depended on the ambient temperature and the chain length of cationic surfactants. With the encapsulation of a short surfactant tetrabutyl ammonium, the complex assembled into fibrous, rod-like, and tubular architectures respectively upon heating; while for the case of using a long surfactant dimethyldioctadecyl ammonium as counter ions, the assemblies of the complex transformed from fibers to spheres with the increased temperature. Moreover, the two types of transformations were both reversible during a cooling process. The related mechanism was investigated by combining multiple characterization methods including X-ray crystallography, XPS, FT-IR and temperature-dependent (1)H NMR, which indicated that such a thermal-induced morphological transformation resulted from a synergy effect of the variation of the multiple hydrogen bonds among the complexes and the rearrangement of the surfactants surrounding the MnMo(6) clusters. These results demonstrated a new concept that hydrogen bonds can be rationally employed as the driving force for the fabrication of polyoxometalate-based materials with smart responsive properties.

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“…1-4 They are anionic metal-oxygen clusters comprising early transition metals (mainly V, Mo, W) in their highest oxidation states and are typically synthesised from low nuclearity precursors in aqueous solutions. 5,6 POMs are generally divided into two sub-classes, namely isopolyanions and heteropolyanions, and the latter, in which additional metal centres are incorporated (commonly Si, Ge, P, As, Sb, Bi), exhibit a higher degree of stability in the overall system. 7,8 Ti(IV) containing polyoxotungstates are promising for potential applications in medicine 9, 10 and catalysis, specifically selective oxidation [11][12][13] catalysis.…”

Section: Introductionmentioning

confidence: 99%

Assembly of titanium embedded polyoxometalates with unprecedented structural features

et al. 2010

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Two titanium embedded polyoxometalates with unprecedented structural features are presented: a monotitanium containing tungstoantimonate Na(13)H(3)[TiO(SbW(9)O(33))(2)]·33 H(2)O featuring a {Ti=O}(2+) moiety (1) and a hexatitanium containing tungstoarsenate K(6)[Ti(4)(H(2)O)(10)(AsTiW(8)O(33))(2)]·30 H(2)O containing a {Ti(4)(H(2)O)(10)}(16+) moiety (2). Both compounds have been fully characterised by single crystal X-ray diffraction, elemental analysis, IR and TGA. 1 is constructed from two α-B-{Sb(III)W(9)O(33)} fragments linked by five sodium cations and an unprecedented square pyramidal Ti(O)O(4) group with a terminal Ti=O bond, and 2 exhibits a Krebs-type structure composed of two {AsTiW(8)O(33)} fragments, where one W(VI) centre has been substituted for a Ti(IV) centre in each, fused together via a belt of four additional Ti(IV) centres. This system represents the tungsten Ti-incorporated polyoxoanion with one of the highest Ti:W ratios so far reported. Additionally, 2 could also be isolated as an n-tetrabutylammonium salt and has been further characterised by electrochemistry and electrospray ionisation (ESI) MS studies. Due to the unique nature of these systems, both have been fully investigated using DFT calculations yielding highly interesting results. Structure 1 has been optimised with five sodium atoms in the belt position, which in addition to reducing the high charge of the cluster influence a stabilisation of the antimony lone pairs. Electrostatic potential calculations highlight the high electronegativity of the terminal oxygen on the titanium centre, enhancing real potentiality as a reactive site for catalysis.

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Reaction chemistry of a tungsten disilene complex: net one atom insertion of chalcogens into Cp2W(.eta.2-Me2Si:SiMe2)

Cited by 38 publications

References 0 publications

Reactions of Hydrosilanes with Transition-Metal Complexes: Formation of Stable Transition-Metal Silyl Compounds

Reactions of Hydrosilanes with Transition-Metal Complexes: Formation of Stable Transition-Metal Silyl Compounds

Thermal-induced dynamic self-assembly of adenine-grafted polyoxometalate complexes

Assembly of titanium embedded polyoxometalates with unprecedented structural features

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