Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Dean C. Duncan"'
Publikováno v:
Journal of Chemical Crystallography. 38:431-435
We report two new crystal and molecular structures of the following monomeric arylimido tungsten tetrachloride complexes, [WCl4(NC6H4I-p)(CH3CN)] (1) and [WCl4(NC6H3-2,6-i-Pr 2)(CH3CN)] (2), containing weakly coordinating acetonitrile ligands. Comple
Autor:
Yurii V. Geletii, Richard S. Reiner, Daniel A. Hillesheim, Laurent Delannoy, Djamaladdin G. Musaev, Rui Cao, Jong Woo Han, Travis M. Anderson, Dean C. Duncan, Roman F. Renneke, Craig L. Hill, Rajai H. Atalla, Nelya M. Okun, Ira A. Weinstock
Publikováno v:
Comptes Rendus Chimie. 10:305-312
Progress in four interrelated catalysis research efforts in our laboratory are summarized: (1) catalytic photochemical functionalization of unactivated C–H bonds by polyoxometalates (POMs); (2) self-repairing catalysts; (3) catalysts for air-based
Autor:
David G. Whitten, Dean C. Duncan and
Publikováno v:
Langmuir. 16:6445-6452
The self-assembly of stilbene−cholesterol tethered dyads into fibrous networked structures induces the thermoreversible gelation of several classes of organic solvents. Herein, the gel and solution phases of the gelator, p-α-cholesteryl-p‘-octox
Autor:
Jeff C. Duhacek, Dean C. Duncan
Publikováno v:
Inorganic Chemistry. 46:7253-7255
A synthetic route of potentially wide scope is reported herein for the organoimido functionalization of polyoxotungstates. This report focuses on the reaction between the monovacant lacunary polyoxotungstate, alpha-((n-C4H9)4N)4H3[PW11O39], and W(NC6
Autor:
Dean C. Duncan, Marye Anne Fox
Publikováno v:
The Journal of Physical Chemistry A. 102:4559-4567
Transient absorbance changes following nanosecond flash excitation of M4[W10O32] (M = Na+ or (n-C4H9)4N+ ≡ Q+) in acetonitrile reveal a long-lived ligand-to-metal charge-transfer (LMCT) intermediate [W10O32]4-† (φ ∼ 0.50, τ > 74 ns) as the re
Publikováno v:
Inorganic Chemistry. 37:398-406
Reported here are both STM images and spatially resolved tunneling spectra of four different polyoxometalate (POM) structural class members: Keggin structure, H(3)[PW(12)O(40)] (spherical); Finke-Droege (FD) structure, Na(16)[Cu(4)(H(2)O)(2)(P(2)W(15
Publikováno v:
The Journal of Physical Chemistry A. 102:5333-5340
Composite nanocrystalline SnO2 thin films layered with a polyimide sensitizer to which is attached a Ru(bpy)32+ derivative were prepared by spin-coating. Photophysical and electrochemical properties of such composite films, when formulated as polymer
Publikováno v:
Inorganic Chemistry. 45:9628-9630
The equilibria and speciation of the proton cryptate polyoxometalate alpha-(H2)W(12)O(40)]6- (1) were examined by NMR following the phase-transfer cation metathesis of aqueous Na(6)1 with Q+Br-/CH(2)Cl(2), leading to the isolation of the (n-Bu)4N+ (Q
Publikováno v:
Inorganic Chemistry. 36:4381-4386
A tetranuclear ferric Keggin sandwich-type heteropolyanion has been synthesized by the reaction of the lacunary species Δ-Na8H[PW9O34] with FeCl2 followed by O2 oxidation in nonaqueous media. The structure of [(n-C4H9)4N]6[FeIII4(H2O)2(PW9O34)2]·4C
Publikováno v:
Inorganic Chemistry. 36:4208-4215
The reaction of [P2W15O56]12- and aqueous Fe3+ forms two ferric polytungstophosphate derivatives that have been isolated, purified, and characterized by X-ray crystallography and several physical methods. At pH ∼3 and [Na+] = 2 M, needles of Na12[F