Crystal structures of [IrCl(NHCHPh)((dppm)(C(Ndppm))-κ ,,')]Cl·5.5MeCN and [IrI(NHCHPh)(((dppm)C(N))-κ ,)(dppm-κ ,')]I(I)·0.5I·MeOH·0.5CHCl: triazene fragmentation in a PCN pincer iridium complex.

The structure of [IrCl(CHNP)]Cl·5.5CHCN or [IrCl(NHCHPh)(((dppm)C(Ndppm))κ )]Cl·5.5CHCN [, dppm = bis-(di-phenyl-phos-phino)methane; systematic name: di-chlorido(1,1,3,3,7,7,9,9-octa-phenyl-4,5-di-aza-1,3λ,7λ,9-tetra-phosphanona-3,5-dien-6-yl-κ , )-(phenyl-methanimine-κ)iridium(III) chloride aceto-nitrile hemihendeca-solvate], resulting from an oxygen-mediated cleavage of a triazeneyl-idene-phospho-rane ligand producing a diazo-methyl-ene-phospho-rane and a nitrene moiety, which in turn rearrange a Staudinger reaction and a 1,2-hydride shift to the first title complex, involves a six-coordinate Ir complex cation coordinated by a PCP pincer ligand, a benzaldimine and two chlorido ligands.

Crystal structures of two PCN pincer iridium complexes and one PCP pincer carbodi-phospho-rane iridium inter-mediate: substitution of one phosphine moiety of a carbodi-phospho-rane by an organic azide.

The structure of [Ir{(4-Cl-CHN)C(dppm)-κ ,,}(dppm-κ ,')]Cl·1.5CHCl·0.5CH (CHClIrNP·1.

Crystal structures of four new iridium complexes, each containing a highly flexible carbodi-phos-phorane PCP pincer ligand.

Compound [Ir(CH)(CHP)]Cl or [Ir(cod)(CH(dppm)-κ,,)]Cl (), was obtained from [IrCl(cod)] and the carbodi-phospho-rane (CDP) salt [CH(dppm)]Cl [where cod = cyclo-octa-1,5-diene and dppm = bis-(di-phenyl-phosphino)methane]. Treatment of with thallium(I) tri-fluoro-methane-sulfonate [Tl(OTf)] and subsequent crystallization gave complex [Ir(CH)(CHP)](OTf)·CHCOCH·CHCl or [Ir(cod)(CH(dppm)-κ,,)](OTf)·CHCOCH·CHCl () [systematic name: (cyclo-octa-1,5-diene)(1,1,3,3,5,5,7,7-octa-phenyl-1,7-diphospha-3,5-di-phospho-niaheptan-4-yl)iridium(I) bis-(tri-fluoro-methane-sulfonate)-ethyl acetate-di-chloro-methane (1/1/1)]. This five-coordinate iridium(I) complex cation adopts a trigonal-bipyramidal geometry with the CDP carbon and one cod double bond in axial sites.

Liquid-State NMR Analysis of Nanocelluloses.

Recent developments in ionic liquid electrolytes for cellulose or biomass dissolution has also allowed for high-resolution H and C NMR on very high molecular weight cellulose. This permits the development of advanced liquid-state quantitative NMR methods for characterization of unsubstituted and low degree of substitution celluloses, for example, surface-modified nanocelluloses, which are insoluble in all molecular solvents. As such, we present the use of the tetrabutylphosphonium acetate ([P][OAc]):DMSO- d electrolyte in the 1D and 2D NMR characterization of poly(methyl methacrylate) (PMMA)-grafted cellulose nanocrystals (CNCs).

Superhydrophobic Paper from Nanostructured Fluorinated Cellulose Esters.

The development of economically and ecologically viable strategies for superhydrophobization offers a vast variety of interesting applications in self-cleaning surfaces. Examples include packaging materials, textiles, outdoor clothing, and microfluidic devices. In this work, we produced superhydrophobic paper by spin-coating a dispersion of nanostructured fluorinated cellulose esters.