Crystalline metal-organic frameworks (MOFs) are formed by reticular synthesis, which creates strong bonds between inorganic and organic units. Careful selection of MOF constituents can yield crystals of ultrahigh porosity and high thermal and chemical stability. These characteristics allow the interior of MOFs to be chemically altered for use in gas separation, gas storage, and catalysis, among other applications. The precision commonly exercised in their chemical modification and the ability to expand their metrics without changing the underlying topology have not been achieved with other solids. MOFs whose chemical composition and shape of building units can be multiply varied within a particular structure already exist and may lead to materials that offer a synergistic combination of properties.

The Chemistry and Applications of Metal-Organic Frameworks

Deposits of clastic carbonate-dominated (calciclastic) sedimentary slope systems in the rock record have been identified mostly as linearly-consistent carbonate apron deposits, even though most ancient clastic carbonate slope deposits fit the submarine fan systems better. Calciclastic submarine fans are consequently rarely described and are poorly understood. Subsequently, very little is known especially in mud-dominated calciclastic submarine fan systems. Presented in this study are a sedimentological core and petrographic characterisation of samples from eleven boreholes from the Lower Carboniferous of Bowland Basin (Northwest England) that reveals a >250 m thick calciturbidite complex deposited in a calciclastic submarine fan setting. Seven facies are recognised from core and thin section characterisation and are grouped into three carbonate turbidite sequences. They include: 1) Calciturbidites, comprising mostly of highto low-density, wavy-laminated bioclast-rich facies; 2) low-density densite mudstones which are characterised by planar laminated and unlaminated muddominated facies; and 3) Calcidebrites which are muddy or hyper-concentrated debrisflow deposits occurring as poorly-sorted, chaotic, mud-supported floatstones. These

Phd by thesis

J. Appl. Cryst.の発刊に際して

1. INTRODUCTION Among the classes of highly porous materials, metalÀorganic frameworks (MOFs) are unparalleled in their degree of tunability and structural diversity as well as their range of chemical and physical properties. MOFs are extended crystalline structures wherein metal cations or clusters of cations (\" nodes \") are connected by multitopic organic \" strut \" or \" linker \" ions or molecules. The variety of metal ions, organic linkers, and structural motifs affords an essentially infinite number of possible combinations. 1 Furthermore, the possibility for postsynthetic modification adds an additional dimension to the synthetic variability. 2 Coupled with the growing library of experimentally determined structures, the potential to computationally predict, with good accuracy, affinities of guests for host frameworks points to the prospect of routinely predesigning frameworks to deliver desired properties. 3,4 MOFs are often compared to zeolites for their large internal surface areas, extensive porosity, and high degree of crystallinity. Correspondingly, MOFs and zeolites have been utilized for many of the same applications

Metal–Organic Framework Materials as Chemical Sensors

Metal–Organic Frameworks for Separations

Functionalization of the pro-cata positions of pentacene with groups held perpendicular to the aromatic plane, in this case through a rigid 1,3-dioxole unit, yields pentacene derivatives that are stable and soluble, and still maintain edge-to-face interactions in the solid state.

A New Functionalization Strategy for Pentacene

The TiCl 2 moiety of 2,2'-ethylenebis(η 5 -indenyl)titanium dichloride, [TiCl 2 (C 20 H 16 )], spans the mirror plane in space group Pnma, forcing disorder of the bridged bis-indenyl ligand. The Ti centre has a distorted tetrahedral geometry; the (η 5 -centroid)-Ti-(η 5 -centroid) angle is 128.6 (2) o . The indenes bend away from the TiCl 2 moiety, which twists 19.1 (2) o out of the cavity between the indenes

http://www.chem.uky.edu/xray/people_documents/Parkin/Parkin_Papers_pdfs/14_ACsCv50p169.pdf

2,2'-Ethylenebis(η5-indenyl)TiCl2

The dihedral angle between the benzene rings in the title compound, C13H6Cl6O, is 49.06 (8)°. The molecule has crystallographic twofold rotation symmetry.

3,3′,5,5′-Tetra­bromo-4,4′-dihydroxy­biphen­yl

The title compound (systematic name: 12-{[2-(4-hydroxyphenyl)ethyl]aminomethyl}-4,8-dimethyl-3,14-dioxatricyclo[9.3.0.02,4]tetradec-7-en-13-one monohydrate), C23H31NO4·H2O, was obtained by the reaction of tyramine with parthenolide. The configuration of the new chiral center in the title compound is R, establishing the stereospecificity of the amination reaction. The water molecule is disordered over three positions; the site occupancy factors are 0.45, 0.40 and 0.15.

/pdf/11r-13-2-4-hydroxy-phen-yl-ethyl-amino-4-5-ep-oxy-11-13-1ow2fugy66.pdf

(11R)-13-[2-(4-Hydroxy-phen-yl)ethyl-amino]-4,5-ep-oxy-11,13-dihydro-costunolide monohydrate.

The title compound, C18H17NOS2, was prepared by the base-catalyzed Aldol condensation of tropinone with thio­phene-3-carboxaldehyde. It crystallizes with the molecule on a mirror plane. Both double bonds linking the tropinone and thio­phene rings adopt the E configuration, with the thienyl-ring flip and the H atoms of the N-methyl group disordered.

Sean Parkin

Papers

A New Functionalization Strategy for Pentacene

2,2'-Ethylenebis(η5-indenyl)TiCl2

3,3′,5,5′-Tetrabromo-4,4′-dihydroxybiphenyl

(11R)-13-[2-(4-Hydroxy-phen-yl)ethyl-amino]-4,5-ep-oxy-11,13-dihydro-costunolide monohydrate.

(2E,4E)-8-Methyl-2,4-bis(3-thienylmethylene)- 8-azabicyclo(3.2.1)octan-3-one

Sean Parkin

Papers

A New Functionalization Strategy for Pentacene

2,2'-Ethylenebis(η5-indenyl)TiCl2

3,3′,5,5′-Tetra­bromo-4,4′-dihydroxy­biphen­yl

(11R)-13-[2-(4-Hydroxy-phen-yl)ethyl-amino]-4,5-ep-oxy-11,13-dihydro-costunolide monohydrate.

(2E,4E)-8-Methyl-2,4-bis(3-thienylmethylene)- 8-azabicyclo(3.2.1)octan-3-one

3,3′,5,5′-Tetrabromo-4,4′-dihydroxybiphenyl