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

The title compound, C24H21N3O, was prepared by the reaction of (Z)-2-(1H-indol-3-ylmethyl­ene)-1-aza­bicyclo­[2.2.2]octan-3-one with α-bromo-p-toluonitrile, under phase-transfer catalytic (PTC) conditions using triethyl­benzyl­ammonium chloride and 50% w/v aqueous NaOH solution in dichloro­methane. The crystal structure indicates the presence of a double bond with Z geometry connecting the aza­bicyclic and indole groups.

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(Z)-4-[3-(3-Oxoquinuclidin-2-ylidene-meth-yl)-1H-indol-1-ylmeth-yl]benzo-nitrile.

The structure of bovine pancreatic trypsin inhibitor at 125k: definition of carboxyl-terminal residues glycine-57 and alanine-58

The title compound {systematic name: (1R,2R,5R)-(+)-2-hydr­oxy-2,6,6-trimethyl-3-[(3-pyrid­yl)methyl­imino]­bicyclo[3.1.1]­heptane}, C16H22N2O, was obtained by the condensation reaction of (1R,2R,5R)-(+)-2α-hydroxy­pinan-3-one with 3-(amino­meth­yl)pyridine in the presence of boron trifluoride. The compound was obtained as an enantiomerically pure isomer, and has the 1R,2R,5R configuration. In the crystal structure, mol­ecules are linked together by inter­molecular O—H⋯N hydrogen bonds between the hydr­oxy group of the pinanone group and the N atom of the pyridine ring, forming mol­ecular chains.

A (1R,2R,5R)-(+)-2α-hydroxy­pinan-3-one ketimine

In the title compound, C20H17NO4, the double bond of the acrylonitrile group separating the 1-benzofuran moiety from the 3,4,5-trimeth­oxy­phenyl ring has Z geometry. The 1-benzofuran groups are π–π stacked with inversion-related counterparts such that the furan ring centroid–centroid distance is 3.804 (5) A. The dihedral angle between the planes of the trimeth­oxy­phenyl ring and the acrylonitrile group is 24.2 (2)°.

https://journals.iucr.org/e/issues/2012/03/00/hg5136/hg5136.pdf

(Z)-3-(1-Benzofuran-2-yl)-2-(3,4,5-tri­meth­oxy­phen­yl)acrylonitrile

The mol­ecule of the title compound, C8H8BrClO2, sits on a crystallographic inversion centre, which ensures that the halogen sites are disordered, with exactly 50% Br and 50% Cl at each halogen site. The inversion renders the two meth­oxy groups equivalent. These groups lie almost in the plane of the aromatic ring system, making dihedral angles of 8.8 (4)° to the ring.

https://journals.iucr.org/e/issues/2010/02/00/si2231/si2231.pdf

Sean Parkin

Papers

(Z)-4-[3-(3-Oxoquinuclidin-2-ylidene-meth-yl)-1H-indol-1-ylmeth-yl]benzo-nitrile.

The structure of bovine pancreatic trypsin inhibitor at 125k: definition of carboxyl-terminal residues glycine-57 and alanine-58

A (1R,2R,5R)-(+)-2α-hydroxypinan-3-one ketimine

(Z)-3-(1-Benzofuran-2-yl)-2-(3,4,5-trimethoxyphenyl)acrylonitrile

1-Bromo-4-chloro-2,5-dimethoxy-benzene.

Sean Parkin

Papers

(Z)-4-[3-(3-Oxoquinuclidin-2-ylidene-meth-yl)-1H-indol-1-ylmeth-yl]benzo-nitrile.

The structure of bovine pancreatic trypsin inhibitor at 125k: definition of carboxyl-terminal residues glycine-57 and alanine-58

A (1R,2R,5R)-(+)-2α-hydroxy­pinan-3-one ketimine

(Z)-3-(1-Benzofuran-2-yl)-2-(3,4,5-tri­meth­oxy­phen­yl)acrylonitrile

1-Bromo-4-chloro-2,5-dimethoxy-benzene.

A (1R,2R,5R)-(+)-2α-hydroxypinan-3-one ketimine

(Z)-3-(1-Benzofuran-2-yl)-2-(3,4,5-trimethoxyphenyl)acrylonitrile