01933nas a2200193 4500008004100000022001400041245012000055210006900175260011000244300001400354490000700368520114000375100002001515700002001535700002101555700001501576700002001591856012801611 2010 eng d a0959-942800aSelective CO2 and H-2 adsorption in a chiral magnesium-based metal organic framework (Mg-MOF) with open metal sites0 aSelective CO2 and H2 adsorption in a chiral magnesiumbased metal aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcSEP a9073-90800 v203 a

A rare porous magnesium-based metal-organic framework, Mg-MOF-1 [Mg(3,5-PDC)(H2O)], was synthesized solvothermally in DMF. Structural determination by X-ray single-crystal diffraction technique reveals that this chiral MOF (space group P6(1)22) is constructed by helical assembly of Mg2+ ions with achiral 3,5-pyridine dicarboxylates and coordinating water molecules, to form a three-dimensional framework with parallel hexagonal channels. The structural detail of its 0D analogue Mg-MOF-2 [Mg(2,4-PDC)(H2O)(3)] has been discussed to show how subtle variation in the ligand architecture changes the resulting structure from 0D to 3D. Mg-MOF-1 remains robust and porous upon evacuation of the coordinating water molecules. This is the first report of a chiral hexagonal Mg-MOF synthesized from an achiral organic building unit. Open Mg metal sites show selective hydrogen (H-2) adsorption (ca. 0.8 wt% at 77 K) and carbon dioxide (CO2) uptake (ca. 0.7 mmol g(-1) at 298 K) over nitrogen at 1 atm. Ab initio quantum chemical calculation of adsorption energies and possible adsorption sites of hydrogen molecules are also reported.

1 aMallick, Arijit1 aSaha, Subhadeep1 aPachfule, Pradip1 aRoy, Sudip1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/selective-co2-and-h-2-adsorption-chiral-magnesium-based-metal-organic-framework-mg-mof-002010nas a2200193 4500008004100000022001400041245009200055210006900147260007100216300001400287490000700301520128800308100002001596700002001616700002101636700001501657700002001672856012401692 2011 eng d a0020-166900aStructure and gas sorption behavior of a new three dimensional porous magnesium formate0 aStructure and gas sorption behavior of a new three dimensional p a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcFEB a1392-14010 v503 a

A new three-dimensional magnesium formate polymorph, namely, gamma-[Mg-3(O2CH)(6)] has been synthesized via in situ formate anion generation method. gamma-Mg-formate crystallizes in space group Pbcn, and structural determination by X-ray single crystal diffraction reveals a three-dimensional network of Mg2+ linked by formate anions. All formate anions possess similar binding mode to the metal center with one oxygen of a particular formate anion binds to one metal center (mu(1) oxygen) and other oxygen binds to two metal centers (mu(2) oxygen). N-2 adsorption studies indicate that the framework displays permanent porosity. The specific surface area of gamma-Mg-formate (BET, 120 m(2) gm(-1)) is lower than the alpha- polymorph (BET, 150 m(2) gm(-1)). However, the initial hydrogen uptake of gamma-Mg-formate reached almost 1.0 wt % when the adsorbate pressure approached 760 Torr at 77 K. This is higher than the hydrogen uptake of alpha-Mg-formate (0.6 wt %). gamma-Mg-formate, shows a moderate affinity and capacity for CO2 (3.4 angstrom kinetic diameter) at 298 K. The CO2 uptake at 760 Torr is 2.01 mmol gm(-1)(47.0 cc gm(-1)). Although this CO2 uptake is somewhat modest, it compares well with the CO2 uptake of several Mg-MOFs and ZIFs reported in the literature.

1 aMallick, Arijit1 aSaha, Subhadeep1 aPachfule, Pradip1 aRoy, Sudip1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/structure-and-gas-sorption-behavior-new-three-dimensional-porous-magnesium-formate-000844nas a2200181 4500008004100000022001400041245011800055210006900173260011000242300001400352490000700366520007500373100001700448700002700465700002000492700002000512856013000532 2013 eng d a1359-734500aSalt metathesis in three dimensional metal-organic frameworks (MOFs) with unprecedented hydrolytic regenerability0 aSalt metathesis in three dimensional metalorganic frameworks MOF aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcAPR a5262-52640 v493 a

{Eight Zn-based porous (1.2 nm) homochiral MOFs (ValZnX, AlaZnX

1 aKundu, Tanay1 aSahoo, Subash, Chandra1 aSaha, Subhadeep1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/salt-metathesis-three-dimensional-metal-organic-frameworks-mofs-unprecedented-hydrolytic-001586nas a2200205 4500008004100000022001400041245008900055210006900144260007100213300001400284490000700298520083700305100002001142700002101162700002001183700001901203700002001222700002201242856011601264 2016 eng d a0897-475600aSupramolecular metallogel that imparts self-healing properties to other gel networks0 aSupramolecular metallogel that imparts selfhealing properties to a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcMAY a3210-32170 v283 a

A unique proton conductive and moldable supramolecular metallogel (CuA-Ox-gel) made upon mixing at room temperature well-defined stock solutions of Cu(OAc)(2). H2O and oxalic acid dehydrate was found to have self-healing properties. Remarkably, the system also displayed an unprecedented ability to impart self-healing properties to other gel networks lacking this capacity. A self-healed CuA-Ox metallogel was found to have essentially the same nanofibrillar morphology, thermal stability, rheological properties, and conductivity as the freshly prepared sample. The discovery also allowed the fabrication of self-healing conductive composites containing conductive carbonaceous materials. Overall, this work serves as a proof of concept for the transfer of self-healing properties between completely different gel networks.

1 aFeldner, Tobias1 aHaering, Marleen1 aSaha, Subhadeep1 aEsquena, Jordi1 aBanerjee, Rahul1 aDiaz, David, Diaz uhttps://library.ncl.res.in/content/supramolecular-metallogel-imparts-self-healing-properties-other-gel-networks