01815nas a2200217 4500008004100000022001400041245013900055210006900194260007700263300001400340490000700354520095800361653002601319653001101345653001401356653003901370653002101409100001701430700002001447856013001467 2013 eng d a1439-423500aPOM-catalyzed in situ ligand synthesis for the construction of metal complexes and their use in the formation of coordination polymers0 aPOMcatalyzed in situ ligand synthesis for the construction of me aBOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcAPR a1009-10150 v143 a

Six organicinorganic hybrid materials were synthesized by the in situ oxidation of neocuproine by using MoO3/Na2MoO4 as the catalyst in the presence of Cu(NO3)2. The crystal structures of Mo8-Cu4-PHEN and Mo8-Cu2-5(2PIC) are composed of [Mo8O26]4 polyoxometalate (POM) units, whereas the crystal structure of Mo6-Cu-COPHEN is composed of a [Mo6O19]2 POM unit; both POM units could be considered as the active form of the catalyst. Reaction of the hybrid materials with 1,3,5-benzenetricarboxylic acid (BTC) resulted in the formation of two different coordination polymers (CPs) under different reaction conditions. These CPs, depending on their structural attributes, exhibit distinct differences in the adsorption of H2, CO2, and water. The use of 2-methylpyridine instead of neocuproine does not give any oxidation products under the same reaction conditions due to the incorrect positioning of the methyl group with respect to the CuII center.

10acoordination polymers10aCopper10aN ligands10aorganicinorganic hybrid composites10apolyoxometalates1 aDey, Chandan1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/pom-catalyzed-situ-ligand-synthesis-construction-metal-complexes-and-their-use-formation-002168nas a2200241 4500008004100000022001400041245013800055210006900193260007300262300001000335490000700345520125800352653001601610653001701626653002601643653002701669653002901696653002201725100002001747700001701767700001901784856012301803 2015 eng d a1387-700300aConstruction and structural diversity of Cd-MOFs with pyrazole based flexible ligands and positional isomer of naphthalenedisulfonate0 aConstruction and structural diversity of CdMOFs with pyrazole ba aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcNOV a35-400 v613 a

In the present communication, we have reported the construction of a series of Cd(II)-MOFs using conformationally flexible ligand (CFL); 3,3',5,5'-tetramethy1-4,4'-bipyrazolyl (H(2)BPz), flexible bent ligand (FBL); methylenebis-(3,5-dimethylpyrazole) (H(2)MBPz) and positional isomer of naphthalene disulfonic acid salt ligands (1,5-NDS, 2,6-NDS). By using these ligands, four new coordination polymers namely [Cd(H(2)MBPz)(2) center dot 1,5-NDSA](n) (NDS-MOF-1), [Cd(H(2)BPz)center dot 1,5-NDSA](n) (NDS-MOF-2), {[Cd(H(2)MBPz)(2)](2+)center dot 2,6-NDSA(2-)}(n), (NDS-MOF-3) and {[Cd(H(2)BPz)(2)](2+).2,6-NDSA(n)(2-}) (NDS-MOF-4) have been synthesized. The crystal structure analysis revealed that the employment of positional isomeric naphthalene disulfonic acid salts resulted in different architectures ranging from one dimensional chain to two dimensional grid network and further connected into a three dimensional supramolecular structure through intermolecular hydrogen bonds, pi center dot center dot center dot pi and C-H center dot center dot center dot pi interactions. In addition, the photophysical properties and thermal stability studies for all the NDS-M0F5 1-4 were also investigated. (C) 2015 Elsevier B.V. All rights reserved.

10aCadmium(II)10aConformation10acoordination polymers10aNaphthalenedisulfonate10aPhotophysical properties10athermal stability1 aSingh, Udai, P.1 aSingh, Neetu1 aChandra, Suman uhttps://library.ncl.res.in/content/construction-and-structural-diversity-cd-mofs-pyrazole-based-flexible-ligands-and-201982nas a2200253 4500008004100000022001400041245016200055210006900217260007700286300001400363490000700377520097900384653002601363653001901389653002901408653001501437653002601452100002201478700002601500700002301526700002001549700003101569856012801600 2015 eng d a0947-653900aSingle crystal-to-single crystal site-selective postsynthetic metal exchange in a Zn-MOF based on semi-rigid tricarboxylic acid and access to bimetallic MOFs0 aSingle crystaltosingle crystal siteselective postsynthetic metal aBOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcFEB a2759-27650 v213 a

The metal ions in a neutral Zn-MOF constructed from tritopic triacid H3L with inherent concave features, rigid core, and peripheral flexibility are found to exist in two distinct SBUs, that is, 0D and 1D. This has allowed site-selective postsynthetic metal exchange (PSME) to be investigated and reactivities of the metal ions in two different environments in coordination polymers to be contrasted for the first time. Site-selective transmetalation of Zn ions in the discrete environment is shown to occur in a single crystal-to-single crystal (SCSC) fashion, with metal ions such as Fe3+, Ru3+, Cu2+, Co2+, etc., whereas those that are part of 1D SBU sustain structural integrity, leading to novel bimetallic MOFs, which are inaccessible by conventional approaches. To the best of our knowledge, site-selective postsynthetic exchange of an intraframework metal ion in a MOF that contains metal ions in discrete as well as polymeric SBUs is heretofore unprecedented.

10acoordination polymers10ametal-exchange10ametal-organic frameworks10aMetathesis10aX-ray crystallography1 aBajpai, Alankriti1 aChandrasekhar, Pujari1 aGovardhan, Savitha1 aBanerjee, Rahul1 aMoorthy, Jarugu, Narasimha uhttps://library.ncl.res.in/content/single-crystal-single-crystal-site-selective-postsynthetic-metal-exchange-zn-mof-based-002907nas a2200373 4500008004100000022001400041245023300055210006900288260000800357300000900365490000800374520163700382653001302019653002102032653001502053653002602068653002202094653003002116653001402146653002202160653002102182653002402203653001002227653001702237653001502254653002502269100002102294700002002315700001402335700001902349700001602368700002102384856012802405 2017 eng d a0277-538700aDirect C-N bond formation in an in situ ligand transformation reaction and formation of polymeric 1D cadmium(II) complexes with end-to-end bridging thiocyanate or selenocyanate ions: Synthesis, structures and theoretical studies0 aDirect CN bond formation in an in situ ligand transformation rea cSEP a8-150 v1333 a

Two new one-dimensional polymeric thiocyanato and selenocyanato bridged cadmium(II) complexes [Cd(dpip)(mu(1,3)-SCN)(2)](n) and [Cd(dpip)(mu(1,3)-SeCN)(2)](n), where dpip = 3,5-dimethy1-14(3-phenylimidazolidin-ly1)-methyl)-1H-pyrazole have been synthesized and characterized by elemental analysis, IR, 1H NMR and single crystal X-ray diffraction studies. The bidentate N-2-coordinated ligand dpip is formed from N-4-coor-dinated tetradentate ligand N,N-bis(3,5-dimethy1-1H-pyrazol-1-yOmethyl-N-2-phenylethane-1,2-diamine (bdpab) due to unusual transformation, removing one pyrazole group and formation of saturated imidazole ring during in situ complexation reaction. The 1D structures of the two complexes have been confirmed by single crystal X-ray diffraction studies and both NCS- and NCSe- act as end -to -end (-1,3) bridging ligands. The coordination environment around the cadmium center in the complexes are CdN4S2 and CdN4Se2, respectively and each cadmium(II) center has distorted octahedral geometry. The distortion in the molecules are due to two unequal Cd-N (organic ligand dpip) bond lengths and small bite angel of the unsymmetrical organic ligand. The DFT calculations performed with cadmium(II) complexes [Cd (dpip)(mu(1,3)-SCN)(2)](n) and [Cd(dpip)(mu(1,3)-SeCN)(2)](n) corroborated the observed crystal structures and the structural parameter were found to be in good agreement in both calculated and X-ray geometries. (C) 2017 Elsevier Ltd. All rights reserved.

10a1d Chain10aCd(Ii) Complexes10aCobalt(Ii)10acoordination polymers10aCrystal-structure10aDft Pyrazole Based Ligand10aDinuclear10aEnd-to-end Bridge10aInfrared-spectra10aMagnetic-properties10aMetal10aNcs/Secn Ion10aNickel(Ii)10aNitrogen Single Bond1 aSadhu, Mehul, H.1 aSolanki, Ankita1 aKundu, T.1 aHingu, Vinayak1 aGanguly, B.1 aKumar, Sujit, B. uhttps://library.ncl.res.in/content/direct-c-n-bond-formation-situ-ligand-transformation-reaction-and-formation-polymeric-1d