01775nas a2200229   4500008004100000022001400041245016400055210006900219260007300288300000900361490000800370520088700378653001201265653001701277653001601294653001801310653002801328653002101356100002101377700002101398856012601419       2008                        eng d  a1381-116900aLacunary Keggin type polyoxotungstates in conjunction with a phase transfer catalyst: an effective catalyst system for epoxidation of alkenes with aqueous H2O20 aLacunary Keggin type polyoxotungstates in conjunction with a pha  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcOCT  a8-130 v2943 a<p>Na-9[SbW9O33] in conjunction with a phase transfer catalyst (methyl tricapryl ammonium chloride) is a highly efficient catalytic system for the selective epoxidation of alkenes with aqueous H2O2 as the oxidant. Importantly, the reactions can be carried out in the absence of any organic solvents. The alkene epoxidation reactions with both, a transition metal ion substituted polyoxotungstate as well as a transition metal ion free polyoxotungstate precursor indicates that the tungstate group is the active center for the oxidation reaction. It was also observed that the transition metal ion does not play any significant role in the reaction. IR studies support the formation of tungsten-peroxo species and also show that the catalyst is stable in the presence of phase transfer catalyst when aqueous H2O2 is used as an oxidant. (C) 2008 Elsevier B.V. All rights reserved.</p>10aalkenes10aAqueous H2O210aepoxidation10aNa-9[SbW9O33]10aPhase transfer catalyst10apolyoxometalates1 aIngle, Rohit, H.1 aRaj, N., K. Kala  uhttps://library.ncl.res.in/content/lacunary-keggin-type-polyoxotungstates-conjunction-phase-transfer-catalyst-effective-001815nas 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<p>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.</p>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-001462nas a2200193   4500008004100000022001400041245007300055210006900128260000800197490000700205520082600212653002501038653002101063653002201084653002101106653002101127100001701148856010301165       2022                        eng d  a1040-727800aPolyoxometalate clusters: inorganic ligands for functional materials0 aPolyoxometalate clusters inorganic ligands for functional materi  cSEP0 v333 a<p>
	Research in polyoxometalates (POMs) is a diverse growing field with variations in application. POMs are consisting of metal ion and oxide. Peripheral oxides of POM can share spare electron pairs to behave as ligands. This property of POM was utilized for constructing coordination polymers (CPs), synthesizing transitional metal substituted POM for catalysis, synthesizing and stabilizing nano-particles, etc. POM connected structures have provided an opportunity of heterogenization of some homogeneous POM catalyst. Furthermore, diamagnetic POM ligands have been suitable for stabilizing and isolating magnetic ions inside clusters. The scope of this review is to summarize the role of POMs as ligands to prepare POM based CPs, synthesize and stabilize metal nano-particles and isolate magnetic ion or unit.</p>
10aCoordination polymer10aInorganic ligand10amaterials science10apolyoxometalates10asynthesis design1 aDey, Chandan  uhttps://library.ncl.res.in/content/polyoxometalate-clusters-inorganic-ligands-functional-materials02418nas a2200241   4500008004100000022001400041245010900055210006900164260000900233300001100242490000800253520160500261653002101866653002101887653002601908653001001934653002101944653001601965100002501981700002202006700002102028856012702049       2026                        eng d  a2352-152X00aMolecularly engineered PW12@Polypyrrole/MXene composite for high-energy, high-rate lithium-ion capacitor0 aMolecularly engineered PW12PolypyrroleMXene composite for highen  cFEB   a1201650 v1483 a<p>
	Due to inherent differences in the charge storage mechanisms of anode and cathode in a hybrid lithium-ion capacitor (LIC), a significant kinetic balance exists, necessitating the need to improve the ion/electron transfer capability of anode materials. In this study, we have developed a ternary pseudocapacitive composite comprising redox-active phosphotungstic acid nanoclusters (PW12) anchored to polypyrrole nanofibers (PPy), which are further decorated with Ti3C2Tx MXene (PW12@PPy/Ti3C2Tx) synthesized via an in-situ polymerization strategy. Here, Ti3C2Tx MXene serves as a conductive scaffold for PW12 wrapped PPy nanofibers, promoting efficient electron/ion transport. Simultaneously, the incorporation of PW12-anchored PPy nanofibers effectively mitigates the natural tendency of MXene to restack, thus preserving its layered structure. The PW12@PPy/Ti3C2Tx hybrid composite material delivers a high specific capacity of 767 mAh g-1 at 0.1 A g-1 after 100 cycles and a promising cycling stability of 280 mAh g-1 at 1 A g-1 up to 600 cycles. Moreover, an assembled LIC device using PW12@PPy/Ti3C2Tx as anode with nitrogen-doped sucrose carbon (NSC) as cathode demonstrates the highest energy density of 125 Wh kg-1 and maximum power density of 17,058 W kg-1. The device also maintains good cycling stability of 78.4 % capacity retention after 10,000 cycles at 1 A g-1. These results highlight a promising pathway for designing MXene-based hybrid composites with enhanced lithium storage performance, effectively addressing the kinetic mismatch challenges in LIC anode applications.</p>
10aFull cell device10aLi ion diffusion10aLithium-ion capacitor10aMXene10apolyoxometalates10apolypyrrole1 aPawar, Meenakshi, D.1 aPandey, Priyanshi1 aShelke, Manjusha  uhttps://library.ncl.res.in/content/molecularly-engineered-pw12polypyrrolemxene-composite-high-energy-high-rate-lithium-ion