@article {43906, title = {Direct 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 studies}, journal = {Polyhedron}, volume = {133}, year = {2017}, month = {SEP}, pages = {8-15}, type = {Article}, abstract = {

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.

}, keywords = {1d Chain, Cd(Ii) Complexes, Cobalt(Ii), coordination polymers, Crystal-structure, Dft Pyrazole Based Ligand, Dinuclear, End-to-end Bridge, Infrared-spectra, Magnetic-properties, Metal, Ncs/Secn Ion, Nickel(Ii), Nitrogen Single Bond}, issn = {0277-5387}, doi = {10.1016/j.poly.2017.05.007}, author = {Sadhu, Mehul H. and Solanki, Ankita and Kundu, T. and Hingu, Vinayak and Ganguly, B. and Kumar, Sujit B.} } @article {43870, title = {NiZn double hydroxide nanosheet-anchored nitrogen-doped graphene enriched with the gamma-NiOOH phase as an activity modulated water oxidation electrocatalyst}, journal = {Nanoscale}, volume = {9}, year = {2017}, month = {SEP}, pages = {12590-12600}, type = {Journal Article}, chapter = {12590-12600}, abstract = {

Herein, we report a facile solvothermal process to synthesize an active electrocatalyst for the oxygen evolution reaction (OER) in an alkaline medium by anchoring nanosheets of a NiZn double hydroxide over nitrogen doped reduced graphene oxide after enriching the system with the γ-NiOOH phase. This catalyst possesses a thin, porous and open layered structure, which makes the system more efficient and accessible for a better electrochemical water oxidation reaction. Moreover, we experimentally demonstrated that incorporation of Zn via a single-step solvothermal method provides an easy approach to obtain plenty of exposed γ-NiOOH phases to make the system more viable for OER with a small overpotential of 290 mV at 10 mA cm-2 and a Tafel slope of 44 mV per decade. In addition to this, the oxophilic nature of Zn in the (Zn)Ni-LDH/N-rGO catalyst helps to improve the long-term stability of the whole system. The obtained results open up possibilities for the design of future robust OER electrocatalysts by the use of very cheap and abundant materials like Ni and Zn in place of expensive Ir and Ru in the present commercial electrocatalysts.

}, keywords = {catalysis, Efficient Electrocatalyst, kinetics, Metal, Nickel-Hydroxide, oxide, Oxygen Evolution Reaction, performance, XPS Spectra, zinc}, issn = {2040-3364}, doi = {10.1039/c7nr02225e}, author = {Nadeema, Ayasha and Dhavale, Vishal M. and Kurungot, Sreekumar} } @article {49846, title = {Diboron reagents in modern reduction chemistry: a versatile tool for reduction of various functional groups}, journal = {Advanced Synthesis \& Catalysis}, volume = {367}, year = {2025}, month = {OCT}, type = {Review}, abstract = {

Reduction of various organic functionality including aldehyde, ketone, nitro, imine, and alkyne has gained noteworthy attention due to its vast application of products in organic transformation reactions. To attempt hydrogenation several approaches have been reported by using molecular hydrogen as a reducing source. Besides, this diboron (tetrahydroxy diboron, bispinacolato diboron, neoglycolato diboron) has shown a promising and alternative approach for the reduction of the reducible functional group without using any molecular hydrogen. The ligand-free reduction approach of commercially available diboron reduces the organic compound by using water or organic solvent and metal salt making it an attractive protocol in the recent era of reduction as well as hydrogenation. Herein, we provide an extensive and collective overview of the diboron-mediated reduction approach of various organic compounds.

}, keywords = {diboron, H2, H2O/MeOH, Metal, reduction}, issn = {1615-4150}, doi = {10.1002/adsc.70066}, author = {Gavit, Amit Vinayak and Darandale, Nutan Rajendra and Surange, Sarthak Baburao and Sawant, Dinesh Nanaji} }