01604nas a2200109   4500008004100000245005400041210005400095520122300149100001901372700001901391856008401410       2016                        eng d00aEfficient methods for preparing silicon compounds0 aEfficient methods for preparing silicon compounds3 a<p>Efficient Methods for Preparing Silicon Compounds is a unique and valuable handbook for chemists and students involved in advanced studies of preparative chemistry in academia and industry. Organized by the various coordination numbers (from two to six) of the central silicon atom of the reported compounds, this book provides researchers with a handy and immediate reference for any compound or properties needed in the area. Edited by a renowned expert in the field, each chapter explores a different type of compound, thoroughly illustrated with useful schemes and supplemented by additional references. Knowledgeable contributors report on a broad range of compounds on which they have published and which are already used on a broad scale or have the potential to be used in the very near future to develop a new field of research or application in silicon chemistry. Includes contributions and edits from leading experts in the field Includes detailed chemical schemes and useful references for each preparative method Organized by the coordination numbers of the central silicon atom for each compound for easy navigation Serves as a go-to primer for researchers in novel compositions of silicon matter.</p>1 aSen, Sakya, S.1 aRoesky, H., W.  uhttp://library.ncl.res.in/content/efficient-methods-preparing-silicon-compounds00816nas a2200157   4500008004100000245012400041210006900165260000800234490000700242520022400249100001700473700001500490700001700505700001900522856011700541       2018                        eng d00aEasily accessible lithium compound catalyzed mild and facile hydroboration and cyanosilylation of aldehydes and ketones0 aEasily accessible lithium compound catalyzed mild and facile hyd  cAPR0 v543 aSimple and readily accessible lithium compounds such as 2,6-ditertbutyl phenolate lithium (1a), 1,1' dilithioferrocene (1b) and nacnac lithium (1c) are found to be efficient single site catalysts for hydroboration of...1 aBisai, Milan1 aDas, Tamal1 aVanka, Kumar1 aSen, Sakya, S.  uhttp://library.ncl.res.in/content/easily-accessible-lithium-compound-catalyzed-mild-and-facile-hydroboration-and01857nas a2200265   4500008004100000022001400041245009300055210006900148260000800217300001500225490000700240520100900247653002401256653002401280653000801304653002701312653001801339100001701357700002501374700001601399700001701415700001701432700001901449856012301468       2023                        eng d  a2192-650600aEnhancing diradical character of chichibabin's hydrocarbon through fluoride substitution0 aEnhancing diradical character of chichibabins hydrocarbon throug  cAUG  ae2023002730 v883 a<p>
	In this work, 5-SIDipp [SIDipp=1,3-bis(2,6-diisopropylphenyl)-imidazolin-2-ylidene] (1) derived Chichibabin's hydrocarbon with an octafluorobiphenylene spacer (3) has been reported. The addition of two equivalents of 5-SIDipp with decafluorobiphenyl in presence of BF3 gives the double C-F bond activated imidazolium salt with two tetrafluoroborate anions, 2. Further reduction of 2 gives the fluorine substituted 5-SIDipp based Chichibabin's hydrocarbon, 3. Quantum chemical calculations suggested a singlet state of 3 with a singlet-triplet energy gap (?ES-T) of 3.7 kcal mol(-1), which is substantially lower with respect to the hydrogen substituted NHC-based Chichibabin's hydrocarbons (10.7 kcal mol(-1), B3LYP). As a result, the diradical character (y) of 3 (y=0.62) is also noticeably higher than the hydrogen substituted CHs (y=0.41-0.43). The ?ES-T was found to be higher in CASSCF (22.24 kcal mol(-1)) and CASPT2 (11.17 kcal mol(-1)) for 3 and the diradical character (d) is 44.6 %.</p>
10aC-F Bond Activation10aChichibabin & PRIME10aDFT10aN-Heterocyclic carbene10as Hydrocarbon1 aKundu, Gargi1 aDash, Soumya, Ranjan1 aKumar, Ravi1 aVanka, Kumar1 aGhosh, Aryya1 aSen, Sakya, S.  uhttp://library.ncl.res.in/content/enhancing-diradical-character-chichibabins-hydrocarbon-through-fluoride-substitution