01487nas a2200217   4500008004100000022001400041245010000055210006900155260010200224300001300326490000800339520061100347653002000958653004600978653002301024653002401047100002301071700002301094700002101117856013101138       2014                        eng d  a0974-362600aSynthesis of fatty monoester lubricant base oil catalyzed by Fe-Zn double-metal cyanide complex0 aSynthesis of fatty monoester lubricant base oil catalyzed by FeZ  aC V RAMAN AVENUE, SADASHIVANAGAR, P B \#8005, BANGALORE 560 080, INDIAbINDIAN ACAD SCIENCEScJUL  a997-10030 v1263 a<p>Fatty monoester lubricant base oils as high as 96.7 mol% were prepared by reacting methyl oleate with long-chain alcohols viz., 2-ethyl-1-hexanol (C-8-OH), 1-decanol (C10OH) and 1-dodecanol (C12OH) in the presence of a solid Fe-Zn double-metal cyanide (DMC) complex catalyst. Unlike many other acid catalysts, DMC doesn't produce undesired ether side products. The catalyst was reusable in four recycling experiments with little loss in catalytic activity and ester yield. The long-chain esters prepared in the study have the desired physical properties for their application as lubricant base oils.</p>10aFatty monoester10aFe-Zn double-metal cyanide (DMC) catalyst10alubricant base oil10atransesterification1 aRaut, Ravindra, K.1 aShaikh, Mehejabeen1 aDarbha, Srinivas  uhttps://library.ncl.res.in/content/synthesis-fatty-monoester-lubricant-base-oil-catalyzed-fe-zn-double-metal-cyanide-complex-001528nas a2200217   4500008004100000022001400041245012200055210006900177260000900246300001400255490000700269520076700276100001901043700002301062700001901085700001701104700001601121700002401137700002201161856012701183       2019                        eng d  a1477-922600aStabilization of bis(chlorogermyliumylidene)s within bifunctional PNNP ligand frameworks and their reactivity studies0 aStabilization of bischlorogermyliumylidenes within bifunctional   cJUN   a7344-73510 v483 a<p>The diiminodiphosphine (L-im) and diaminodiphosphines (l-NH and l-NMe) with a bifunctional PNNP ligand framework have been employed to host two [GeCl](+) units leading to the formation of bis(chlorogermyliumylidene) 1-3, respectively. The synthetic route involves a 1:2 stoichiometric reaction between the PNNP ligand and GeCl(2)dioxane and the subsequent addition of two equivalents of chloride abstracting agent. Compound 1 is unstable towards coordinating solvents and Lewis bases, resulting in the displacement of the GeCl unit and the formation of rearranged products 4 and 5. However, the diaminodiphosphine coordinated Ge(ii) bis(monocation)s 2 and 3 proved to be stable and revealed their electrophilic behaviour towards the Lewis bases studied.</p>
1 aSahoo, Padmini1 aRaut, Ravindra, K.1 aMaurya, Devesh1 aKumar, Vikas1 aRani, Pooja1 aGonnade, Rajesh, G.1 aMajumdar, Moumita  uhttps://library.ncl.res.in/content/stabilization-bischlorogermyliumylidenes-within-bifunctional-pnnp-ligand-frameworks-and02060nas a2200265   4500008004100000022001400041245010900055210006900164260000900233300001400242490000700256520119300263653001701456653001601473653001801489653002501507653001501532100001801547700002301565700001701588700001501605700002001620700002201640856013201662       2021                        eng d  a1861-472800aIntramolecularly double-donor-stabilized stannylene and its coordination towards Ag(I) and Au(I) centers0 aIntramolecularly doubledonorstabilized stannylene and its coordi  cAUG   a2118-21250 v163 aThe intramolecularly double-donor-stabilized stannylene 1 has been synthesized from the salt-metathesis reaction between two equivalents of lithium pyridine ene-amide L1 and SnCl2. Compound 1 exhibits dipolar behavior when reacted with B(C6F5)(3) leading to the zwitterionic compound 2. The reaction of 1 with one equivalent and 0.5 equivalent of AgOTf (OTf=trifluoromethane sulfonate) result in the formation of a stannylene-AgOTf complex 3 and a homoleptic distannylene-silver ionic complex 4, respectively. Analogous to complex 4, the gold(I) complex 5 has been synthesized from the reaction between two equivalents of 1 and 0.5 equivalent of AuCl.SMe2/Me3SiOTf. Complex 5 is the first example of homoleptic stannylene-Au(I) ionic complex among the very scarce reports on stannylene-gold(I) coordination complexes. All compounds have been structurally characterized using single crystal X-ray crystallography. Solution-state characterization have been performed using multinuclear NMR techniques. Detailed DFT calculations on the optimized geometries 1 o, 3 o-5 o reveal the change in sp- hybridization on the pyramidal Sn(II) center upon metal coordination and their bonding overlaps.10acoordination10agold cation10ahybridization10aintramolecular donor10astannylene1 aChibde, Purva1 aRaut, Ravindra, K.1 aKumar, Vikas1 aDeb, Rahul1 aGonnade, Rajesh1 aMajumdar, Moumita  uhttps://library.ncl.res.in/content/intramolecularly-double-donor-stabilized-stannylene-and-its-coordination-towards-agi-and-aui