01423nas a2200193   4500008004100000022001400041245008200055210006900137260000900206300001600215490000700231520078600238100002101024700002201045700001901067700001501086700001801101856011001119       2020                        eng d  a0020-166900aBis(silanetellurone) with C-H center dot center dot center dot Te Interaction0 aBissilanetellurone with CH center dot center dot center dot Te I  cDEC   a17811-178210 v593 a<p>Herein, we report the synthesis of a series of bis(silanechalcogenones) [Ch = Te (2), S (3), or Se (4)] using an N-heterocyclic silylene-based SiCSi pincer ligand (1). 2 is the first example of a bis(silanetellurone) derivative. The bonding patterns of 2-4 were extensively studied by natural bond orbital, quantum theory of atoms in molecules, and noncovalent interaction index analyses, and these exhibit weak C-H center dot center dot center dot Ch interaction. The analogous reaction of 1 with trimethyl N-oxide produced a novel bis(cyclosiloxane) derivative (5). All of the complexes are duly characterized by single-crystal X-ray diffraction studies, multinuclear nuclear magnetic resonance (H-1, C-13, and Si-29) spectroscopy, and high-resolution mass spectrometry.</p>
1 aGhosh, Moushakhi1 aPanwaria, Prakash1 aTothadi, Srinu1 aDas, Aloke1 aKhan, Shabana  uhttps://library.ncl.res.in/content/bissilanetellurone-c-h-center-dot-center-dot-center-dot-te-interaction01526nas a2200169   4500008004100000022001400041245011200055210006900167260000800236300001400244490000700258520090100265100002101166700001901187700001801206856013201224       2021                        eng d  a0276-733300aCarbazole substituted amidinato silylene: synthesis, bonding, and coordination behavior with coinage metals0 aCarbazole substituted amidinato silylene synthesis bonding and c  cSEP  a3201-32100 v403 aIn this work, the synthesis and characterization of a new carbazole substituted amidinatosilylene (1) and its coinage metal complexes 3-8 are being reported. Before the complexation reactions, we prepared [PhC(N+Bu)(2)Si(Cbz)-> Co(CO)Cp] complex (2) to estimate the sigma-donating strength of the newly synthesized silylene 1. Further, several commonly available coinage metal salts were utilized for the complexation reactions with 1, which afforded complexes 3-8. The solid-state structures of 1-8 have been validated by single-crystal X-ray diffraction studies, NMR spectroscopy, and mass spectroscopy. DFT studies were also performed to understand the bonding scenario of 1 and 3-7. Of note, 1 consists of a HOMO on its carbazolide moiety, and the HOMO-1 features the silylene character. We also compared the HOMO-LUMO gap of 1 with other amidinato silylenes having different N-substitutions.1 aGhosh, Moushakhi1 aTothadi, Srinu1 aKhan, Shabana  uhttps://library.ncl.res.in/content/carbazole-substituted-amidinato-silylene-synthesis-bonding-and-coordination-behavior-coinage