Triorganotin( iv ) cation-promoted dimethyl carbonate synthesis from CO 2 and methanol: solution and solid-state characterization of an unexpected diorganotin( iv )-oxo cluster
Two novel C,N-chelated organotin(IV) complexes bearing weakly coordinating carborane moieties were prepared by the reaction of the corresponding C,N-chelated organotin(IV) chloride (i.e. LCNR2SnCl, R = n-Bu (1) and Ph (2); LCN = 2-(N,N-dimethylaminomethyl)phenyl)) with monocarba-closo-dodecaborate silver salt (AgCB11H12; Ag·3). Both products of the metathesis, [LCN(n-Bu)2Sn]+[CB11H12]− (4) and [LCNPh2Sn]+ [CB11H12]− (5), respectively, were characterized by both multinuclear NMR spectroscopy and elemental analysis. The instability of 4 and 5 towards water is discussed. The solid-state structure of LCN(n-Bu)2SnOH·B(C6F5)3 (4a) as a model compound with a Sn–O(H)⋯B linkage is also reported. The…
Photochromic System among Boron Hydrides: The Hawthorne Rearrangement
Photoswitchable molecules have attracted wide interest for many applications in chemistry, physics, and materials science. In this work, we revisit the reversible photochemical and thermal rearrangements of the two B20H182– isomers reported by Hawthorne and Pilling in 1966, whose mechanism had not been understood so far. We investigate the rearrangements by means of a joint experimental and computational study with the outcome that B20H182– represents the first boron-based photochromic system ever reported. Both photochemical and thermal isomerizations occur through the same intermediate and involve a diamond–square–diamond (DSD) mechanism. Given the absence within boron chemistry of named …
CCDC 1590298: Experimental Crystal Structure Determination
Related Article: Petr Švec, Hélène Cattey, Zdeňka Růžičková, Josef Holub, Aleš Růžička, Laurent Plasseraud|2018|New J.Chem.|42|8253|doi:10.1039/C7NJ05058E
CCDC 1590299: Experimental Crystal Structure Determination
Related Article: Petr Švec, Hélène Cattey, Zdeňka Růžičková, Josef Holub, Aleš Růžička, Laurent Plasseraud|2018|New J.Chem.|42|8253|doi:10.1039/C7NJ05058E
CCDC 1590300: Experimental Crystal Structure Determination
Related Article: Petr Švec, Hélène Cattey, Zdeňka Růžičková, Josef Holub, Aleš Růžička, Laurent Plasseraud|2018|New J.Chem.|42|8253|doi:10.1039/C7NJ05058E