Crystallochemistry of mercury chalcogenides. IV. Crystalline structure of two polymorphous modifications of the mercury sulfochalcogenide Hg3S2Br1.5Cl0.5

Pb3SBrI3: the first Pb-based chalcohalide with multiple halogens features a unique two-dimensional structure composed of diverse Pb-centered polyhedra

“…Hitherto, few chalcohalides with multiple-halogens have been reported, that is, Hg 5 Ag 4 S 5 (I/Br) 2 Cl 2 , 54 Hg 3 S 2 Br 1.5 Cl 0.5 , 55 Hg 3 S 2 Br 0.5 Cl 1.5 , 56 Hg 3 S 2 Br 1.5 I 0.5 , 57 Hg 6 S 4 IBr 2 Cl, 58 and Pb 4 As 2 S 6 ICl, 49 and there is only one Pb-based halogen among them. They all display 3D frameworks with multiple M-centered units (M = Hg, Pb), and the S/X (X = Cl, Br, I) ratios of them are 5 : 4, 1 : 1 and 3 : 1, respectively.…”

Designing complex Pb3SBrxI4−x chalcohalides: tunable emission semiconductors through halide-mixing

“…1). 25 The low dimensionality of Pb 3 SBrI 3 makes it unique among other mixed-halide chalcohalide compositions, 25,26 as these features may be suggestive of anisotropic optical properties that are worth exploring in more detail. 27,28 Furthermore, based on similarities with related quaternary chalcohalides, such as Pb 2 SbS 2 I 3 , we hypothesized that Pb 3 SBrI 3 and other mixedhalide compositions may be accessible using a thiocyanatebased solution-phase synthesis.…”

Etude expérimentale et théorique d’un nouveau composé halogène pnicture Hg 12 Sb 6 (Br 5,Kheit1, Merazka2, Kars3 et al. 2022Comptes Rendus. Chimie0000View full textAdd to dashboardCite

“…w ) all (%) 0,1554/0,1024 ∆ρ max ∆ρ min (e − /Å 3 ) 3,09/−2,77 les six (06) positions de manière statistique (s.o.f : I > Br), comme déjà observés dans quelques composés sulfohalogénures de mercure[21,22]. En fin d'affinement, la fraction en volume des composants est de : 0,519 (3) : 0,481 (3), et la carte de densité électronique est de :…”