The tin sulfates Sn(SO₄)₂ and Sn2(SO4)3: crystal structures, optical and thermal properties

Abstract

We report the crystal structures of two tin(IV) sulfate polymorphs Sn(SO4)2-I (P21/c (No. 14), a = 504.34(3), b = 1065.43(6), c = 1065.47(6) pm, β = 91.991(2)°, 4617 independent reflections,...

Oxidation-enabled SnS conversion to two-dimensional porous SnO2 flakes towards NO2 gas sensing

“…This is consistent with the thermolysis temperature reported for Sn (SO 4 ) 2 . 37 The disappearance of S 2p signals from either S 2− or SO 4 2− in the XPS spectra for the products obtained at 800 and 1000 °C (Fig. 3d and e) indicates the complete oxidation or decomposition of SnS 2 and Sn(SO 4 ) 2 .…”

“…The thermolysis of Sn(SO 4 ) 2 to SnO 2 can be expressed as reaction (5). 37 The observation of an obvious exothermic peak at 711 °C in DSC is a proof for the decomposition of Sn(SO 4 ) 2 . This is consistent with the thermolysis temperature reported for Sn (SO 4 ) 2 .…”

Synthesis and crystal structure of Ge(SO4)2

“…While the number of representatives with three‐valent cations is still quite high, [6] sulphates of tetravalent cations are rare. To our knowledge, the only examples are Zr(SO 4 ) 2 , [7] Hf(SO 4 ) 2 , [8] Ce(SO 4 ) 2 [9] and the very recently described Sn(SO 4 ) 2 [10] . An important reason for this situation is the problem of lattice energy in the combination of a highly charged cation with a polyatomic anion of lower charge (and therefore charge density) and quite large anionic radius (SO 4 2− : 258 pm [11] ).…”

“…To our knowledge, the only examples are Zr(SO 4 ) 2 , [7] Hf(SO 4 ) 2 , [8] Ce(SO 4 ) 2 [9] and the very recently described Sn(SO 4 ) 2 . [10] An important reason for this situation is the problem of lattice energy in the combination of a highly charged cation with a polyatomic anion of lower charge (and therefore charge density) and quite large anionic radius (SO 4 2À : 258 pm [11] ). The ternary compounds of group 4 elements with M 4 + /O/S may illustrate the situation.…”

Thermogravimetric/Thermal–Mass Spectroscopy Insight into Oxidation Propensity of Various Mechanochemically Made Kesterite Cu2ZnSnS4 Nanopowders

“…The homovalent tin sulfates, Sn(II)SO 4 [ 25 ] and Sn(IV)(SO 4 ) 2 [ 26 ], and heterovalent Sn(II)Sn(IV)(SO 4 ) 3 [ 26 ] are the rare examples of crystalline tin compounds in the system Sn-S-O. Especially, the Sn(IV)-containing sulfates require skillful preparations and handling because they are subject to easy hydrolysis and colloidal SnO 2 •nH 2 O and H 2 SO 4 formation [ 27 ].…”