Single-crystal X-ray Diffraction Studies of Physisorption and Chemisorption of SO within a Metal-Organic Framework and Its Competitive Adsorption with Water.

Living on an increasingly polluted planet, the removal of toxic pollutants such as sulfur dioxide (SO) from the troposphere and power station flue gas is becoming more and more important. The CPO-27/MOF-74 family of metal-organic frameworks (MOFs) with their high densities of open metal sites is well suited for the selective adsorption of gases that, like SO, bind well to metals and have been extensively researched both practically and through computer simulations. However, until now, focus has centered upon the binding of SO to the open metal sites in this MOF (called chemisorption, where the adsorbent-adsorbate interaction is through a chemical bond).

Synthesis and Crystal Structure of the Europium(II) Hydride Oxide Iodide EuHOI Showing Blue-Green Luminescence.

As the first europium(II) hydride oxide iodide, dark red single crystals of EuHOI could be synthesized from oxygen-contaminated mixtures of EuH and EuI. Its orthorhombic crystal structure ( = 1636.97(9) pm, = 1369.

The Role of the Bi Lone Pair Effect in Bi(HO)(SO), Bi(HSO), and Bi(SO).

Three new members in the BiO-SO-HO system are identified by single crystal X-ray diffraction and Rietveld refinement after a fundamental examination of this phase space. Bi(HO)(SO) crystallizes in space group 2/ (no. 14, = 1203.

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

We report the crystal structures of two tin(IV) sulfate polymorphs Sn(SO4)2-I (2/ (no. 14), = 504.34(3), = 1065.

Strong Lewis and Brønsted Acidic Sites in the Borosulfate Mg [H O→B(SO ) ].

Borosulfates provide fascinating structures and properties that go beyond a pure analogy to silicates. Mg [H O→B(SO ) ] is the first borosulfate featuring a boron atom solely coordinated by three tetrahedra. Thus, the free Lewis acidic site forms a Lewis acid-base adduct with a water molecule.

Sr[B(SO)(SO)]: A Borosulfate with an Unprecedented Chain Structure Comprising Disulfate Groups.

Unconventional borosulfates containing S-O-S bridges are still rare. Sr[B(SO)(SO)] was synthesized solvothermally in oleum (65% SO) and crystallizes in a new structure type in space group 2/ ( = 4, = 747.0(2) pm, = 1533.

From S-O-S to B-O-S to B-O-B Bridges: Ba[B(SO)] as a Model System for the Structural Diversity in Borosulfate Chemistry.

Various different possible connection patterns of sulfate and borate tetrahedra enable a vast structural diversity in borosulfates, a rather new class of silicate-analogous compounds. Here we unravel a direct relationship from S-O-S to B-O-S to B-O-B bridges for the first time in borosulfate chemistry. Solvothermal synthesis in pure oleum (65% SO) yielded the first alkaline earth metal borosulfate comprising S-O-S bridges: Ba[B(SO)] (2/, = 4, = 1160.

Synthesis-Controlled Polymorphism and Optical Properties of Phyllosilicate-Analogous Borosulfates M[B (SO ) ] (M=Mg, Co).

Increased synthetic control in borosulfate chemistry leads to the access of various new compounds. Herein, the polymorphism of phyllosilicate-analogous borosulfates is unraveled by adjusting the oleum (65 % SO ) content. The new polymorphs β-Mg[B (SO ) ] and α-Co[B (SO ) ] both consist of similar layers of alternating borate and sulfate tetrahedra, but differ in the position of octahedrally coordinated cations.

Tb(HSO)(SO) - a green emitting hydrogensulfate sulfate with second harmonic generation response.

Recently, sulfates have attracted attention as materials for non-linear optical applications. This compound class is extended by Tb(HSO)(SO), which is solvothermally synthesised from TbO and sulfuric acid. The compound crystallises in the non-centrosymmetric space group P2 (Z = 2, a = 665.

Blue Excitement: The Lanthanide(III) Chloride Oxidomolybdates(VI) LnCl[MoO] (Ln = La, Pr, and Nd) and Their Spectroscopic Properties.

The lanthanide(III) chloride oxidomolybdates(VI) with the empirical formula LnCl[MoO] (Ln = La, Pr, and Nd) were synthesized by solid-state reactions utilizing the respective lanthanide trichloride, lanthanide sesquioxide (where available), and molybdenum trioxide together with lithium chloride as a fluxing agent. The title compounds crystallize in hexagonal space group P6/ m ( a = 942-926 pm, c = 542-533 pm, Z = 2). Besides tetracapped trigonal prismatically coordinated Ln cations, noncondensed trigonal prismatic [MoO] entities are found in the crystal structure.

RE[B(SO)] (RE = Y, La-Nd, Sm, Eu, Tb-Lu): a silicate-analogous host structure with weak coordination behaviour.

The rare earth borosulfates RE2[B2(SO4)6] with RE = Y, La-Nd, Sm, Eu and Tb-Lu were synthesised under solvothermal conditions starting from the metal chlorides (Pr, Nd, Eu), the metal oxides (Y, La, Ce, Sm, Tb, Dy, Er, Tm, Lu), or the metal powders (Ho, Yb). They crystallize isotypically with Gd2[B2(SO4)6] in space group C2/c (Z = 4, a = 1346.9(3)-1379.

Synthesis and Characterization of the First Borosulfates of Magnesium, Manganese, Cobalt, Nickel, and Zinc.

The first magnesium, manganese, cobalt, nickel, and zinc borosulfates were synthesized employing solvothermal conditions starting from the superacid H[B(HSO)] and the respective metal powders (Mg, Ni, Zn) or oxides (MnO, CoO). α- M[BO(SO)] ( M = Mg, Mn, Co, Ni, Zn) crystallize isotypically in a new structure type in P3̅ (No. 147) with Z = 1, a = 793.