Synthesis and Structure of MnGe₄S₁₀·(C₆H₁₄N₂)·3H₂O:  A Novel Sulfide Framework Analogous to Zeolite Li-A(BW)

Abstract

Single crystals of Dabco−MnGS−SB1 (MnGe4S10·(C6H14N2)·3H2O) were synthesized hydrothermally in the presence of Dabco (1,4-diazabicyclo[2.2.2]octane). This material (Pna21, a = 18.367(2), b = 14.184(2), and c = 9.410(1) Å) contains [Ge4S10]4- adamantine clusters corner-linked through distorted Mn2+ centers. The alternating Mn2+ centers and [Ge4S10]4- clusters lie at the nodes of a distorted Li-A(BW) net containing elliptical 8-rings. Channels defined by these 8-rings contain the template and water molecules. The distortion of S−Mn−S from the ideal tetrahedral angles is a result of the strain associated with ring system of the framework.

Frameworks for Extended Solids: Geometrical Design Principles

“…Thus it is the 4-connected net of the nearest neighbors of -Np (52). It is the Al or MgSi framework of compounds with the SrAl and SrMgSi structures (53) (the latter is claimed to be the largest ternary structure (56). Interestingly (as mentioned above) the same composition with a diamond topology had been previously synthesized (9); this emphasizes that the composition of the building units is insu$cient to determine the topology achieved (this is, of course, a commonplace observation for aluminosilicates).…”

Syntheses, Structures, and Comprehensive NMR Spectroscopic Investigations of Hetero‐Chalcogenidometallates: The Right Mix toward Multinary Complexes

“…[26] Indeed, employment of [N,N'-Et 2 dabco] 2 + led to immediate crystallization of 3, a salt of the dimeric hexachalcogenidodistannate anion, upon addition of an equimolar mixture of solutions . This difference might be due to the rapid crystallization of 3, which leads to various arrangements of the "SnE 3 " fragments instead of the dominant formation of the thermodynamically preferred species as in 2, as was observed in a similar way for en solvates of quaternary Li + salts.…”

Open-Framework Inorganic Materials

“…For some frameworks, the arrangement of the tetrahedral [Ge 4 S 10 ] units resembles that occurring in the diamond [201,202] or blende [204] types. With manganese, a germanium sulfide [205] has been obtained with a structure analogous to that of zeolite Li-ABW ( Figure 20). Very few compounds with three-dimensional open frameworks have been prepared with tin chalcogenides.…”