Maryam Shafaei-Fallah

Ion-Exchangeable Cobalt Polysulfide Chalcogel

We present a promising approach in synthetic chalcogel chemistry that is extendable to a broad variety of inorganic spacers. Polychalcogenide aerogels with ion-exchange properties are demonstrated in cobalt polysulfide. The new materials show a broad range of pore sizes and high surface area of 483 m(2)/g.

Extraordinary Selectivity of CoMo3S13 Chalcogel for C2H6 and CO2 Adsorption

or metals, [ 5 ] has recently been expanded to include the emerging new chalcogenide materials called chalcogels. [ 6–10 ] Unlike the nanocrystalline chalcogenide aerogels reported by Brock et al., [ 6 , 11 , 12 ] the chalcogels feature random amorphous networks similar to those of silica. Because of the “soft” nature of electron-rich chalcogen atoms, the polarizability of the internal surface of chalcogels is much higher than those of metal oxides, porous carbons, and organic polymers and therefore provides an entirely new medium through which to study the diffusion and separation of gases. [ 13 ] Photocatalysis, catalysis, gas separation, and removal of heavy metals with chalcogels are just some of the proposed applications that make use of the unique electronic properties (tunable bandgaps and high surface polarizability) of such high surface area materials. [ 8 ]

Aluminosilicate Relatives: Chalcogenoaluminogermanates Rb3(AlQ2)3(GeQ2)7 (Q = S, Se)

The new compounds Rb(3)(AlQ(2))(3)(GeQ(2))(7) [Q = S (1), Se (2)] feature the 3D anionic open framework [(AlQ(2))(3)(GeQ(2))(7)](3-) in which aluminum and germanium share tetrahedral coordination sites. Rb ions are located in channels formed by the connection of 8, 10, and 16 (Ge/Al)S(4) tetrahedra. The isostructural sulfur and selenium derivatives crystallize in the space group P2(1)/c. 1: a = 6.7537(3) Å, b = 37.7825(19) Å, c = 6.7515(3) Å, and β = 90.655(4)°. 2: a = 7.0580(5) Å, b = 39.419(2) Å, c = 7.0412(4) Å, β = 90.360(5)°, and Z = 2 at 190(2) K. The band gaps of the congruently melting chalcogenogermanates are 3.1 eV (1) and 2.4 eV (2).

A recipe for new organometallic polymers and oligomers? Synthesis and structure of an oligo- and a polymeric arrangement of P–S anions

A route to organometallic polymers and oligomers is described using metal complexes with P/S-ligands as examples.

Metal thiophosphonates and related compounds : an emerging area of supramolecular coordination chemistry

Nine new compounds containing PS ligands of the types [P(OtBu)S3]2-, [ArP(StBu)S2]- and [ArP(OtBu)S2]- are reported (Ar = 4-anisyl). It is demonstrated that the topology of alkali metal ion and ligand composition influence the structure of supramolecular arrangements.

Functionalised trimethylsilyl reagents in cluster synthesis: reactions of Ph2P(S)SSiMe3 with group 11 salts

A series of complexes, ranging from the small cluster 1/infinity[Ag(Ph2PS2)(dppe)](infinity) [dppe=1,2-bis(diphenylphosphino)ethane] to [Cu48S20(O(t)Bu)2(Ph2PS2)2(dppm-)4(dppm)4][dppm=1,2-bis(diphenylphosphino)methane] (the largest Cu cluster containing phosphinodithioato ligands), has been synthesised. The structural evidence presented here indicates that in these reactions initially small cyclic aggregates or one-dimensional coordination polymers are formed. The growth of these intermediates to larger aggregates can take up to several months and could proceed via cationic intermediates.

Extraordinary selectivity of CoMo 3 S 13 chalcogel for C 2 H 6 and CO 2 adsorption

or metals, [ 5 ] has recently been expanded to include the emerging new chalcogenide materials called chalcogels. [ 6–10 ] Unlike the nanocrystalline chalcogenide aerogels reported by Brock et al., [ 6 , 11 , 12 ] the chalcogels feature random amorphous networks similar to those of silica. Because of the “soft” nature of electron-rich chalcogen atoms, the polarizability of the internal surface of chalcogels is much higher than those of metal oxides, porous carbons, and organic polymers and therefore provides an entirely new medium through which to study the diffusion and separation of gases. [ 13 ] Photocatalysis, catalysis, gas separation, and removal of heavy metals with chalcogels are just some of the proposed applications that make use of the unique electronic properties (tunable bandgaps and high surface polarizability) of such high surface area materials. [ 8 ]

Extraordinary Selectivity of CoMo[subscript 3]S[subscript 13] Chalcogel for C[subscript 2]H[subscript 6] and CO[subscript 2] Adsorption

or metals, [ 5 ] has recently been expanded to include the emerging new chalcogenide materials called chalcogels. [ 6–10 ] Unlike the nanocrystalline chalcogenide aerogels reported by Brock et al., [ 6 , 11 , 12 ] the chalcogels feature random amorphous networks similar to those of silica. Because of the “soft” nature of electron-rich chalcogen atoms, the polarizability of the internal surface of chalcogels is much higher than those of metal oxides, porous carbons, and organic polymers and therefore provides an entirely new medium through which to study the diffusion and separation of gases. [ 13 ] Photocatalysis, catalysis, gas separation, and removal of heavy metals with chalcogels are just some of the proposed applications that make use of the unique electronic properties (tunable bandgaps and high surface polarizability) of such high surface area materials. [ 8 ]

Extraordinary Selectivity of CoMo3S13Chalcogel for C2H6and CO2Adsorption

or metals, [ 5 ] has recently been expanded to include the emerging new chalcogenide materials called chalcogels. [ 6–10 ] Unlike the nanocrystalline chalcogenide aerogels reported by Brock et al., [ 6 , 11 , 12 ] the chalcogels feature random amorphous networks similar to those of silica. Because of the “soft” nature of electron-rich chalcogen atoms, the polarizability of the internal surface of chalcogels is much higher than those of metal oxides, porous carbons, and organic polymers and therefore provides an entirely new medium through which to study the diffusion and separation of gases. [ 13 ] Photocatalysis, catalysis, gas separation, and removal of heavy metals with chalcogels are just some of the proposed applications that make use of the unique electronic properties (tunable bandgaps and high surface polarizability) of such high surface area materials. [ 8 ]