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Templated Synthesis of the Novel Layered Silver−Antimony Sulfides [H 3 NCH 2 CH 2 NH 2 ][Ag 2 SbS 3 ] and [H 3 NCH 2 CH 2 NH 2 ] 2 [Ag 5 Sb 3 S 8 ]

2003; American Chemical Society; Volume: 42; Issue: 24 Linguagem: Inglês

10.1021/ic034926u

1520-510X

Paz Vaqueiro, Ann M. Chippindale, A.R. Cowley, Anthony V. Powell,

Organometallic Compounds Synthesis and Characterization

Two new silver-antimony sulfides, [C(2)H(9)N(2)][Ag(2)SbS(3)] (1) and [C(2)H(9)N(2)](2)[Ag(5)Sb(3)S(8)] (2), have been prepared solvothermally in the presence of ethylenediamine and characterized by single-crystal X-ray diffraction, thermogravimetry, and elemental analysis. Compound 1 crystallizes in the space group Pn (a = 6.1781(1) A, b =11.9491(3) A, c = 6.9239(2) A, beta =111.164(1) degrees ) and 2 in the space group Pm (a = 6.2215(2) A, b = 15.7707(7) A, c = 11.6478(5) A, beta = 92.645(2) degrees ). The structure of 1 consists of chains of fused five-membered Ag(2)SbS(2) rings linked to form layers, between which the template molecules reside. Compound 2 contains honeycomb-like sheets of fused silver-antimony-sulfide six-membered rings linked to form double layers. The idealized structure can be considered to be an ordered defect derivative of that of lithium bismuthide, Li(3)Bi, and represents a new solid-state structure type.