Crystals 2011, 1(3), 87-98; doi:10.3390/cryst1030087
Article

New Compounds with [As7]3– Clusters: Synthesis and Crystal Structures of the Zintl Phases Cs2NaAs7, Cs4ZnAs14 and Cs4CdAs14

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Received: 27 May 2011; in revised form: 16 June 2011 / Accepted: 21 June 2011 / Published: 28 June 2011
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Three new cluster compounds, Cs2NaAs7, Cs4ZnAs14, and Cs4CdAs14 were obtained from high temperature reactions. Their structures feature heptaarsenide [As7]3– anions, where the clusters in Cs4ZnAs14 and Cs4CdAs14 are dimerized by the linkers Zn and Cd, respectively. The bonding characteristics of these clusters are discussed and compared. Band structure calculation on Cs2NaAs7 suggests that this compound is a semiconductor with an energy gap of circa 1.6 eV, which is in consistent with the dark red color of the crystals.
Keywords: cluster; arsenic; Zintl compound; crystal structure
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MDPI and ACS Style

He, H.; Tyson, C.; Bobev, S. New Compounds with [As7]3– Clusters: Synthesis and Crystal Structures of the Zintl Phases Cs2NaAs7, Cs4ZnAs14 and Cs4CdAs14. Crystals 2011, 1, 87-98.

AMA Style

He H, Tyson C, Bobev S. New Compounds with [As7]3– Clusters: Synthesis and Crystal Structures of the Zintl Phases Cs2NaAs7, Cs4ZnAs14 and Cs4CdAs14. Crystals. 2011; 1(3):87-98.

Chicago/Turabian Style

He, Hua; Tyson, Chauntae; Bobev, Svilen. 2011. "New Compounds with [As7]3– Clusters: Synthesis and Crystal Structures of the Zintl Phases Cs2NaAs7, Cs4ZnAs14 and Cs4CdAs14." Crystals 1, no. 3: 87-98.

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