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  Syntheses and Characterization of Two Dicyanamide Compounds Containing Monovalent Cations: Hg2[N(CN)2]2 and Tl[N(CN)2]

Mann, M., Reckeweg, O., Nöthling, N., Goddard, R., & Dronskowski, R. (2018). Syntheses and Characterization of Two Dicyanamide Compounds Containing Monovalent Cations: Hg2[N(CN)2]2 and Tl[N(CN)2]. Inorganics, 6(4), 135-143. doi:10.3390/inorganics6040135.

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 Creators:
Mann, Markus1, Author
Reckeweg, Olaf1, Author
Nöthling, Nils2, Author              
Goddard, Richard2, Author              
Dronskowski, Richard1, Author              
Affiliations:
1Institute of Inorganic Chemistry, RWTH Aachen University, Aachen, Germany, ou_persistent22              
2Service Department Lehmann (EMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445625              

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Free keywords: dicyanamide; mercury; thallium; crystal structure; volume chemistry; IR spectrum; metathesis
 Abstract: Crystals of Hg2[N(CN)2]2 were grown by a slow diffusion-reaction between aqueous Hg2(NO3)2·2H2O and Na[N(CN)2]. Hg2[N(CN)2]2 adopts the triclinic space group P 1¯ (no. 2) with a = 3.7089(5), b = 6.4098(6), c = 8.150(6) Å, α = 81.575(6)°, β = 80.379(7)°, γ = 80.195(7)°, and Z = 1. Crystals of Tl[N(CN)2] were obtained from the reaction of TlBr with Ag[N(CN)2] in water. Single-crystal structure analyses evidence that Tl[N(CN)2] is isotypic to α-K[N(CN)2] and adopts the orthorhombic space group Pbcm (no. 57) with a = 8.5770(17), b = 6.4756(13), c = 7.2306(14) Å, and Z = 4. Regarding volume chemistry, the dicyanamide anion occupies ca. 44 cm3·mol−1, and so it corresponds to a large pseudohalide. The IR spectra of both compounds exhibit vibrational modes that are characteristic of the dicyanamide anion.

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Language(s): eng - English
 Dates: 2018-12-122018-12-062018-12-132018-12-18
 Publication Status: Published online
 Pages: 9
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.3390/inorganics6040135
 Degree: -

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Title: Inorganics
Source Genre: Journal
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Publ. Info: Basel, Switzerland : MDPI
Pages: - Volume / Issue: 6 (4) Sequence Number: - Start / End Page: 135 - 143 Identifier: ISSN: 2304-6740
CoNE: https://pure.mpg.de/cone/journals/resource/2304-6740