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Updated: Oct 1, 2025

Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles
Published on: August 22, 2018
Coordination chemistry of nitrile-functionalized mixed thia-aza macrocycles [9]aneN2S and [9]aneNS2 towards silver(I)
Alexander J Blake1, Vito Lippolis2, Martin Schröder1
1School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK.
Abstract:
The coordination chemistry towards silver(I) of the small-ring macrocycles [9]aneN2S (1-thia-4,7-diazacyclononane) and [9]aneNS2 (1,4-dithia-7-azacyclononane) incorporating nitrile-functionalized pendant arms is considered both in the presence and the absence of exogenous bridging ligands. The aim is to understand the influence of the number and length of the pendant arms on the nuclearity and dimensionality of the resulting complexes. The X-ray crystal structures of the complexes bis[4,7-bis(cyanomethyl)-1-thia-4,7-diazacyclononane-κ3N,N',S]silver(I) tetrafluoridoborate, [Ag(C10H16N4S)2]BF4 or [Ag(L1)2]BF4, [4,7-bis(2-cyanoethyl)-1-thia-4,7-diazacyclononane-κ3N,N',S](thiocyanato-κS)silver(I), [Ag(C12H20N4S)(NCS)] or [Ag(L2)(SCN)], and μ-thiocyanato-κ2S:S-bis{[7-(2-cyanoethyl)-1,4-dithia-7-azacyclononane-κ3N,S,S']silver(I)} tetrafluoridoborate, [Ag2(C9H16N2S2)2(SCN)]BF4 or [Ag2(L3)2(μ-SCN)]BF4, are discussed in relation to analogous compounds in the literature.
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