English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In order to study hydrogen bonding networks and packing arrangements, preparations and lowtemperature X-ray structures are reported for three ionic solids of general formula BH + (MeSO 2 ) 2 N − , where BH +  is 2,6-diamino-4-phenyl-1,3,5-triazin-1-ium (compound 1, tetragonal, space group P4̅2 1 c, Z = 8), 2,4,6-triamino-1,3,5-triazinium or melaminium (2, monoclinic, P2 1 /c, Z = 4), and 2,4-diamino-6-methyl-1,3,5-triazin-1-ium (3, triclinic, P1̅, Z = 2). The asymmetric units consist of cation-anion pairs that display in 1 a [DDD:AAA] three-point hydrogen bond pattern formed by two lateral N-H···O bonds and a central N + -H···N interaction, in 2 a related pattern, in which the substantial lateral offset of the ions causes the two-centre H bonds to split up into three-centre bonds, and in 3 a [DD:AA] two-point pattern formed by an N-H···N and an N + -H···O interaction. All NH donors that are not involved in the ion pairs use sulfonyl oxygen atoms and/or non-protonated nitrogen ring-atoms as acceptors to form, in 1 and 3, discrete cation-anion strands, and in 2 similar strands associated into a three-dimensional network via one independent N-H···O bond. The packing topologies of the strands may be viewed as supramolecular analogues to molecular arrangements occurring in crystalline polyaromatic hydrocarbons, viz. the sandwich-herringbone pattern in 1 (sustained by π···π stacking of the triazine rings within the sandwiches and a phenyl-phenyl C-H···π interaction between orthogonal sandwiches), the flattened or γ -type herringbone pattern in 2 (sustained by the unique N-H···O interaction of orthogonal strands), and the pseudo-graphitic β -pattern in 3. In each packing, weak C-H···A hydrogen bonds (A = O, N) originate from the activated methyl groups of the anions and act as structure-supporting links between the cation-anion strands.

zeitschrift für naturforschung b

Polysulfonylamine, CLXX [1]. Wasserstoffbrücken in kristallinen Onium-dimesylamiden: Drei Strukturen mit NH 2 -substituierten 1,3,5-Triazinium-Kationen (einschließlich Melaminium) / Polysulfonylamines, CLXX [1]. Hydrogen Bonding in Crystalline Onium Dimesylamides: Three Structures Involving NH 2 -Substituted 1,3,5-Triazinium Cations (Including Melaminium)