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Supramolecular motifs in the first structures of organic carboxylate salts of 1-(diaminomethylene)thiourea (HATU).
Autorzy
Rok wydania
2009
Czasopismo
Acta Crystallographica Section C: Structural Chemistry
Numer woluminu
C65
Strony
410-413
DOI
10.1107/S0108270109026390
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The structures of the first two organic carboxylate salts of 1-(diaminomethylene)thiourea (HATU), namely 1-(diaminomethylene)thiouron-1-ium formate, C2H7N4S+.HCOO-, (I), and bis[1-(diaminomethylene)thiouron-1-ium] oxalate dihydrate, 2C2H7N4S+.C2O(4)(2-).2H2O, (II), in which the oxalate lies on a symmetry centre, possess different extended hydrogen-bonding networks with different graph-set motifs. The R(2)(2)(8) motif present in (I) does not appear in (II), but an R(2)(1)(6) motif is present in both (I) and (II). Compound (I) has a three-dimensional hydrogen-bonding network, whereas (II) has a layered structure with layers joined by hydrogen-bonding motifs that form R(4)(2)(8) patterns. This work extends the known supramolecular structural data for HATU to include these organic carboxylates in addition to the previously characterized salts with inorganic acids.
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