823787-07-1Relevant academic research and scientific papers
(Pyrazole)silver(I) and -gold(I) complexes with strong and weak hydrogen-bonding interactions as the basis of one- or two-dimensional structures
Gallego, M. Luz,Ovejero, Paloma,Cano, Mercedes,Heras, Jose V.,Campo, Jose A.,Pinilla, Elena,Torres, M. Rosario
, p. 3089 - 3098 (2004)
New AuI/AgI complexes containing one or two substituted pyrazole ligands [Au(Hpzbp2)(PPh3)](p-CH 3C6H4SO3) [Hpzbp2 = 3,5-bis(4-n-butoxyphenyl)pyrazole] (1) and [M(HpzR2) 2]nX [Hpzbp2 M = Au, n = 1, X = p-CH 3C6H4SO3 (2), NO3 - (3); n = 2, X = 1,5-naphthalenedisulfonate (1,5nds) (4); Hpz R2 = Hpzbp2, M = Ag, n = 1, X = BF4- (5), CF3SO3- (6); HpzR2 = Hpz N02 (3,5-dimethyl-4-nitropyrazole), M = Ag, n = 1, X = BF 4- (7), CF3SO3- (8)], have been prepared and characterized. Compounds 1, 2, 5 and 8 have been proved to be useful for supramolecular assembly from their single X-ray diffraction analysis. In all cases strong hydrogen bonds maintain the cationic units bonded to their corresponding counterions. The crystal packing arrangement of 1, 2 and 5 is, however, determined by weak C-H...O/F hydrogen-bonding interactions involving the remaining O/F atoms of the counterion. By contrast, for 8 a two-dimensional layer-type polymeric network is formed by π-π (NO 2...NO2) and coordinative Ag...O interactions in which the NO2 substituent on the pyrazole is implicated. Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004.
