Premium
(Pyrazole)silver( I ) and ‐gold( I ) Complexes with Strong and Weak Hydrogen‐Bonding Interactions as the Basis of One‐ or Two‐Dimensional Structures
Author(s) -
Gallego M. Luz,
Ovejero Paloma,
Cano Mercedes,
Heras José V.,
Campo José A.,
Pinilla Elena,
Torres M. Rosario
Publication year - 2004
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200300947
Subject(s) - chemistry , pyrazole , cationic polymerization , hydrogen bond , counterion , crystallography , supramolecular chemistry , substituent , stereochemistry , crystal structure , molecule , ion , organic chemistry
New Au I /Ag I complexes containing one or two substituted pyrazole ligands [Au(Hpz bp2 )(PPh 3 )]( p ‐CH 3 C 6 H 4 SO 3 ) [Hpz bp2 = 3,5‐bis(4‐ n ‐butoxyphenyl)pyrazole] ( 1 ) and [M(Hpz R2 ) 2 ] n X [Hpz R2 = Hpz bp2 , M = Au, n = 1, X = p ‐CH 3 C 6 H 4 SO 3 ( 2 ), NO 3 − ( 3 ); n = 2, X = 1,5‐naphthalenedisulfonate (1,5nds) ( 4 ); Hpz R2 = Hpz bp2 , M = Ag, n = 1, X = BF 4 − ( 5 ), CF 3 SO 3 − ( 6 ); Hpz R2 = Hpz NO2 (3,5‐dimethyl‐4‐nitropyrazole), M = Ag, n = 1, X = BF 4 − ( 7 ), CF 3 SO 3 − ( 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 ··· NO 2 ) and coordinative Ag ··· O interactions in which the NO 2 substituent on the pyrazole is implicated. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)