Syntheses and structures of some adducts of silver(I) oxyanion salts with some 2-N,O-donor-substituted pyridine bases |
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Authors: | Graham A Bowmaker Effendy Maksum Nitiatmodjo Allan H White |
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Institution: | a Department of Chemistry, University of Auckland, Private Bag 92019, Auckland, New Zealand b Chemistry M313, University of Western Australia, Crawley, WA 6009, Australia c Jurusan Kimia, FMIPA Universitas Negeri Malang, Jalan Surabaya 6, Malang 65145, Indonesia |
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Abstract: | Syntheses and room-temperature single crystal X-ray structural characterizations are recorded for a variety of silver(I) oxyanion (perchlorate, nitrate and trifluoroacetate (‘tfa’) (increasing basicity)) adducts, AgX, with a number of pyridine (‘py’) bases, L, functionalized in the 2-position with N- or O-donor groups, namely 2-amino-, 2-amino-6-methyl-, 2-aminomethyl-, 2-hydroxy-, 2-methoxy- and 2-acetyl- pyridines, ‘2np’, ‘nmp’, ‘amp’, ‘ohp’, ‘mop’, and ‘acp’. A variety of stoichiometries and associated structural types are defined: Ag(chelate)2]X, L/X = amp,acp/ClO4, XAg(chelate)2], L/X = acp/tfa, of 1:2 AgX:L stoichiometry; for 1:1 stoichiometry, although a discrete mononuclear complex (chelate)Ag(O2NO)] is defined for AgNO3: acp (1:1), all others are polymers, successive silver atoms being linked by N,N′-bridging ligands singly (L/X = 2np/ClO4 (?HAgHTAgTHAgH?), amp/ClO4, NO3 (?HTAgHTAg?) (‘H’ ≡ head, ‘T’ = tail)) or pairwise, ?L2AgX2AgL2Ag? (L/X = 2np/tfa, nmp/NO3). More complex polymeric arrays are found with L/X = ohp/NO3, tfa, where interaction with the metal takes place via the O-donor only, the py functionality being protonated, and in adducts of more complex stoichiometry AgNO3:mop (2:3) and AgNO3:2np (3:4). |
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Keywords: | X-ray crystal structures Vibrational spectroscopies Silver(I) complexes |
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