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Titolo:
Crystal structures and vibrational and solid-state (CPMAS) NMR spectroscopy of some bis(triphenylphosphine)silver(I) sulfate, selenate and phosphate systems
Autore:
Bowmaker, GA; Hanna, JV; Rickard, CEF; Lipton, AS;
Indirizzi:
Univ Auckland, Dept Chem, Auckland, New Zealand Univ Auckland Auckland New Zealand nd, Dept Chem, Auckland, New Zealand Australian Nucl Sci & Technol Org, NMR Facil, Div Mat, Menai, NSW 2234, Australia Australian Nucl Sci & Technol Org Menai NSW Australia 2234 234, Australia Battelle Mem Inst, Pacific NW Natl Labs, Environm Mol Sci Lab, Richland, WA 99352 USA Battelle Mem Inst Richland WA USA 99352 l Sci Lab, Richland, WA 99352 USA
Titolo Testata:
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
fascicolo: 1, , anno: 2001,
pagine: 20 - 28
SICI:
1472-7773(2001):1<20:CSAVAS>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
SULFURIC-ACID-SOLUTION; ABSORPTION SPECTROSCOPY; INFRARED-SPECTROSCOPY; SILVER(I) COMPLEXES; METAL-PHOSPHINE; COPPER; ADSORPTION; ELECTRODE; GOLD; PT(111);
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
51
Recensione:
Indirizzi per estratti:
Indirizzo: Bowmaker, GA Univ Auckland, Dept Chem, Private Bag 92019, Auckland, New Zealand Univ Auckland Private Bag 92019 Auckland New Zealand ealand
Citazione:
G.A. Bowmaker et al., "Crystal structures and vibrational and solid-state (CPMAS) NMR spectroscopy of some bis(triphenylphosphine)silver(I) sulfate, selenate and phosphate systems", J CHEM S DA, (1), 2001, pp. 20-28

Abstract

The crystal structures of [Ag-2(PPh3)(4)(EO4)]. 2H(2)O (E=S 1 or Se 2) showed that these contain [Ag-2(PPh3)(4)(EO4)] units with three-coordinate silver and EO42- bridging the two silver atoms via two oxygen atoms. The complexes [Ag(PPh3)(2)(HEO4)].H2O (E=S 3 or Se 4) contain [Ag(PPh3)(2)(HEO4)] molecules in which HEO4- is terminally bound to the silver atoms by a single oxygen atom. The complex [Ag(PPh3)(2)(H2PO4)]. 2EtOH 5 contains [Ag(PPh3)(2)(H2PO4)] molecules in which H2PO4- is terminally bound to the silver atom,which is essentially three-coordinate. Heteronuclear (1)J(Ag-107/109,P-31)and homonuclear (2)J(P-31,P-31) spin-spin coupling constants for these compounds were determined by analysis of their high- (9.40 T) and very high-field (17.62 T) P-31 CPMAS NMR spectra, with the aid of the 2-D P-31 CPCOSY technique, and a strong inverse correlation was found between (1)J(Ag-107/109,P-31) and the Ag-P bond length. IR and Raman studies show that the effectof a bound proton on the vibrational frequencies of EO42- is much greater than that of an attached metal atom.

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Documento generato il 25/11/20 alle ore 18:30:33