@article {4549,
	title = {Characterization of Na5P3O10 polymorphs by Na-23 MAS, Na-23 MQMAS, and P-31 MAS NMR spectroscopy},
	journal = {Inorganic Chemistry},
	volume = {38},
	number = {1},
	year = {1999},
	note = {ISI Document Delivery No.: 157MUTimes Cited: 20Cited Reference Count: 42},
	month = {Jan},
	pages = {84-92},
	type = {Article},
	abstract = {The two anhydrous polymorphs of Na5P3O10 have been characterized by Na-23 and P-31 MAS NMR spectroscopy, The Na-23 multiple-quantum (MQ) MAS NMR spectrum of the low-temperature form (phase II) displays three resonances for which the quadrupole coupling parameters and isotropic chemical shifts have been accurately determined from the MAS NMR spectra of the central transition. Thereby, discrepancies between recently reported Na-23 MQMAS spectra of this phase and the crystal structure have been clarified. The Na-23 resonances observed for the low-temperature form are assigned to the crystallographically nonequivalent Na sites in the crystal structure using point-monopole calculations of the electric-field gradient tensors. Three Na-23 resonances have also been observed for the high-temperature form (phase I), with two signals having very similar quadrupolar couplings and isotropic chemical shifts indicating similar coordination environments for the corresponding Na sites, in disagreement with the reported single-crystal structure. Point-monopole calculations of the electric-field gradient tensors based on the crystal structure fail to reproduce the experimental values. The P-31 chemical shielding anisotropies, obtained from P-31 MAS NMR spectra, show that the terminal P atoms of the P3O105- ions have a negative shielding anisotropy parameter (delta(sigma) = delta(iso) - delta(33)) in agreement with similar observations reported for diphosphates. This characteristic feature has been used in the assignment of the three P-31 resonances observed for the hexahydrate Na5P3O10. 6H(2)O.},
	keywords = {2-SPIN SYSTEMS, ANGLE-SPINNING NMR, CHEMICAL SHIELDING, CONDENSED PHOSPHATES, DIPOLAR, NUCLEAR-MAGNETIC-RESONANCE, QUADRUPOLAR NUCLEI, SODIUM TRIPHOSPHATE, SOLID-STATE, SPECTRA, TENSORS},
	isbn = {0020-1669},
	url = {<Go to ISI>://000078066900013},
	author = {Fyfe, C. A. and Altenschildesche, H. M. Z. and Skibsted, J.}
}
@article {3184,
	title = {STABILITY OF BINARY-MIXTURES - SUPERSATURATION LIMITS OF AQUEOUS ALKALI-HALIDE SOLUTIONS},
	journal = {Journal of Chemical Physics},
	volume = {100},
	number = {5},
	year = {1994},
	note = {ISI Document Delivery No.: MY349Times Cited: 20Cited Reference Count: 38},
	month = {Mar},
	pages = {3827-3842},
	type = {Article},
	abstract = {The stability of ionic binary mixtures is investigated by an integral equation method. In presenting the theory a distinction is made between primary and secondary stability criteria, and this distinction is used to clarify some misconceptions in the literature. The derived stability criteria are then applied to electrolyte solutions as well as to a simple binary mixture. In a simple mixture of hard spheres in wafer, both mechanical and material instabilities are found near the spinodal line along with evidence of long-range hydrophobic forces. Results for the electrolyte solutions indicate that salts with only large ions, such as CsI, and those with a smaller ion, such as Na+ or K+, behave differently near the spinodal line. CsI acts hydrophobicly, and appears to undergo demixing from the solvent, whereas NaCl and KCl, which bind the solvent more tightly, do not show clear signs of any such demixing, but do appear to become mechanically unstable. Finally, some recent results of Chen and Forstmann [J. Chem; Phys. 97, 3696 (1992)] are discussed and applied to the present systems.},
	keywords = {DIPOLAR, ELECTROLYTE-SOLUTIONS, equation, FLUID MIXTURES, HYPERNETTED-CHAIN APPROXIMATION, INSTABILITY, NEUTRAL HARD-SPHERES, PHASE, SEPARATION, SPINODAL CURVE},
	isbn = {0021-9606},
	url = {<Go to ISI>://A1994MY34900047},
	author = {Ursenbach, C. P. and Patey, G. N.}
}
