@article {4467, title = {Synthesis and X-ray structural characterization of the ruthenium beta-diketonato complexes: Ru(hfac)(3), cis-Ru(hfac)(2)(MeCN)(2), and cis-Ru(hfac)(acac)(MeCN)(2)}, journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie}, volume = {77}, number = {11}, year = {1999}, note = {ISI Document Delivery No.: 253FETimes Cited: 12Cited Reference Count: 40}, month = {Nov}, pages = {1821-1833}, type = {Article}, abstract = {{Ru(hfac)(3) (2) was synthesized via peroxide oxidation of the Ru(II) species [Na][Ru(hfac)(3)] (1) (hfac = 1,1,1,5,5,5-hexafluoroacetylacetonate). Treatment of either 1 or 2 with CF3SO3H in MeCN generated cis-Ru(hfac)(2)(MeCN)(2) (3). Ru(acac)(2)(hfac) (4) (acac = acetylacetonate) was generated by addition of hfac to an EtOH solution of cis-[Ru(acac)(2)(MeCN)(2)] [CF3SO3]. Subsequent treatment of 4 with CF3SO3H in MeCN yielded cis-Ru(acac)(hfac)(MeCN)(2) (7). Syntheses of [Na][Ru(hfac)(2)(acac)] (5) and Ru(hfac)(2)(acac) (6) are also reported. The complexes were characterized generally by elemental analysis, cyclic voltammetry, UV-vis, NMR, and IR spectroscopies. The structures of 2,3, and 7 were established by X-ray crystallographic analyses. Crystals of 2 are monoclinic with a = 8.7781(4)}, keywords = {1, 2 KINDS, 5, 5-hexafluoroacetylacetonate acetonitrile complexes, ACETONITRILE, acetylacetonate, beta-diketonato complexes, BLUE, CRYSTAL-STRUCTURES, ELECTROCHEMICAL, HALF-WAVE POTENTIALS, MIXED-LIGAND RUTHENIUM(III), PROPERTIES, RADIOSENSITIZING ACTIVITY, ruthenium, SOLUTION, SOLUTION CHEMISTRY, TRIS(BETA-DIKETONATO)RUTHENIUM(III) COMPLEXES}, isbn = {0008-4042}, url = {://000083545300016}, author = {Baird, I. R. and Rettig, S. J. and James, Brian R. and Skov, K. A.} } @article {3723, title = {Normalized fluctuations, H2O vs n-hexane: Site-correlated percolation}, journal = {Journal of Chemical Physics}, volume = {105}, number = {5}, year = {1996}, note = {ISI Document Delivery No.: UZ525Times Cited: 20Cited Reference Count: 49}, month = {Aug}, pages = {2028-2033}, type = {Article}, abstract = {Entropy, volume and the cross fluctuations were normalized to the average volume of a coarse grain with a fixed number of molecules, within which the local and instantaneous value of interest is evaluated. Comparisons were made between liquid H2O and n-hexane in the range from -10 degrees C to 120 degrees C and from 0.1 MPa to 500 MPa. The difference between H2O and n-hexane in temperature and pressure dependencies of these normalized fluctuations was explained in terms of the site-correlated percolation theory for H2O. In particular, the temperature increase was confirmed to reduce the hydrogen bond probability, while the pressure appeared to have little effect on the hydrogen bond probability. According to the Le Chatelier principle, however, the putative formation of {\textquoteright}{\textquoteright}ice-like{\textquoteright}{\textquoteright} patches at low temperatures due to the site-correlated percolation requirement is retarded by pressure increases. Thus, only in the limited region of low pressure (<300 MPa) and temperature (<60 degrees C), the fluctuating ice-like patches are considered to persist. (C) 1996 American Institute of Physics.}, keywords = {2 KINDS, AQUEOUS 2-BUTOXYETHANOL, density, H-BONDS, HEAVY-WATER, LIQUID WATER, mixing, MOLECULAR-DYNAMICS, pressure, SCHEME, TEMPERATURES}, isbn = {0021-9606}, url = {://A1996UZ52500029}, author = {Koga,Yoshikata and Westh, P. and Sawamura, S. and Taniguchi, Y.} }