Reactions of the dirhodium cation Rh2 4+, with triphenylphosphine and alkali metal carboxylates, dithiocarbamates and other anions
作者:R. W. Mitchell、J. D. Ruddick、G. Wilkinson
DOI:10.1039/j19710003224
日期:——
oxygen, carbon monoxide and aldehydes. In benzene solution the RhI carboxylates catalyse the homogeneous hydrogenation of alkenes and alkynes; the rates are compared with those using chlorotris(triphenylphosphine)rhodium(I). The interaction of Rh24+ with triphenylphosphine in presence of sodium diethyldithiocarbamate, mercaptobenzthiazole, pyridine-2-thiol, toluene-3-thiol, diphenylphosphorodithioic
Stringer, Michael B.; Underwood, Dennis J.; Bowie, John H., Canadian Journal of Chemistry, 1986, vol. 64, p. 764 - 768
作者:Stringer, Michael B.、Underwood, Dennis J.、Bowie, John H.、Holmes, John L.、Mommers, Alexander A.、Szulejko, Jan E.
DOI:——
日期:——
Lithium and Lead(II) Butyrates Binary System. Pure Compounds and an Intermediate Salt: From 2D to 3D Coordination Polymers
作者:F. J. Martínez Casado、M. Ramos Riesco、I. da Silva、M. I. Redondo Yélamos、A. Labrador、J. A. Rodríguez Cheda
DOI:10.1021/cg101272n
日期:2011.3.2
The binary phase diagram between lithium and lead(II) butyrates, [xLiC(3)H(7)CO(2) + (1 - x)Pb(C3H7CO2)(2)] was determined by differential scanning calorimetry, in order to investigate the formation of intermediate salts. A complex or intermediate salt (with a 1:1 stoichiometry) was found during the solution of the phase diagram. Crystals of this salt, which melt incongruently at T-fus = 443.2 K, were obtained later by crystallization. The structures of the crystal phase of both pure compounds and the intermediate salt were solved by single crystal and powder X-ray diffraction, using synchrotron radiation. Lithium and lead(II) butyrates present a monoclinic unit cell (P2(I)/c and P2(I)/m, respectively). Both pure salts show a bilayered arrangement, in a structure of 2D coordination polymers, as usually metal alkanoates do. Nevertheless, the complex forms a microporous 3D ionic network (tetragonal, I4(1)/a), very atypical in this kind of organic salts. Binary phase diagrams are proved to be a powerful tool to detect and predict the formation of intermediate crystals.