X - ray structure of 1, 4-bis (diphenylphosphino) butane. (Rivera, Valentina; Gómez Caraballo, Dora María; Rodulfo de Gil, Eldrys y Suárez B., Trino) Abstract C28H28P2, Mr = 426.48, monoclinic, P21/c, a = 6.134 (2), ...

X-ray structure of 6-deoxymikanokryptin, a new guaianolide from vernonia scorpiodes pers: 3-Oxo -1α, 7α, 8β,(H) -guaia-4(5), 11(13)-dien-8, 12-olide. (Gómez Caraballo, Dora María; Rivera, Valentina; Rodulfo de Gil, Eldrys; ...

Ternary semiconducting compounds with chalcopyrite - type structure. I fundamental equation and its physically acceptable solutions. (Rodulfo de Gil, Eldrys) Abstract The equation (1/4) (c/a)2 = σ2 + 2ασ - 2, which ...

X - ray structure of desacetoxysolaphyllidine, a steroid alkaloid from solanum hypomalacophyllum bitter: (22R, 23S, 25R)-22,26-epimino-3β,23-dihydroxy-5α-cholestan-4-one-ammonium acetate (1/1), C27 H45 NO3.NH4+.C2H3O2- (Gómez ...

X - ray crystal structure of trans-dichloro (hexaphenyl -1, 4,7, 10 -tetraphosphadecane) ruthhenium (II). (Rivera, Valentina; Rodulfo de Gil, Eldrys y Fontal, Bernardo) Abstract The synthesis and X- ray crystal structure ...

Phenyl-substituted cycloprpanes. II. Ethyl trans –2–Phenylcycloprpane-1- carboxylate. (Mora, Asiloé J.; Rivera, Valentina; Rodulfo de Gil, Eldrys y Alonso Amelot, Miguel) Resumen C12H14O2, Mr = 190.24, orthorhombic, ...

Phenyl substituted cycloprpanes. I. Trans - 2 - (p- Tolyl) cyclopropanoic acid. (Belkis M., Ramírez V.; Rivera, Valentina; Rodulfo de Gil, Eldrys; Alonso Amelot, Miguel y Peckerar, Sarail) Resumen C11H12O2’ Mr = ...

Scalar field spacetimes (Carot, Jaume; Collinge, Magdalena M.) Abstract Scalar field spacetimes are considered with a view towards their applications in cosmology. Some results existing in the literature are reviewed ...

Lie Groups of Conformal Motions acting on Null Orbits (Carot, Jaume; Coley, A. A.; Sintes, A. M.) Abstract Space-times admitting a 3-dimensional Lie group of conformal motions acting on null orbits containing a ...

Conformal symmetries in warped manifolds (P. S., Apostolopoulos; Carot, Jaume.) Abstract The existence of a Conformal Vector Field (CVF) is studied in the important class of warped manifolds of arbitrary dimension ...