Abstract: The invention relates to compounds characterized by a general formula (1), wherein X is a group described by a general formula —Kp—Fl—Kq—, wherein Fl is —C(?O)—, —C(?S)—, with l being 0 or 1, Kp is a Cp-alkyl with p being 0, 1, 2, 3 or 4, Kq is a Cq-alkyl with q being 0, 1, 2, 3 or 4, and wherein n of R1n is 0, 1, 2, 3, 4 or 5, and each R1 independently from any other R1 is —C(?O)OR2, —C(?O)NR22, —C(?O)SR2, —C(?S)OR2, —C(NH)NR22, CN4H2, —NR22, —C(?O)R2, —C(?S)R2, —OR2, —SR2, —CF3, —OCF3, —SCF3, —SOCF3, —SO2CF3, —CN, —NO2, —F, —Cl, —Br or —I, with each R2 independently from any other R2 being a hydrogen or C1-C4 alkyl, and wherein OM is an organometallic compound independently selected from the group of an unsubstituted or substituted metal sandwich compound, an unsubstituted or substituted half metal sandwich compound or a metal carbonyl compound and their use in a method for treatment of infections by helminths.

Abstract: The present invention provides an improved, economical and environmentally benign process for metal complexes of acetylacetone having the general formula, M(acac)n wherein M is a metal cation selected from the group consisting of Fe, Co, Ni, Cu, Zn, Al, Ca, Mg, Mo, Ru, Re, U, Th, Ce, Na, K, Rb, Cs, V, Cr, and Mn etc., n is an integer which corresponds to the electrovalence of M, are obtained by reacting the corresponding metal hydroxide, metal hydrated oxide or metal oxide with a stoichiometric amount of acetylacetone and separating the product.

Abstract: The present invention provides an improved, economical and environmentally benign process for metal complexes of acetylacetone having the general formula, M(acac)n wherein M is a metal cation selected from the group consisting of Fe, Co, Ni, Cu, Zn, Al, Ca, Mg, Mo, Ru, Re, U, Th, Ce, Na, K, Rb, Cs, V, Cr, and Mn etc., n is an integer which corresponds to the electrovalence of M, are obtained by reacting the corresponding metal hydroxide, metal hydrated oxide or metal oxide with a stoichiometric amount of acetylacetone and separating the product.

Abstract: Neutral alpha amino diacid complexes of trace minerals and their use for animal nutrition.

Abstract: Transition metal cyclopentadienyl carbonyl compounds of the formula:[R.sub.x C.sub.p M(CO).sub.y ].sub.nwherein R is hydrocarbyl, C.sub.p is cyclopentadienyl, M is a transition metal, x is 0 or an integer from 1 to 5, y is an interger from 1 to 7, provided that when x is 2 to 5, R can represent two or more different hydrocarbyl groups and any two R groups can together form a fused ring with the cyclopentadienyl moiety, and n is 1 or 2,are prepared in one step by carbonylating a mixture of (i) a transition metal salt of an organic carboxylic acid a .beta.-diketone, or a .beta.-keto ester (ii) a cyclopentadiene compound (iii) and a metal alkyl reducing agent.

Abstract: The present invention constitutes a class of organometallic complexes which reversibly react with hydrogen to form dihydrides and processes by which these compounds can be utilized. The class includes bimetallic complexes in which two cyclopentadienyl rings are bridged together and also separately .pi.-bonded to two transition metal atoms. The transition metals are believed to bond with the hydrogen in forming the dihydride. Transition metals such as Fe, Mn or Co may be employed in the complexes although Cr constitutes the preferred metal. A multiple number of ancilliary ligands such as CO are bonded to the metal atoms in the complexes. Alkyl groups and the like may be substituted on the cyclopentadienyl rings. These organometallic compounds may be used in absorption/desorption systems and in facilitated transport membrane systems for storing and separating out H.sub.2 from mixed gas streams such as the produce gas from coal gasification processes.