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). Afterward, compositions of cumulus minerals may be modified by trapped liquids and/or post-cumulus processes ( Barnes 1986 ; Godel et al. 2011 ; Tanner et al. 2014 ). Thus, it is problematic to quantify the compositional differentiation of silicate magmas and partitioning of trace elements among co-crystallizing minerals (e.g., Tribuzio et al. 1999 ; Jang and Naslund 2001 ; Cawthorn 2007 ; Jourdan et al. 2007 ; Jakobsen et al. 2010 ). Long-standing issues regarding the petrogenesis of layered intrusions, e.g., the nature and evolution of the parental magmas in the

Electrochemical Cocrystallization Experiments with Gd2Cl3 N. B. Mikheev3, A. N. Kamenskaya3,1. A. Rumer3, V. L. Novitschenko3, A. Simon*-*5, Hj. M attauschb a Institut für Physikalische Chemie der Akademie der Wissenschaften, Leninprospect 31, Moskau, Rußland b Max-Planck-Institut für Festkörperforschung, Heisenbergstraße 1, D-W-7000 Stuttgart 80 Z. Naturforsch. 47b, 9 9 2 -9 9 4 (1992); eingegangen am 17. Januar 1992 Cluster, Electrochemical Reduction, Cocrystallization Gd2Cl3 is electrocrystallized from molten GdCl3 at 900 K with a current efficiency of 70

18-Membered Heterometallacyclic Gold(I) Compounds: Structural Influences of Co-crystallized Solvent Liliana Dobrzańskaa,b, Christoph E. Strassera, Hubert Schmidbaurc,d, and Helgard G. Raubenheimera a Department of Chemistry and Polymer Science, University of Stellenbosch, Private Bag X1, Matieland, 7602, Stellenbosch, South Africa b Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F – bus 2404, B-3001 Heverlee, Belgium c Department Chemie, Technische Universität München, 85747 Garching, Germany d Chemistry Department, King Abdulaziz

908 Zeitschrift für Kristallographie 211, 908-910 © by R. Oldenbourg Verlag. München 1996 yW-Bromo-//-phosphido-bis(tetracarbonylmanganese) and di-//-phos- phido-bis(tetracarbonylmanganese). Co-crystallization and disorder U. Flörke Universität-GH Paderborn. Anorganische und Analytische Chemie, Warburger Str. 100. D-33098 Paderborn. Germany Dedicated to Professor Otto W. Flörke on the occasion of his 70th birthday Received February 12, 1996; accepted April 15, 1996 Crystal structure I Disorder I Bis(manganese tetracarbonyl) complexes Abstract. (/t-Br)(^-PH2)Mn2

Nuclear Chemical Department, U.A.R. Atomic Energy Establishment, Inchass (Egypt) Enrichment of Rubidium by Cocrystallization with Potassium Perchlorate By L. M. Micheeva, M. El-Garhy and S. A. Abdulla' With 3 Tables (Received 11th May 1964) Abstract Cocrystallization of Rubidium with potassium Perchlorate has been investigated. It has been found that the cocrystallization coefficient remains constant by increasing the ionic strength of solution more than twice as compared to that of the pure saturated KC104 solution. This allowed to conclude that the

Chemical Constituents of Coutaportla ghiesbregthiana: Co-Crystallization of Two ent-Nor-Kaurene Diterpenes Hortensia Parra-Delgadoa, Rubén A. Toscanoa, Aı́da N. Garcı́a-Argaezb, and Mariano Martı́nez-Vázqueza a Instituto de Quı́mica, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Coyoacán C. P. 04510, México DF b Facultad de Ciencias, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Coyoacán C. P. 04510, México DF Reprint requests to Dr. Mariano Martinez-Vazquez. Fax : +(52) 55 56162203

Introduction Cocrystallization of various pairs of compounds is a wide field of research in recent days [1–4]. The importance of cocrystals has been established by a number of reports in the literature [5–9]. Formation of cocrystals of two compounds having different functional groups although seems to be trivial but experimentally not achievable often [10]. Cocrystallization experiments with a pair of solid compounds have been exercised by a number of research groups using a large number of different compounds having various functional groups to interact and form

Synthesis, crystal structure and theoretical study of ΑΙ(ΠΓ) complex with (2-(2-hydroxyphenyl)benzimidazoIate cocrystallized by DMF solvate Yi-Ping Tong'a b, and Yan-Wen Linc "Institute of Inorganic Chemistry, Hanshan Normal University, Chaozhou 521041, China *'Department of Chemistry, Hanshan Normal University, Chaozhou 521041, China cDepartment of Bio-chemistry, Hanshan Normal University, Chaozhou 521041, China ABSTRACT The aluminium(III) complex with 2-(2-hydroxyphenyl)benzimidazoIe, namely [Α12(μ-ΟΗ)2ί4)]·6ΟΜΡ·2Ηί (1-6DMF-2HL) (HL = 2-(2-hydroxyphenyl

Starting from the enantiomerically pure or racemic nucleophile 1-phenylethylamine (L) chiral cobalt complexes with the general formula [Co(Hdmg)2XL] (Hdmg = dimethylglyoximate, X = CN, NO2) were obtained as homochiral or heterochiral crystalline solids, respectively. The crystal structures of the resulting cyano and nitro complexes were determined by single crystal X-ray diffraction. The homochiral solids crystallize in space group P21 with two molecules per asymmetric unit, the racemates in P21/c with only one independent molecule. From a solution containing equimolar amounts of enantiomerically pure S-L cyano and R-L nitro complexes a stable and well-ordered binary solid could be crystallized and structurally characterized. The molecular constituents of opposite chirality are arranged in pairs in the vicinity of pseudo inversion centers forming a quasi-racemate in space group P21. The driving force for the formation of this cocrystal is discussed in terms of intermolecular geometry and energy: The crystal structures of all five complexes are similar with respect to lattice parameters and intermolecular arrangement, but comparisons based on space filling and lattice energy confirm higher packing efficiency for the racemates and the quasi-racemate than for the enantiopure compounds.

Zum Einbau von einigen Lanthaniden in Gd2Cl3 Incorporation of Some Lanthanides into Gd2Cl3 A. Simon*, Hj. Mattausch Max-Planck-Institut für Festkörperforschung. Heisenbergstraße 1, D-7000 Stuttgart 80 N. B. Mikheev Institut für Physikalische Chemie, Akademie der Wissenschaften der UdSSR, Lenin-Prospekt 31, Moskau C. Keller Schule für Kerntechnik, Kernforschungszentrum Karlsruhe GmbH, Postfach 3640, D-7500 Karlsruhe 1 Z. Naturforsch. 42b, 666-668 (1987); eingegangen am 9. Januar 1987 Lanthanides, Co-Crystallization, Radioactive Isotopes Co-crystallization