Go toArchive
Browse byFacets
Bookbag ( 0 )
'Melting Diagrams' in keywords
Results  11 Items
Sorted by   
Publication Year
1999 (1)
1998 (2)
1997 (1)
1996 (1)
1994 (1)
1993 (2)
1991 (1)
1989 (1)
1976 (1)
1Author    Dietrich Mootz, Klemens BartmRequires cookie*
 Title    Zur Kristallchemie von Supersäuren: Bildung und Struktur der tiefschmelzenden Addukte SbF5 * CF3S 0 3H und SbF5 * 7 HF [ 1 ] Crystal Chemistry o f Superaeids: Form ation and Structure of the Low-Melting Adducts SbF5 * C F 3 S 0 3H and S bF s-7 H F [l]  
 Abstract    The melting diagram of the superacid system SbFs-C F 3SO,H as well as of SbF5-H F has 
  Reference    Z. Naturforsch. 46b, 1659—1663 (1991); eingegangen am 15. Mai 1991 
  Published    1991 
  Keywords    Superaeids, Melting Diagrams, Crystal Structure, Fluoronium Ion 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-1659.pdf 
 Identifier    ZNB-1991-46b-1659 
 Volume    46 
2Author    H.-H Perkampus, E. SchönbergerRequires cookie*
 Title    Untersuchungen über die Wechselwirkung von Aromaten mit Antimontrichlorid, III Schmelzdiagramme der binären Systeme* Investigations about the Interaction of Aromatic Compounds with Antimony chloride, III Melting Diagrams of Binary Systems  
 Abstract    This paper presents the results of investigations of the melting diagrams for the systems durene/SbCl3, pentamethylbenzene/SbCl3, hexamethylbenzene/SbCl3, diphenyl/SbCl3, naphthalene/SbCl3, 2,3-dimethylnaphthalene/SbCl3, phenanthrene/SbCl3 and anthracene/ SbCl3; in all cases solid complexes with the composition ArH • 2 SbCl3 were formed. 
  Reference    (Z. Naturforsch. 31b, 475—479 [1976]; eingegangen am 8. Dezember 1975) 
  Published    1976 
  Keywords    Melting Diagrams, Molecular Compounds, Aromatic Compounds, Antimonytrichloride 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/31/ZNB-1976-31b-0475.pdf 
 Identifier    ZNB-1976-31b-0475 
 Volume    31 
3Author    DietrichM. Ootz, Dieter StäbenRequires cookie*
 Title    Die Hydrate von terf-Butanol: Kristallstruktur von Me3COH * 2 H20 und Me3COH * 7 H20 [ 1 ]  
 Abstract    The system /er/-butanol-water has been confirmed by X-ray powder diffraction and single­ crystal structure analysis to contain two hydrates, a dihydrate and a higher hydrate. The com ­ position o f the latter, contradictory in the literature, could be resolved in favor o f the new one o f a heptahydrate. The dihydrate (m.p. 0.7 °C) is m onoclinic with space group P2, and Z = 2 formula units per unit cell o f dim ensions a = 6.017, b = 6.055, c = 10.377 A and ß -106.60° at -150 °C. The heptahydrate (m.p. -6 °C, dec.) is orthorhombic with space group Pnma, Z = 4, a -12.589, b = 15.251 and c = 6.645 A at -150 °C. Both hydrates contain characteristic layers o f hydrogen-bonded O atom s, which in the heptahydrate are further linked into a three-di-m ensional semi-clathrate structure. 
  Reference    Z. Naturforsch. 48b, 1325—1330 (1993); eingegangen am 17. Mai 1993 
  Published    1993 
  Keywords    te/7-Butanol Hydrates, Melting Diagram, Crystal Structure, Hydrogen Bonding 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/48/ZNB-1993-48b-1325.pdf 
 Identifier    ZNB-1993-48b-1325 
 Volume    48 
4Author    Dietrich Mootz, Michael BornRequires cookie*
 Title    Niedere Hydrate von Aminen. Kristallstrukturen der Hemihydrate von Ethyl-und Diethylamin sowie des Hemi-und Monohydrats von 1-Butylamin [1] Lower Hydrates of Amines. Crystal Structures of the Hemihydrates of Ethyl-and Diethylamine and the Hemi-and M onohydrate of 1-Butylamine  
 Abstract    The melting diagrams of three systems alkylamine-water have been reexamined and the crystal structures of four lower hydrates determined for the first time. The hydrate EtNH2 -0.5 H20 , m.p. -72 °C, is triclinic with space^roup P 1 and Z = 4 formula units per unit cell of dimensions a = 5.104, b = 8.137, c = 9.394 Ä, a = 100.41, ß = 98.41 and y = 97.96° at -150°C. The O and N atoms are hydrogen-bonded into a two-dimensional array l[ON6/3] analogous to the layer of the Cdl2 structure type. The hydrate Et2NH • 0.5 H20 , m.p. -20 °C, is monoclinic with 12/a, Z = 8 , a -8.324, b = 15.090, c = 10.006 Ä and ß -103.34° at -100 °C. The O and N atoms are linked into a four-membered ring spiro chain ifON^] analogous to that in SiS2. The hydrate l-BuNH2 0.5H20 (m.p. -57 °C, monoclinic, P 2x/c, Z = 8,a = 14.994, b = 5.086, c = 16.15 A .,ß -103.45° at -81 °C) contains essentially the same hydrogen-bonded array as the hydrate EtNH,-0.5H20 (see above). l-BuNH2-H20 , the only monohydrate in­ vestigated besides the three hemihydrates (m.p. -60 °C, monoclinic, C 2/m, Z = 4, a = 9.68, b = 4.238, c = 15.58 A, ß = 94.9° at -81 °C), has also a two-dimensional H20/N H 2 partial structure, similar to a subset of the three-dimensional network of the adduct NH3 H20 of analogous composition. Z ur Bildung kristalliner Hydrate von einfachen Alkylaminen gibt es eine Reihe von z. T. schon recht frühen Untersuchungen mit allerdings nicht immer eindeutigen und widerspruchsfreien Ergebnissen. Die Bestimmung von Kristallstrukturen be­ schränkte sich bisher auf einige höhere Hydrate mit W assergehalten oberhalb denen von Pentahydra-ten. Solche wasserreichen Phasen wurden als Cla-thrathydrate oder Semiclathrate charakterisiert. Sie enthalten nämlich dreidimensional vernetzte W irtsstrukturen aus den W assermolekülen und in deren m ehr oder weniger gestörten polyedrischen H ohlräum en die fast immer auch noch H-brücken-aktiven (N -H — O und/oder O -H -N) Am in­ moleküle als Gastspezies [2]. Gegenstand der vorliegenden A rbeit sind nun erstmals K ristallstrukturen niederer Hydrate von * Sonderdruckanforderungen an Prof. Dr. D. Mootz. 
  Reference    Z. Naturforsch. 49b, 243—249 (1994); eingegangen am 27. Oktober 1993 
  Published    1994 
  Keywords    Amine Hydrates, Lower Hydrates, Melting Diagram, Crystal Structure, Hydrogen Bonding 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-0243.pdf 
 Identifier    ZNB-1994-49b-0243 
 Volume    49 
5Author    Thomas Dahlems, Dietrich Mootz, Michaela SchillingRequires cookie*
 Title    Zweidimensionales Eis und H50 2+-Ionen. Zur Bildung und Struktur tiefschmelzender molekularer und ionischer Hemi-bis Hexahydrate halogenierter Essigsäuren CCl"F3."COOH (n = 1 bis 3) [1] Two-Dimensional Ice and H 50 2+ Ions. On Formation and Structure of Low-Melting Molecular and Ionic Hemi-through Hexahydrates of Haloacetic Acids CCl"F3."COOH (n = 1 to 3) [1]  
 Abstract    Hydrate formation o f haloacetic acids CCl"F3_"COOH (n = 1, 2, 3) has been studied by D TA and tem perature-dependent X-ray powder diffraction, and evidence obtained for five phases, all melting at temperatures below ambient. The hydrates have been confirmed and further characterized by their crystal structures at -1 5 0 °C. Three lower hydrates, CC12F C O O H 0.5H -> 0 (space group P2,/c and Z = 8 formula unites per unit cell), CC1F2C 0 0 H H 20 (P2,/c, Z = 4), and CC1F2C 0 0 H -4 H 20 (P I, Z = 2), have molecular structures with the acid and water m olecules hydrogen-bonded in two-dimensional arrays. The structures of the remaining hydrates, CCl2F C O O H -6H 20 and CC13C 0 0 H -6 H 20 (sim i­ lar, but not isotypic, both P 1 and Z = 2), are ionic, as (H s0 2+)(C X 3C 0 Ö) -4 H 20 , and three-dimensional. The neutral water molecules are hydrogen-bonded in ice-like layers rare in crystal chemistry. A lso, CCl2FCOOH is established only as the second acid o f which a lower hydrate is molecular and a higher one ionic. 
  Reference    Z. Naturforsch. 51b, 536 (1996); eingegangen am 16. Oktober 1995 
  Published    1996 
  Keywords    Crystal Structure, Haloacetic Acid Hydrate, Hydrogen Bonding, Melting Diagram 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0536.pdf 
 Identifier    ZNB-1996-51b-0536 
 Volume    51 
6Author    Antje Albert, D. Ietrich, M. OotzRequires cookie*
 Title    Formation and Crystal Structures of the Hydrates of 18-Crown-6 [1]  
 Abstract    The melting diagram of the system 18-crown-6/water has been set up and the existence of four binary hydrates confirmed. Crystal structures have been determined for three of these, in addition to that for the hexahydrate already published. The hydrates are monoclinic, a tetrahydrate (previously reported as a 4.5-hydrate) with space group P2|/c and Z = 2 formula units per unit cell, an octahydrate with I2/a and Z = 4, and a dodecahydrate with P2i/n and Z= 2. In each structure the crown ether molecule has the (pseudo) D.^ conformation common for many of its complexes, and is immediately hydrogen-bonded by a group of four water molecules in a similar, characteristic pattern. In the tetrahydrate, with one of the waters disordered, the total connectivity is that of a 1D chain, while the overall structures of the octa-and dodecahydrate are 3D networks. Four of the six independent water molecules in the dodecahydrate are linked with each other into a rare 2D ice-like layer. 
  Reference    Z. Naturforsch. 52b, 615—619 (1997); received January 15 1997 
  Published    1997 
  Keywords    Crown Ether, Crystal Structure, Hydrate, Hydrogen Bonding, Melting Diagram 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0615.pdf 
 Identifier    ZNB-1997-52b-0615 
 Volume    52 
7Author    Antje Albert, Dietrich MootzRequires cookie*
 Title    8-Krone-6 und kleine Carbonsäuren. Bildung und Struktur binärer Addukte mit Ameisen-und Essigsäure sowie ternärer mit Essigsäure und Wasser 18-Crown-6 and Small Carboxylic Acids. Formation and Structure of Binary Adducts with Formic and Acetic Acid, as well as Ternary Ones with Acetic Acid and Water  
 Abstract    The melting diagrams of the binary systems 18-crown-6/formic acid and 18-crown-6/acetic acid have been set up and the crystal structures of the adducts 18C6 • 2 HCOOH (1, space group P 2 !/c with Z = 2 formula units per unit cell) and 18C6 • 2 CH 3COOH (2, C2/m, Z = 2) determined. Furthermore three ternary phases, 18C6 • CH3COOH • H20 (3, P2!/c, Z = 4) and dimorphic 18C6 • 2 C H 3COOH • 4 H 20 (high temperature form 4, P2,/n, Z = 2; low temperature form 5, P2|/n, Z = 2) have been characterized in the same way. In each structure the crown ether molecule has the (pseudo) D3d conformation common for many of its complexes. Various aspects of the intermolecular hydrogen bonding are described. 
  Reference    Z. Naturforsch. 53b, 242—248 (1998); eingegangen am 29. Oktober 1997 
  Published    1998 
  Keywords    Acetic Acid, Crown Ether, Formic Acid, Hydrate, Melting Diagram 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0242.pdf 
 Identifier    ZNB-1998-53b-0242 
 Volume    53 
8Author    Stephanie Janeda, Dietrich Mootz, HerrnRequires cookie*
 Title    Niedere Hydrate aliphatischer primärer Amine. Neue Untersuchungen zu Bildung und Struktur [1] Lower Hydrates of Aliphatic Primary Amines. New Studies of Formation and Structure [1]  
 Abstract    After earlier work in this laboratory on lower hydrates of amines, the melting diagram of the system 1 ,8-diaminooctane/water and six new crystal structures of hemi-and monohydrates of terminal primary n-alkylamines and diamines have been determined. In the hydrates 1 -PrNH2 • 0.5 H20 (space group C 2/m with Z = 4 formula units per unit cell), l-HexNH2 • 0.5 H20 (PI, Z = 2) and H2N(CH2)nNH2 • H20 with n = 4, 6, 8 (P 2x/c, Z = 4), the O and N atoms are hydrogen-bonded into a two-dimensional array analogous to the mutual coordination of cations and anions in the Cdl2 structure type: [ON6/3] ~ [CdI6/3]. In the hydrate H2N(CH2)2NH2 • H20 (C 2/c, Z = 4), the H20/N H 2 partial structure is three-dimensional but can be reduced, by neglecting the longest H bond, to an array which is again just two-dimensional and related now to the red Hgl2 structure type: [ON4y2] ~ [HgI4/2], In all the monohydrates, the arrays as defined are crosslinked by the alkylene cnains of the bifunctional amine molecules. 
  Reference    Z. Naturforsch. 53b, 1197—1202 (1998); eingegangen am 22. Mai 1998 
  Published    1998 
  Keywords    Amine Hydrates, Hydrates, Melting Diagram, Crystal Structure, Hydrogen Bonding 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-1197.pdf 
 Identifier    ZNB-1998-53b-1197 
 Volume    53 
9Author    Di, Stephanie Janeda, Dietrich MootzRequires cookie*
 Title    Di-bis Pentahydrate von fünf Alkylendiaminen. Eine Fallstudie zu ein-und zweidimensionalen Wasserpolymeren in Festkörpern [1]-to Pentahydrates of Five Alkylenediamines. A Case Study of One-and Two-Dimensional Water Polymers in Solids [1]  
 Abstract    The crystal structures of five low-melting hydrates of »-alkane-a,u;-diamines, H2N(CH2)"NH2 • x H20 , for short C" ■ x W, have been determined. As a common feature, the water molecules are mutually linked by hydrogen bonds O-H -O to form low-dimensional polymers. These are a meandering chain in C2 • 2 W (space group I 2la, Z -4 formula units per unit cell), a zig zag chain in C6 • 2 W (P 2,/c, Z = 2), a ribbon of consecutively condensed five-membered rings in C3 • 3 W (P 2,/c, Z = 4) and a layer of condensed and spiro-linked rings of varying size each in C7 • 3 W (P i, Z = 4) and C4 • 5 W (C 21c, Z = 4). Further hydrogen bonding, between the water polymers and the bifunctional amine molecules, leads to overall connectivities which are three-dimensional in each structure. 
  Reference    (Z. Naturforsch. 54b, 103—108 [1999]; eingegangen am 7. September 1998) 
  Published    1999 
  Keywords    Amine Hydrates, Hydrates, Melting Diagram, Water Polymers, Hydrogen Bonding 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-0103.pdf 
 Identifier    ZNB-1999-54b-0103 
 Volume    54 
10Author    Axel Deeg, Dietrich MootzRequires cookie*
 Title    Addukte Aromat/Chlorwasserstoff bei tiefen Temperaturen: Beiträge zu Bildung und Kristallstruktur [ 1 ] Adducts Arene/Hydrogen Chloride at Low Temperatures: C ontributions to Form ation and Crystal Structure [1]  
 Abstract    The melting diagrams o f the systems benzene-HCl, toluene-HCl and mesitylene-HCl have been established and the crystal structures o f two adducts determined. The adduct tolu ene-2 HC1, melting incongruently at -1 1 5 °C, is monoclinic with space group C 2 /c and Z = 4 formula units per unit cell; the adduct mesitylene-HCl, m .p. -6 4 °C, is orthorhom bic with space group P bca and Z = 8. The HC1 molecules are situated on both sides and one side, respectively, o f the plane o f the aromatic system and are linked to it by weak hydrogen bonds o f the type C l-H — it. 
  Reference    Z. Naturforsch. 48b, 571—5 (1993); eingegangen am 14. Dezember 1992 
  Published    1993 
  Keywords    Adducts Arene/HCl, Melting Diagrams, Crystal Structure, Hydrogen Bonding C l-H — it 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/48/ZNB-1993-48b-0571.pdf 
 Identifier    ZNB-1993-48b-0571 
 Volume    48 
11Author    D. Ietrich, M. Ootz, JörgH. OckenRequires cookie*
 Title    Das System Pyridin-Chlorwasserstoff: Bildung und Struktur kristalliner Addukte  
  Reference    Z. Naturforsch. 44b, 1239 (1989); eingegangen am 22. Mai 1989 
  Published    1989 
  Keywords    System Pyridine-Hydrogen Chloride, Melting Diagram, H ydrogen-Chloride A dducts, Poly(hydrogen Chlorides), Crystal Structure 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/44/ZNB-1989-44b-1239.pdf 
 Identifier    ZNB-1989-44b-1239 
 Volume    44