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'Hydrogen bonding' in keywords Facet   section ZfN Section B  [X]
Facet   Publication Year 1996  [X]
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1996[X]
1Author    Crystal, FrankH. Artm Anna, D. Ietrich, M. Ootz, Reinhard SchwesingerRequires cookie*
 Title    Zur Kristallchemie ungeladener Phosphazen-Basen, I [1] Strukturen zweier Hydrate und eines Acetats von Tris(dimethylamino)methyliminophosphoran  
 Abstract    C hem istry o f U ncharged Phosphazene Bases, I [ 1 ] Structures o f Two H ydrates and an A cetate o f T ris(dim ethylam ino)m ethylim inophosphorane Two hydrates and an acetate of the uncharged, very strong phosphazene base tris(dimethylamino)methyliminophosphorane, (Me2N)3P=NMe (for short Me-P]), have been characterized by their crystal structures. A monohydrate, Me-P, • H:0 , mp. 3°C, is monoclinic 
  Reference    Z. Naturforsch. 51b, 1369—1374 (1996); eingegangen am 11. März 1996 
  Published    1996 
  Keywords    Crystal Structure, Hydrate, Hydrogen Bonding, Phosphazene, Uncharged Base 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1369.pdf 
 Identifier    ZNB-1996-51b-1369 
 Volume    51 
2Author    Cl Walter, Frank, GuidoJ. ReißRequires cookie*
 Title    Spezielle Alkylammoniumhexachlorometallate, II [1] Synthese und Kristallstruktur von Bis(l,2-diammoniopropan)hexachlororhodat(III)-chlorid, [H3N-CH(CH3)-CH2-NH3]2[RhCl6]Cl Alkylammonium Hexachlorometallates, II [1] Synthesis, and Crystal Structure of Bis( 1,2-diammoniopropane) Hexachlororhodate(III) Chloride, (H3N-CH(CH3)-CH9-NH3]-,|RhCl6]  
 Abstract    Bis(1,2-diammoniopropane) hexachlororhodate(III) chloride, [H ^N -CH tCI-fO -CH i-N H ^ [RhCl6]Cl (1) has been obtained by the reaction of rhodium(III) chloride with rac-1,2-diammoniopropane dihydrochloride in hydrochloric acid solution. The quasi-ternary com ­ pound, which crystallizes in the orthorhombic space group Pbca (a -11.0007(13) A, b = 22.181(2) A, c = 14.638(2) A, V = 3571.7(7) Ä \ T = -1 2 0 °C, Z -8) contains two crystallographically independent 1,2-diammoniopropane ions beside one hexachlororhodate and one chloride ion. One of the cations shows a R/S-S/R-disorder of enantiomeric pairs in the centrosymmetric crystal lattice. The packing scheme is determined by a complex framework of hydrogen bonds. 
  Reference    Z. Naturforsch. 51b, 1459—1463 (1996); eingegangen am 9. April 1996 
  Published    1996 
  Keywords    Hexachlororhodate, Alkylammonium Salt, Crystal Structure, Hydrogen Bonding 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1459.pdf 
 Identifier    ZNB-1996-51b-1459 
 Volume    51 
3Author    Walter Frank, GuidoJ. ReißRequires cookie*
 Title    Spezielle Alkylammoniumhexachlorometallate, III [1] Synthese und Kristallstruktur von Tris(guanidinium)- hexachlororhodat(III)-monohydrat, [C(NH2)3 ]3 [RhCl6] * H20 Alkylammonium Hexachlorometallates, III [1] Synthesis, and Crystal Structure of Tris(guanidinium) Hexachlororhodate(III) Monohydrate, [C(NH2)3]3[RhCl6] * H20  
 Abstract    Tris(guanidinium) hexachlororhodate(III) monohydrate, [C(NH2)3]3[RhCl6] • H20 (1) has be­ en obtained by the reaction of rhodium(III) chloride with guanidine hydrochloride in hydrochlo­ ric acid solution. 1 crystallizes in the triclinic space group P i (o = 7.6013(9) A, b = 8.6912(10) A, c = 15.956(2) Ä, q = 93.177(10)°, ß = 101.691(10)°, 7 = 113.995(9)°, V = 931.8(2), Z = 2). Two crystallographically independent hexachlororhodate ions, three crystallographically independent guanidinium ions and one water molecule are linked by a complex framework of hydrogen bonds. 
  Reference    Z. Naturforsch. 51b, 1464—1468 (1996); eingegangen am 9. April 1996 
  Published    1996 
  Keywords    Hexachlororhodate, Guanidinium Salt, Crystal Structure, Hydrogen Bonding 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1464.pdf 
 Identifier    ZNB-1996-51b-1464 
 Volume    51 
4Author    DietrichK. Breitinger, Roman BreiterRequires cookie*
 Title      
 Abstract    ?ram-(NH4)2[R u (S 0 3)2(N H 3)4]-4 H 20 (1) (m onoclinic, P l x!n\ a = 629.8(3), b = 1000.6(2), c = 1345.7(5) pm, ß = 112.25(4)°, Z = 2; R = 0.021; R w = 0.017) is obtained as pale greenish-yellow crystals by reaction of /ra « s-[R u (S 0 3H)2(N H 3)4] (2) with aqueous ammonia, and crys­ tallization at +5 °C. The compound, when isolated, is stable at room temperature for only a few days even under inert gas, but persists under the mother liquor. In the centrosymmetric anion frö/?s-[Ru(S03)2(N H 3)4]2~ the bonds Ru-S = 230.5(1) pm are significantly longer than in the neutral complex 2 (227.6(1) pm), whereas the Ru-N bonds are the same in both com ­ plexes within experimental error (averages 214.1 and 214.0 pm). Hence, the mutual trans-influence of the sulfite ligands is weakened on protonation; the bonding of the co-ligands in c/s-position is not affected. The internal structure o f the sulfite ligand in 1 with long S-O bonds (average 151.2(5) pm) and small angles O-S-O (average 106.1(6)°) and the weakened Ru-S bond are a good match. The structure of 1 is held together by a complex network of hydrogen bonds, in which all potential hydrogen-bond donors (O H 2, N H 4+, N H 3) and accep­ tors (H 20 , S 0 3) are involved. The structural findings are reflected in the vibrational spectra. 
  Reference    Z. Naturforsch. 51b, 517 (1996); received August 25 1995 
  Published    1996 
  Keywords    Ruthenium(II) Sulfito Complex, Crystal Structure, m ws-Influence, Hydrogen Bonding 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0517.pdf 
 Identifier    ZNB-1996-51b-0517 
 Volume    51 
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 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0536.pdf 
 Identifier    ZNB-1996-51b-0536 
 Volume    51