scholarly journals Synthese und Strukturanalyse des gemischten Alkalimetallorthonitrats Na3K3(NO4)2 / Synthesis and X-Ray Structure Determination of the Mixed Alkali Metal Orthonitrate Na3K3(NO4)2

1991 ◽  
Vol 46 (8) ◽  
pp. 1031-1034 ◽  
Author(s):  
Thomas Bremm ◽  
Martin Jansen
Keyword(s):  
Alkali Metal ◽  
Single Crystal ◽  
Vibrational Spectra ◽  
Structure Determination ◽  
Title Compound ◽  
Single Crystal Diffraction ◽  
Tetrahedral Geometry ◽  
X Ray ◽  
Mixed Alkali

The title compound has been characterized by X-ray powder and single crystal diffraction: Pbcn; a = 7.296(1), b = 15.997(4), c = 7.016(1) Å; Z = 4; 1514 diffractometer data, R = 0.04, Rw = 0.03. The vibrational spectra are compatible with a tetrahedral geometry of the anion.

Approaches to the total synthesis of triterpenes. VIII. The ABC + D/E approach. Synthesis and X-ray structure determination of 1β,4a β-dimethyl-7-methoxy-1α- (7′,7′-ethyleneketal-6′,6′-dimethyl-3′-ketooctyl)-3,4,4a,9,10,10aα-hexahydro- 2(l-H)phenanthrone

1982 ◽  
Vol 60 (4) ◽  
pp. 509-513 ◽  
Author(s):  
John W. ApSimon ◽  
Rick P. Sequin ◽  
Carol P. Huber
Keyword(s):  
Total Synthesis ◽  
Single Crystal ◽  
Structure Determination ◽  
Title Compound ◽  
Trimethylsilyl Ether ◽  
Synthetic Route ◽  
X Ray ◽  
Pentacyclic Triterpenes ◽  
Ongoing Work

The title compound was made following a projected synthetic route to pentacyclic triterpenes. The key step in the route is the alkylative trapping of the enolate derived from the enol trimethylsilyl ether 8. The stereochemical consequence of this reaction is confirmed by a single crystal X-ray structure determination on 4, which although of no further utility in the projected synthesis, nevertheless served as a useful template for this determination. In this way, ongoing work in a parallel series of compounds rests on a firm stereochemical footing.

Lewis-Base Adducts of Lead(II) Compounds. III. Synthesis and Structural Characterization of Mononuclear (Nitrato-O,O′)bis(1,10-phenanthroline)-(thiocyanato-N)lead(II)

1989 ◽  
Vol 42 (2) ◽  
pp. 335 ◽  
Author(s):  
LM Engelhardt ◽  
JM Patrick ◽  
AH White
Keyword(s):  
Single Crystal ◽  
Structural Characterization ◽  
Structure Determination ◽  
Title Compound ◽  
Lone Pair ◽  
Lewis Base ◽  
Lead Atom ◽  
X Ray

The isolation and single-crystal X-ray structure determination of the title compound, [(phen)2Pb(NCS)(O2NO)] is described; crystals are triclinic, P1, a 15.554(7), b 9-670(4), c 8.429(3) α 72.53(3), β 81.90(3), γ 72.88(3)� Z = 2, yielding R 0.052 for 3405 independent 'observed' reflections. The lead atom is seven-coordinate [Pb-N 2.49(1)-2.60(1) (phen), 2.89(1) (NCS); Pb-O 2.75(1), 2.89(1) �] with a large vacancy in the coordination sphere, possibly indicative of a stereochemically active lone pair.

Synthesis and Single Crystal Structure Determination of Bis(carbido)bis(μ-diphenylphosphido)heptadecacarbonyloctaruthenium-Dichloromethane (1/1), Ru8(μ6-C)(μ5-C)(μ-PPh2)2(CO)17.CH2Cl2

1993 ◽  
Vol 46 (11) ◽  
pp. 1811 ◽  
Author(s):  
CJ Adams ◽  
MI Bruce ◽  
BW Skelton ◽  
AH White
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Structure Determination ◽  
Title Compound ◽  
Room Temperature ◽  
Single Crystal Structure ◽  
Crystal Structure Determination ◽  
Triangular Face ◽  
X Ray

The synthesis and room-temperature single-crystal X-ray structure determination of the title compound are recorded. Crystals are monoclinic, P 21/c, a 14.43(2), b 18.39(1), c 23.64(3) Ǻ, β 123.16(7)°, Z = 4, isostructural with the recently described Fe3Ru5 analogue; R was 0.048 for 6892 'observed' data [I > 3σ(I)]. The cluster is one of the few containing separated carbide ligands within a polyhedral metal skeleton, consisting of an Ru5C square pyramid and an Ru6C octahedron sharing a triangular face, with two PPh2 groups bridging opposite Ru-Ru vectors in each polyhedron.

Synthesis and Structure of (1,8-Diammonio-3,6,10,13,16,19-hexaazabicyclo[6.6.6]icosane)-nickel(II) Tetrachloride Monohydrate

1993 ◽  
Vol 46 (1) ◽  
pp. 127 ◽  
Author(s):  
LM Engelhardt ◽  
JM Harrowfield ◽  
AM Sargeson ◽  
AH White
Keyword(s):  
Hydrogen Bonding ◽  
Single Crystal ◽  
Structure Determination ◽  
Title Compound ◽  
Narrow Range ◽  
Crystal Packing ◽  
The Other ◽  
X Ray ◽  
The Mean

The synthesis and single-crystal X-ray structure determination of the title compound are described. Crystals are monoclinic, P 21, a 16.164(9), b 8.277(3), c 8.829(4) Ǻ, β 102.86(4)°, Z 2; 2666 independent 'observed' diffractometer data [I > 3σ(I)] were refined to a residual of 0.045. The cation is unusual amongst complexes of sarcophagine (3,6,10,13,16,19-hexaazabicyclo[6.6.6]icosane) cage amines in adopting a lel2ob conformation, seemingly in response to hydrogen bonding/crystal packing forces. In consequence, unlike the tetranitrate analogue in which Ni-N bond distances are dispersed over a narrow range (2.097(5)-2.119(5) Ǻ; mean 2.109 Ǻ], the coordination sphere is more distorted with one pair of Ni-N distances, cis to each other, being short at 2.081(5) and 2.086(5) Ǻ, while the other four are long, ranging from 2.116(5) to 2.135(5) Ǻ, the mean of this array being 2.111 Ǻ.

Einkristallzüchtung und Röntgenstrukturanalyse der Fluoridcarbonate K3CO3F und Rb3CO3F / Crystal Growth and X-Ray Structure Determination of the Fluoride Carbonates K3CO3F and Rb3CO3F

1990 ◽  
Vol 45 (7) ◽  
pp. 943-946 ◽  
Author(s):  
Joachim Arlt ◽  
Martin Jansen
Keyword(s):  
Crystal Growth ◽  
Single Crystal ◽  
Structure Determination ◽  
Single Crystal Diffraction ◽  
X Ray

The isostructural title compounds have been characterized by X-ray powder and single crystal diffraction: R 3̅ c; Z = 6; a = 741.81(4), c = 1639.18(9) pm; 389 diffractometer data, R = 0.04, Rw = 0.03 (K3CO3F); α = 776.1(3), c = 1741.2(9) pm; 235 diffractometer data, R = 0.07, R = 0.06 (Rb3CO3F). Both compounds are carbonate fluorides with isolated CO32- and F- anions.

About alkali metal dicyanamides: syntheses, single-crystal structure determination, DSC/TG and vibrational spectra of KCs[N(CN)2]2 and NaRb2[N(CN)2]3 · H2O

2015 ◽  
Vol 70 (6) ◽  
pp. 365-372 ◽  
Author(s):  
Olaf Reckeweg ◽  
Ryo H. Wakabayashi ◽  
Francis J. DiSalvo ◽  
Armin Schulz ◽  
Christof Schneck ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Alkali Metal ◽  
Aqueous Solutions ◽  
Single Crystal ◽  
Powder Diffraction ◽  
Vibrational Spectra ◽  
Structure Determination ◽  
Space Group ◽  
X Ray ◽  
Cell Parameters

AbstractTransparent colorless crystals of KCs[N(CN)2]2 and NaRb2[N(CN)2]3 · H2O were obtained by blending aqueous solutions of Na[N(CN)2] and RbF or KF, respectively. After evaporation of the water, the remaining solid was extracted with absolute ethanol and the solvent was allowed to evaporate at r. t.. KCs[N(CN)2]2 crystallizes in the space group C2/c (no. 15) with the cell parameters a = 1382.7(2), b = 998.1(1) and c = 1455.4(2) pm, and β = 118.085(4) °. The structure of NaRb2[N(CN)2]3 · H2O is exhibiting the space group P63/m (no. 176) with the cell parameters a = 705.98(7) and c = 1462.89(12) pm. Single-crystalline α-K[N(CN)2] was obtained while attempting to synthesize ‘NaK2[N(CN)2]3’, corroborating the results of previous X-ray powder diffraction experiments. Vibrational spectra and DSC/TGA analyses complete our results.

scholarly journals Semicobaltate -Alkalimetall-Träger in Kohlenwasserstoffen Darstellung, Eigenschaften und Struktur von K[Co(C2H4)(PMe3)3]2 / Semicobaltates -Alkali Metal Carriers in Hydrocarbons Synthesis, Properties, and Structure of K[Co(C2H4)(PMe3)3]2

1980 ◽  
Vol 35 (5) ◽  
pp. 614-619 ◽  
Author(s):  
Hans-Friedrich Klein ◽  
Joachim Groß ◽  
Jean-Marie Bassett ◽  
Ulrich Schubert
Keyword(s):  
Crystal Structure ◽  
Alkali Metal ◽  
Structure Determination ◽  
Title Compound ◽  
Unit Cell ◽  
X Ray ◽  
Hydrocarbon Solvents ◽  
Synthesis Properties ◽  
Hydrocarbons Synthesis

Abstract Semicobaltates (Co-1/2) containing olefin and trimethylphosphane ligands are synthe-sized from Co(olefin)(PMe3)3 and potassium metal. The X-ray crystal structure determination of the title compound shows that the unit cell contains two K atoms in equal ionic contact with the ethylene ligands of four Co(C2H4)(PMe3)3 complex units, two of which are interacting with both K atoms. In solution the semicobaltates exist in hydrocarbon solvents under argon only, while in contrast under ethylene or nitrogen atmospheres or in donor solvents disproportionation occurs to give Co(O) and Co(-I) species. Allgemeines

Synthesis and X-Ray Structural Characterization of the 1:1 Adduct of Bismuth(III) With the 'saltren' Anion ['saltren' ≡ N(CH2CH2N=CHC6H4OH)3]: A Novel Seven-Coordinate Bismuth(III) Complex

1994 ◽  
Vol 47 (9) ◽  
pp. 1799 ◽  
Author(s):  
PK Bharadwaj ◽  
AM Lee ◽  
S Mandal ◽  
BW Skelton ◽  
AH White
Keyword(s):  
Single Crystal ◽  
Structural Characterization ◽  
Structure Determination ◽  
Title Compound ◽  
X Ray

The synthesis and single-crystal X-ray structure determination of the title compound are recorded; crystals are monoclinic, P 21/c, a 10.309(8), b 18.817(7), c 15.542(6) Ǻ, β 121.80(5)°, Z 4; R was 0.038 for 2894 independent, 'observed' [I > 3σ(I)] reflections. The molecule has quasi-3 symmetry, with seven-coordinate bismuth [Bi-N(apical), 2.82(1); Bi-N, 2.512(8)-2.563(9); Bi-O, 2.197(8)-2.300(8)Ǻ].

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