The X-ray crystal structure of [Mn2(µ-LL)4(NCS)2](NCS)2[LL = Ph2P(O)(CH2)3P(O)Ph2], a dinuclear complex that reversibly absorbs five molecules of sulphur dioxide

1991 ◽  
pp. 965-966 ◽  
Author(s):  
Brian Beagley ◽  
Geoffrey Dyer ◽  
Charles A. McAuliffe ◽  
Philomena P. Mac Rory ◽  
Robin G. Pritchard
Keyword(s):  
Crystal Structure ◽  
Sulphur Dioxide ◽  
Dinuclear Complex ◽  
X Ray

Diolefincobalt(0)-Komplexe / Diolefincobalt(0) Complexes

1984 ◽  
Vol 39 (5) ◽  
pp. 643-648 ◽  
Author(s):  
Hans-Friedrich Klein ◽  
Joachim Groß ◽  
Hubert Witty ◽  
Dietmar Neugebauer
Keyword(s):  
Crystal Structure ◽  
Structure Determination ◽  
Valence State ◽  
Cobalt Atom ◽  
Spectroscopic Properties ◽  
Dinuclear Complex ◽  
X Ray ◽  
Linear Dimer ◽  
Mononuclear Cobalt

Mononuclear cobalt(0) complexes containing diolefin and trimethylphosphane ligands Co(cycloocta-1,5-diene)(PMe3)2 and Co[(CH2=CHMe2Si)2O](PMe3)2 are obtained from CoCl2 by reaction with magnesium in the presence of the ligands or by substitution of cobalt(olefin)tris- (trimethylphosphane) with diolefin. Chemical and spectroscopic properties confirm the para- magnetic valence state of the compounds in solution. An X-Ray crystal structure determination of Co[(CH2=CHMe2Si)2O](PMe3)2 shows a tetrahedral arrangement of ligand functions around the cobalt atom. With butadiene a diamagnetic dinuclear complex [Co(C4H6)(PMe3)3]2 is obtained containing π-allyl co-ordination of two Co(PMe3)3 units to a linear dimer of butadiene

The synthesis and X-ray crystal structure of triiodotellurium(IV) hexafluoroarsenate(V), TeI3AsF6

1981 ◽  
Vol 59 (19) ◽  
pp. 2876-2878 ◽  
Author(s):  
Jack Passmore ◽  
George Sutherland ◽  
Peter S. White
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
Sulphur Dioxide ◽  
Space Group ◽  
X Ray ◽  
R Factor ◽  
Anion Interaction

TeI3AsF6 was prepared quantitatively from the reaction of iodine, tellurium, and arsenic pentafluoride in sulphur dioxide solution. Single crystals of TeI3AsF6 are monoclinic, a = 8.243(2), b = 10.755(2), c = 12.660(2) Å; β = 100.91(2)°, V = 1102 Å3. The structure was refined in the space group P21/c to a conventional R factor of 0.075 for 1551 independent reflections with I ≥ 2σ(I). The structure consists of essentially discrete TeI3+ cations and AsF6– anions with some cation–anion interaction. The TeI3+ cation has approximate C3v symmetry with an average Te—I distance of 2.667 Å and I—Te—I angle of 99.90°.

scholarly journals 4- and 5-Coordinate Dinuclear Copper(II) Complexes with the Tetraacetylethanediide and an N-Alkylated Diamine or a Triamine

1995 ◽  
Vol 50 (4) ◽  
pp. 536-544 ◽  
Author(s):  
Hide Kambayashi ◽  
Junko Yuzurihara ◽  
Yuichi Masuda ◽  
Hiroko Nakagawa ◽  
Wolfgang Linert ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Esr Spectra ◽  
Crystal Structure Analysis ◽  
Dinuclear Complex ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
Dinuclear Copper ◽  
X Ray ◽  
Final Agreement

Six dinuclear copper(II) complexes have been prepared, Cu2(taet)(plam)2X2 where taet = 1,1,2,2-tetraacetylethanediide, plam = N-alkylated polyamine such as tmen = N,N,N′,N′-tetramethylethylenediamine or pmdt = N,N,N′,N′,N′-pentamethyldiethylenetriamine, X = a monovalent anion such as ClO4- , NO3- or Cl-. These complexes are classified into two categories from the results of electronic spectra, IR spectra, and X-ray single crystal structure analysis as follows: (1) 4-coordinate-4-coordinate dinuclear, [Cu2(taet)(tmen)2]X2 (where X = ClO4- or NO3-), (2) 5-coordinate-5-coordinate dinuclear, [Cu2(taet)(tmen)2Cl2], and [Cu2(taet)(pmdt)2]X2 (where X = ClO4-, NO3- , or Cl- ). The crystal structure of Cu2(taet)(tmen)2(ClO4)2 · H2O (1) has been determined by the single crystal X-ray diffraction technique; monoclinic space group P21/a with a = 26.478(3), b = 8.744(1), c = 15.601(3) Å, β = 106.195(9)°, and V = 3468.9(8) Å3 for Z = 4. The final agreement factors are R = 0.097 ( Rw = 0.099). The geometry of each Cu(II) moiety in the dinuclear cation (1) is 4-coordinate square planar with a N2O2 donor set. This tmen-dinuclear complex exhibits a very weak C u (II)-Cu (II) interaction (J = -0.5 cm-1), and shows characteristic ESR spectra with seven hyperfine peaks in 1,2-dichloroethane solution at room temperature. This is not found for the corresponding pmdt-dinuclear complex. All complexes obtained in this study are very soluble in many organic solvents. The tmen-dinuclear complexes show pronounced solvatochromic behavior-dependent on the solvent donor properties. This is not found for the corresponding pmdt-dinuclears, which are stable as 5-coordinated species.

Notes. Reaction of manganese(II) arsine oxide complexes with sulphur dioxide: some unexpected products. The X-ray crystal structure of [(Ph3AsO)2H]I3

1988 ◽  
pp. 1095 ◽  
Author(s):  
Brian Beagley ◽  
Oraib El-Sayrafi ◽  
George A. Gott ◽  
David G. Kelly ◽  
Charles A. McAuliffe ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Sulphur Dioxide ◽  
X Ray
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