Synthesis, characterization and x-ray molecular and crystal structure of Tc(NS)Cl3(Me2PhP)(Me2PhPO)-a first example of mixed phosphine/phosphine oxide coordination

1990 ◽  
Vol 169 (1) ◽  
pp. 43-48 ◽  
Author(s):  
Lenzi Kaden ◽  
Bernd Lorenz ◽  
Reinhard Kirmse ◽  
Joachim Stach ◽  
Helmut Behm ◽  
...  
1981 ◽  
Vol 36 (10) ◽  
pp. 1208-1210 ◽  
Author(s):  
Hartmut Köpf ◽  
Joachim Pickardt

Abstract The molecular structure of the bridged [1]-titanocenophane 1,1'-dimethylsilylene titanocene dichloride, (CH3)2Si(C5H4)2TiCl2, has been investigated by an X-ray structure determination. Crystal data: monoclinic, space group C2/c, Z = 4, a = 1332.9(3), 6 = 988.7(3), c = 1068.9(3) pm, β = 113.43(2)°. The results are compared with the structural dimensions of similar compounds: 1,1'-methylene titanocene dichloride, CH2(C5H4)TiCl2, with the unbridged titanocene dichloride, (C5H5)2TiCl2 and the ethylene-bridged compound (CH2)2(C5H4)2TiCl2


2020 ◽  
Vol 90 (10) ◽  
pp. 1840-1844
Author(s):  
T. V. Baulina ◽  
I. Yu. Kudryavtsev ◽  
A. V. Artem’ev ◽  
I. Yu. Bagryanskaya ◽  
M. P. Pasechnik ◽  
...  

1978 ◽  
Vol 33 (8) ◽  
pp. 838-842 ◽  
Author(s):  
H. J. Keller ◽  
W. Moroni ◽  
D. Nöthe ◽  
M. Scherz ◽  
J. Weiss

Oxidation of 5,10-dihydro-5,10-dimethylphenazine and 5,10-dihydro-5,10-diethyl-phenazine under different reaction conditions leads to several iodine containing solids. The preparation and X-ray structure of two of them, 5,10-dihydro-5,10-dimethyl-phcnaziniumtriiodide (3) and 5,10-dihydro-5,10-diethylphenaziniumtriiodido (4) are reported here.Compound 3 crystallizes in space group P21/n with lattice parameters a = 8.552(6) Å, b= 16.953(2) Å, c- 12.157(9) Å and β= 103.46(2)° with four formula units in the unit cell. The structure was refined to an R-value of 0.046 using 2387 independent reflections. The lattice constains distinct, slightly distorted triiodide ions and bent 5,10-dihydro-5,10-dimethylphenazinium radical cations. Compound 4 crystallizes in the same space group P21/n with lattice parameters a = 8.531(6) Å, b = 8.332(21) Å, c = 13.320(15) Å and β= 94.44(19)° with two formula units in the unit cell. The structure was refined to an R-value of 0.076 using 1195 independent reflections. The lattice contains strictly linear symmetrical triiodide ions and planar centrosymmetrical 5,10-dihydro-5,10-diethyl- phenazinium radical cations.


1977 ◽  
Vol 32 (1) ◽  
pp. 18-21 ◽  
Author(s):  
Manfred L. Ziegler ◽  
Bernd Nuber ◽  
Klaus Weidenhammer ◽  
Gerhard Hoch

The structure of [PCl4][VCl5] was determined from threedimensional X-ray data. The VCl5- ion is bipyramidal with almost C2v symmetry.


1990 ◽  
Vol 30 (6) ◽  
pp. 963-967 ◽  
Author(s):  
L. F. Chertanova ◽  
A. I. Yanovskii ◽  
Yu. T. Struchkov ◽  
V. F. Sopin ◽  
O. A. Rakitin ◽  
...  

1989 ◽  
Vol 44 (2) ◽  
pp. 169-174 ◽  
Author(s):  
Bruno Lunelli ◽  
Magda Monari

Abstract The crystal and molecular structure of the dithallium salt of the 1,2-dicyanim inocyclobuten-3,4-dione dianion and of 1,2-diiodocyclobuten-3,4-dione, determined by X-ray diffraction, are reported and discussed. Results of FT-IR and calorimetric measurements are also presented.


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