Osmium-carbonyl complexes of naphthylazoimidazoles. Single crystal X-ray structure of [Os(H)(CO)(PPh3)2(α-NaiEt)](PF6) {α-NaiEt=1-ethyl-2-(naphthyl-α-azo)imidazole}

Polyhedron ◽  
2007 ◽  
Vol 26 (3) ◽  
pp. 600-606 ◽  
Author(s):  
T.K. Mondal ◽  
Joydev Dinda ◽  
Alexandra M.Z. Slawin ◽  
J. Derek Woollins ◽  
C. Sinha
Keyword(s):  
Single Crystal ◽  
Carbonyl Complexes ◽  
X Ray ◽  
Osmium Carbonyl

Group 6 Metal Mixed Carbonyl Complexes with a Carboxyferrocenylphosphane

2000 ◽  
Vol 65 (12) ◽  
pp. 1897-1910 ◽  
Author(s):  
Lenka Lukešová ◽  
Jiří Ludvík ◽  
Ivana Císařová ◽  
Petr Štěpnička
Keyword(s):  
Carbon Monoxide ◽  
Cyclic Voltammetry ◽  
Solid State ◽  
Single Crystal ◽  
Carbonyl Complexes ◽  
State Structure ◽  
X Ray Diffraction ◽  
Thermally Induced ◽  
X Ray ◽  
Ferrocenecarboxylic Acid

A series of complexes [M(CO)5(Hdpf-κP)], where M = Cr (1), Mo (2) and W (3), and Hdpf is 1'-(diphenylphosphanyl)ferrocenecarboxylic acid, was obtained by thermally-induced (2) or photochemically-assisted (1, 3) displacement of carbon monoxide with Hdpf from the corresponding hexacarbonyl complexes. The complexes were characterized by NMR, UV-VIS and IR spectroscopies and further studied by cyclic voltammetry. The solid-state structure of complex 1 has been determined by single-crystal X-ray diffraction.

Syntheses and crystal structures of ruthenium complexes with bidentate salicylaldiminato and dithiophosphato ligands

2018 ◽  
Vol 73 (5) ◽  
pp. 329-335
Author(s):  
Li-Hua Tang ◽  
Fule Wu ◽  
Hui Lin ◽  
Ai-Quan Jia ◽  
Qian-Feng Zhang
Keyword(s):  
Schiff Base ◽  
Single Crystal ◽  
Crystal Structures ◽  
Schiff Bases ◽  
Ruthenium Complexes ◽  
Molecular Structures ◽  
Carbonyl Complexes ◽  
X Ray Diffraction ◽  
X Ray

AbstractTreatment of the bidentate Schiff base 2-[(2,6-diisopropyl-phenylimino)-methyl]-phenol (HL1) with one equivalent of (Et4N)[RuCl4(MeCN)2] in the presence of triethylamine afforded (Et4N)[RuCl3(κ2-N,O-L1)(MeCN)] (1), which reacted with two equivalents of K[S2P(OiPr)2] to produce a neutral ruthenium(III) complex [Ru(κ2-N,O-L1){η2-S2P(OiPr)2}2] (2) bearing both salicylaldiminato and dithiophosphato ligands. Reactions of the bidentate Schiff bases 2-[(3-chloro-phenylimino)-methyl]-phenol (HL2) and 2-[(2,4,6-trimethyl-phenylimino)-methyl]-phenol (HL3) with one equivalent of [Ru(CO)2Cl2] in the presence of triethylamine led to formation of the corresponding anionic ruthenium(II) carbonyl complexes (Et3NH)[RuCl2(κ2-N,O-L2)(CO)2] (3) and (Et3NH)[RuCl2(κ2-N,O-L3)(CO)2] (4). The molecular structures of complexes 2–4 have been determined by single-crystal X-ray diffraction.

Surface organometallic chemistry — Carbonyl complexes of Re(I) with silanolates as models of silica anchored rhenium carbonyl species

2005 ◽  
Vol 83 (6-7) ◽  
pp. 1017-1024
Author(s):  
Giuseppe D'Alfonso ◽  
Claudia Dragonetti ◽  
Simona Galli ◽  
Elena Lucenti ◽  
Piero Macchi ◽  
...  
Keyword(s):  
Single Crystal ◽  
Organometallic Chemistry ◽  
Key Words ◽  
Molecular Model ◽  
Carbonyl Complexes ◽  
X Ray Diffraction ◽  
X Ray ◽  
Rhenium Carbonyl ◽  
Surface Organometallic Chemistry ◽  
Carbonyl Species

Reaction of Me3SiONa with [Re(CO)5Cl] affords the new complex Na[Re2(CO)6(µ-OSiMe3)3], which could be generated via formation of [Re(CO)5OSiMe3] followed by immediate reaction with Me3SiO–. Substitution of some CO ligands by phosphines significantly decreases the electrophilicity of the Re(I) center, and therefore hinders further attack by Me3SiO–. Thus, fac-[Re(CO)3(Ph2PCH2CH2PPh2)OTf] (OTf is the triflate anion) reacts with Me3SiONa to give fac-[Re(CO)3(Ph2PCH2CH2PPh2)OSiMe3], a molecular model of silica anchored [Re(CO)5OSi≡]. However, substitution of only one CO by triphenylphosphine is not enough to avoid the formation of [Re2(CO)6(µ-OSiMe3)3]–. While fac-[Re(CO)3(Ph2PCH2CH2PPh2)OSiMe3] is stable towards hydrolysis, [Re2(CO)6(µ-OSiMe3)3]– is readily hydrolyzed to [Re2(CO)6(µ-OH)(µ-OSiMe3)2]–, a molecular model of silica anchored [Re2(CO)6(µ-OH)(µ-OSi≡)2]–, whose structure has been determined by single crystal X-ray diffraction. Key words: surface organometallic chemistry, rhenium, silica, silanolate, molecular model.

New X-ray powder diffraction data for the series CpMn(CO)3, Cp(CO)2Mn=C=CHPh, [Cp(CO)2Mn]2(μ-C=CHPh), and [Cp(CO)2Mn]2(μ-C4Ph2) complexes (Cp=η5-C5H5)

2004 ◽  
Vol 19 (2) ◽  
pp. 165-171 ◽  
Author(s):  
Alla B. Antonova ◽  
Oleg S. Chudin ◽  
Sergei D. Kirik
Keyword(s):  
Single Crystal ◽  
Powder Diffraction ◽  
Diffraction Method ◽  
Carbonyl Complexes ◽  
Space Group ◽  
X Ray ◽  
Cell Parameters ◽  
Orthorhombic Cell ◽  
Manganese Carbonyl ◽  
Monoclinic Cell

Four manganese carbonyl complexes: CpMn(CO)3 (1) and its phenylvinylidene derivatives Cp(CO)2Mn=C=CHPh (2), [Cp(CO)2Mn]2(μ-C=CHPh) (3), and Cp(CO)2Mn=C=C(Ph)–C(Ph)=C=Mn(CO)2Cp (4) have been studied by X-ray powder diffraction and their unit cell parameters are reported. The monoclinic cell parameters found for complex (1) are a=12.0479(7) Å, b=7.0614(5) Å, c=10.9172(6) Å, β=117.626(2)°, Z=4, space group P2(1)/a (No. 14). The orthorhombic cells parameters for complex (2) are a=10.5240(12) Å, b=33.1105(48) Å, c=7.5007(9) Å, Z=8, space group PCCN (No. 56); for complex (3) are a=15.3545(17) Å, b=15.3966(18) Å, c=8.0033(7) Å, Z=4, space group P21212121 (No. 19). The parameters found for complexes (1–3) are in good agreement with those obtained from single crystal X-ray diffractometry. The single crystal structure of complex (4) has not been studied. The orthorhombic cell parameters for complex (4) found by X-ray powder diffraction method are a=10.0986(9) Å, b=33.2937(27) Å, c=7.4139(5) Å, Z=4, space group P21 (No. 4).

Electron Microscopy of Shock Loaded Polycrystalline Beryllium

1974 ◽  
Vol 32 ◽  
pp. 506-507 ◽  
Author(s):  
J. M. Galbraith ◽  
L. E. Murr ◽  
A. L. Stevens
Keyword(s):  
Electron Microscopy ◽  
Wave Propagation ◽  
Structural Change ◽  
Single Crystal ◽  
Diffraction Pattern ◽  
Shock Loading ◽  
Slip Systems ◽  
Compression Tests ◽  
X Ray Diffraction ◽  
X Ray

Uniaxial compression tests and hydrostatic tests at pressures up to 27 kbars have been performed to determine operating slip systems in single crystal and polycrystal1ine beryllium. A recent study has been made of wave propagation in single crystal beryllium by shock loading to selectively activate various slip systems, and this has been followed by a study of wave propagation and spallation in textured, polycrystal1ine beryllium. An alteration in the X-ray diffraction pattern has been noted after shock loading, but this alteration has not yet been correlated with any structural change occurring during shock loading of polycrystal1ine beryllium.This study is being conducted in an effort to characterize the effects of shock loading on textured, polycrystal1ine beryllium. Samples were fabricated from a billet of Kawecki-Berylco hot pressed HP-10 beryllium.

Crystal structure of an inclusion complex between chiral monoaza-15-crown-5 and S(–)-1-phenyl-ethyl ammonium percholorate

2003 ◽  
Vol 218 (5) ◽  
Author(s):  
Süheyla Özbey ◽  
F. B. Kaynak ◽  
M. Toğrul ◽  
N. Demirel ◽  
H. Hoşgören
Keyword(s):  
Crystal Structure ◽  
Inclusion Complex ◽  
Single Crystal ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
New Type

AbstractA new type of inclusion complex, S(–)-1 phenyl ethyl ammonium percholorate complex of R-(–)-2-ethyl - N - benzyl - 4, 7, 10, 13 - tetraoxa -1- azacyclopentadecane, has been prepared and studied by NMR, IR and single crystal X-ray diffraction techniques. The compound crystallizes in space group

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