X-ray single-crystal structural characterization of Na2MgSiO4 with cristobalite-type structure synthesised at 22 GPa and 1800 °C

2018 ◽  
Vol 30 (3) ◽  
pp. 485-489 ◽  
Author(s):  
Ekaterina A. Sirotkina ◽  
Luca Bindi ◽  
Andrey V. Bobrov ◽  
Anastasia Tamarova ◽  
Dmitry Yu. Pushcharovsky ◽  
...  
Keyword(s):  
Single Crystal ◽  
Structural Characterization ◽  
Type Structure ◽  
X Ray ◽  
Crystal Structural

Structural Characterization of a Cage Ligand Fragmentation Reaction

1994 ◽  
Vol 47 (1) ◽  
pp. 181 ◽  
Author(s):  
JM Harrowfield ◽  
AM Sargeson ◽  
BW Skelton ◽  
AH White
Keyword(s):  
Single Crystal ◽  
Structural Characterization ◽  
Room Temperature ◽  
Fragmentation Reaction ◽  
X Ray ◽  
Nitrogen Donor ◽  
Crystal Structural

The room temperature X-ray single-crystal structural characterization of a protonated copper(II) complex of a ligand artefact, L′, of L = N-Me6sar (described in an accompanying paper) is recorded, the new ligand L′ being generated formally by elimination of a CH2CH2 bridge between a pair of nitrogen donor atoms of L. The complex, [ ClCu (H2L′) (ClO4)3.2H2O, is orthorhombic, Pccn , a 22.528(7), b 10.544(3), c 13.748(6) Ǻ, Z = 4 formula units, R being 0.053 for 1133 independent 'observed' [I > 3σ(I)] reflections. The cation, containing five-coordinate square-pyramidal ClCuN4 copper, is disposed with the Cu- Cl bond [2.458(3)Ǻ] lying on a crystallographic 2 axis; Cu-N distances are 2.094(8) and 2.093(8)Ǻ.

Synthesis and structural characterization of a magnesium phthalocyanine(3–) anion

2012 ◽  
Vol 16 (01) ◽  
pp. 154-162 ◽  
Author(s):  
Edwin W.Y. Wong ◽  
Daniel B. Leznoff
Keyword(s):  
Absorption Spectrum ◽  
Solid State ◽  
Single Crystal ◽  
Structural Characterization ◽  
Heterometallic Complex ◽  
State Structure ◽  
Solid State Structure ◽  
X Ray ◽  
X Ray Crystallography

The reduction of magnesium phthalocyanine (MgPc) with 2.2 equivalents of potassium graphite in 1,2-dimethoxyethane (DME) gives [K2(DME)4]PcMg(OH)(1) in 67% yield. Compound 1 was structurally characterized using single crystal X-ray crystallography and was found to be a monomeric, heterometallic complex consisting of a μ3-OH ligand that bridges a [MgIIPc3-]- anion to two potassium cations solvated by four DME molecules. An absorption spectrum of 1 confirms the Pc ligand is singly reduced and has a 3–charge. The solid-state structure of 1 does not indicate breaking of the aromaticity of the Pc ligand. Compound 1 is only the second Pc3- complex and the first reduced MgPc to be isolated and structurally characterized.

Structural Systematics of Rare Earth Complexes. VII. Crystal Structure of Bis(2,2'/6',2␛-Terpyridinium) Octaaquaterbium(III) Heptachloride Hydrate

1994 ◽  
Vol 47 (2) ◽  
pp. 391 ◽  
Author(s):  
CJ Kepert ◽  
BW Skeleton ◽  
AH White
Keyword(s):  
Crystal Structure ◽  
Rare Earth ◽  
Single Crystal ◽  
Structural Characterization ◽  
Title Compound ◽  
Room Temperature ◽  
Chloride Ions ◽  
Full Matrix ◽  
X Ray

The room-temperature single-crystal X-ray structural characterization of the title compound (tpyH2)2[Tb(OH2)8]Cl7.~2⅓H2O is recorded. Crystals are triclinic, Pī , a 17.063(5), b 16.243(3), c 7.878(3) Ǻ, α 84.78(2), β 84.39(3), γ 87.81(2)°, Z = 2 formula units; 3167 'observed' diffractometer reflections were refined by full-matrix least-squares procedures to a residual of 0.057. Notable features of interest of the compound are the 'chelation' of chloride ions by the terpyridinium cations , and the existence of a free [Tb(OH2)8]2+ cation in the presence of an abundance of chloride ions.

Structural characterization of β-2′-pyridylaminocrotonoyl-2-pyridylamide by ESI-MS, NMR, single crystal X-ray analysis and ab initio methods

2003 ◽  
Vol 654 (1-3) ◽  
pp. 61-69 ◽  
Author(s):  
Borys Ośmiałowski ◽  
Katri Laihia ◽  
Elina Virtanen ◽  
Maija Nissinen ◽  
Erkki Kolehmainen ◽  
...  
Keyword(s):  
Single Crystal ◽  
Ab Initio ◽  
Structural Characterization ◽  
Ab Initio Methods ◽  
X Ray ◽  
Esi Ms

Structural Characterization of the Reaction Products of Vanadium(II) and Endrin as 2 Isomers of 1,8,exo-9,10,11-Pentachloropentacyclo[6.2.1.13,6.02,7.04,10]dodecan-5-one

1989 ◽  
Vol 42 (6) ◽  
pp. 959
Author(s):  
DE Clegg ◽  
PC Healy ◽  
GJ Patch ◽  
BW Skelton ◽  
AH White
Keyword(s):  
Single Crystal ◽  
Structural Characterization ◽  
Structure Determination ◽  
Title Compound ◽  
Reaction Products ◽  
X Ray

Two dechlorinated products (B) and (D), formed in the reaction between endrin (C12H8Cl6O) and vanadium(II) for the purpose of confirmation of identity, are shown by single-crystal X-ray structure determination to be isomers of the title compound, C12H9Cl5O. Crystals of both are monoclinic, P21/c. For isomer (B), a 7.432(8), b 12.76(1), c 14.55(2) � , β 108.32(9)�, Z=4; R was 0.038 for 2594 observed reflections. For isomer (D), a 9.037(4), b 12.004(4), c 14.436(6) � , β 124.91(2)°, Z= 4; R was 0.041 for 1826 reflections. The geometries of the two isomers are compared.

Synthesis and structural characterization of anion complexes with azacalix[2]dipyrrolylmethane: effect of anion charge on the conformation of the macrocycle

2016 ◽  
Vol 45 (29) ◽  
pp. 11781-11790 ◽  
Author(s):  
Tapas Guchhait ◽  
Ganesan Mani ◽  
Carola Schulzke
Keyword(s):  
Single Crystal ◽  
Structural Characterization ◽  
X Ray ◽  
Partial Cone ◽  
Anion Complexes

Azacalix[2]dipyrrolylmethane is flexible changing its 1,3-alternate conformation to the 1,2-alternate, partial cone or cone conformations with respect to the charge on the anion, as shown by a series of single crystal X-ray structures of inorganic mono- and dianionic complexes.

Axially Asymmetric Metal Alkyls. VII. Crystallographic Characterization of λ-(R,R) and δ-(S,S)-[ZrL(η-C5H5)2], L = [2-CH(SiMe3)C6H4]22-

1988 ◽  
Vol 41 (11) ◽  
pp. 1773 ◽  
Author(s):  
CL Raston ◽  
BW Skelton ◽  
P Twiss ◽  
AH White
Keyword(s):  
Single Crystal ◽  
Structural Characterization ◽  
X Ray ◽  
Axially Asymmetric ◽  
Metal Alkyls

The single-crystal X-ray structural characterization of λ-(R,R)-and δ- (S,S)-[ ZrL (η-C5H5)2], L = [2-CH(SiMe3)C6H4]22-, is recorded for comparison with the λ-(R,S)-/δ-(S,R)-isomer, previously reported.

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