Synthesis, single crystal X-ray characterization, and solution studies of Zn(II)-, Cu(II)-, Ag(I)- and Ni(II)-pyridine-2,6-dipicolinate N-oxide complexes with different topologies and coordination modes

2017 ◽  
Vol 458 ◽  
pp. 84-96 ◽  
Author(s):  
Mina Shahbazi ◽  
Farzaneh Mehrzad ◽  
Masoud Mirzaei ◽  
Hossein Eshtiagh-Hosseini ◽  
Joel T. Mague ◽  
...  
Keyword(s):  
Single Crystal ◽  
X Ray ◽  
Coordination Modes ◽  
Solution Studies

scholarly journals A new Rubidium - Bismuth polyphosphate RbBi(PO3)4: Growth, X-ray single crystal and vibrational study

2014 ◽  
Vol 10 (7) ◽  
pp. 2881-2893
Author(s):  
Khaled JAOUADI ◽  
Tahar MHIRI ◽  
Nabil ZOUARI
Keyword(s):  
Single Crystal ◽  
Structural Type ◽  
Inorganic Materials ◽  
X Ray ◽  
Weighted Residuals ◽  
Type Iv ◽  
Anisotropic Temperature ◽  
Solution Studies ◽  
Bridge Oxygen ◽  
Temperature Factors

Solid-solution studies in the ternary Rb2O – Bi2O3 – P2O5 system, carried out in a search for inorganic materials have a considerable interest mainly for their optical properties, specifically in laser technology, yielded the new compound RbBi(PO3)4. Single-crystal X-ray measurement revealed that RbBi(PO3)4 crystallizes in space group P21/c with a structural type IV and has lattice parameters a = 10.430, b = 8.984, c = 12.967 Å,  = 126.1°, Z = 4 and V = 981.6 Å3. The all eighteen atoms were located in the asymmetric unit. Refinement using anisotropic temperature factors for all atoms yielded weighted residuals based on F and F2 values, respectively, of R1 = 0.0131 and WR2 = 0.0252 for all observed reflections. The atomic arrangement can be described as a long chain polyphosphate organization, helical ribbons (PO3)n. Two types of infinite chains, with a period of eight PO4 tetrahedra run along the longest unit-cell directions. Infrared and Raman spectra at room temperature, were investigated, show clearly some characteristics bands of infinite chains structure of PO4 tetrahedra linked by a bridge oxygen.

scholarly journals Synthesis, Solid-state Structures, Solution Behaviour and Catalysis Studies of Nickel Complexes of Bis(benzimidazolin-2-ylidene)pyridine Pincer Ligands

2012 ◽  
Vol 65 (7) ◽  
pp. 823 ◽  
Author(s):  
Karen D. M. MaGee ◽  
Guy Travers ◽  
Brian W. Skelton ◽  
Massimilliano Massi ◽  
Alan D. Payne ◽  
...  
Keyword(s):  
Solid State ◽  
Single Crystal ◽  
Nickel Complexes ◽  
Pincer Ligands ◽  
X Ray Diffraction ◽  
Nmr Studies ◽  
X Ray ◽  
Solution Studies ◽  
Solid State Structures ◽  
Solution Behaviour

N-Heterocyclic carbene–nickel complexes with five- and four-coordinate geometries [(CNC)NiBr2] and [(CNC)NiBr]X (X = PF6 or BPh4) have been prepared with the pincer ligands 2,6-bis(N-octylbenzimidazolin-2-ylidene)pyridine and 2,6-bis(N-butyl-5,6-dimethoxybenzimidazolin-2-ylidene)pyridine. The addition of the n-octyl substituent significantly extends the solubility of the complexes and has allowed UV-vis solution studies of the complexes in dichloromethane and methanol. The four- and five-coordinate species exist in equilibrium in solution and this equilibrium has been explored by UV-vis studies. The complexes have also been characterized by NMR studies, and single crystal X-ray diffraction studies have been performed on [(CNC)NiBr2] (where CNC = 2,6-bis(N-octylbenzimidazolin-2-ylidene)pyridine) and [(CNC)NiBr]BPh4 (where CNC = 2,6-bis(N-butyl-5,6-dimethoxybenzimidazolin-2-ylidene)pyridine).

Preparation, Characterization and Crystal Structure of Lead(II) Tricyanomethanide

2006 ◽  
Vol 61 (1) ◽  
pp. 33-36 ◽  
Author(s):  
Victor M. Deflon ◽  
Cassia C. de Sousa Lopes ◽  
Karl E. Bessler ◽  
Lincoln L. Romualdo ◽  
Elke Niquet
Keyword(s):  
Crystal Structure ◽  
Aqueous Solution ◽  
Single Crystal ◽  
Thermal Behaviour ◽  
Ir Spectrum ◽  
Saturated Aqueous Solution ◽  
X Ray Diffraction ◽  
X Ray ◽  
Coordination Modes

The so far unknown lead tricyanomethanide, Pb[C(CN)3]2, was obtained from a saturated aqueous solution of PbCl2 and solid AgC(CN)3. Its IR spectrum and thermal behaviour are described. The crystal structure was determined by single-crystal X-ray diffraction (trigonal, P31m, Z = 3, a = 1414.4(5), c = 409.02(6) pm, R1 = 0.0249, wR2 = 0.0527). Two crystallographically independent ninefold coordinated Pb atoms are connected by planar tricyanomethanide ions in two distinct bridging coordination modes. The Pb−N distances range between 254 and 293 pm.

Synthesis, Structures and Magnetic Properties of 1D Cu(II)-NIT Radical Complex

2021 ◽  
Vol 13 (7) ◽  
pp. 1253-1258
Author(s):  
Cai-Wen Zhang ◽  
You-Juan Zhang ◽  
Jing Chen ◽  
Qing-Lun Wang
Keyword(s):  
Magnetic Properties ◽  
Single Crystal ◽  
Magnetic Interactions ◽  
X Ray Diffraction ◽  
Coordination Environment ◽  
Space Group ◽  
X Ray ◽  
Coordination Modes ◽  
Radical Complex ◽  
Ferromagnetic Interactions

ABSTRACTAn 1D Cu(II) complex, which formula is [Cu(hfac)2NITpPy]n (1) (NITpPy = 2-(4-pyridyl)-4,4,5,5-tetra-methylimidazoline-1-oxyl-3-oxide, hfac = hexafluoroacetylacetonate) has been synthesized and characterized by single crystal X-ray diffraction. The complex 1 crystallizes in the triclinic pī space group. Two adjacent Cu(II) ions with different coordination modes are bridged by NITpPy to form a magnetic zig-zag chain. In the built chains, the Cu(II) ions located in the CuO4N2 coordination environment and the >N–O–Cu(II)- O–N< hetero-spin clusters of the CuO6 units are alternately arranged, which lead to two different Cu-NITpPy magnetic interactions. The fit parameters (J1 = −3.56 cm−1 and J2 = 0.46 cm−1) indicate an antiferromagnetic and ferromagnetic interactions in the complex 1.

Single-Crystal X-ray Diffraction and Solution Studies of Anion-π Interactions inN-(Pentafluorobenzyl)pyridinium Salts

2014 ◽  
Vol 2014 (12) ◽  
pp. 2435-2442 ◽  
Author(s):  
Michael Giese ◽  
Markus Albrecht ◽  
Tatjana Repenko ◽  
Johannes Sackmann ◽  
Arto Valkonen ◽  
...  
Keyword(s):  
Single Crystal ◽  
Pyridinium Salts ◽  
X Ray Diffraction ◽  
X Ray ◽  
Π Interactions ◽  
Solution Studies

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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