In situ syntheses of trans-spanned octahedral ruthenium complexes. Crystal structures of trans-[Ru(Cl)(trpy){Ph2PC6H4CH2O(CO)(CH2)4(CO)OCH2C6H4PPh2}][PF6]·0.25C6H5Me·0.5CH2Cl2 and trans-[Ru(Cl)(trpy)(PPh3)2][BF4]·CH2Cl2 †

1999 ◽  
pp. 2281-2292 ◽  
Author(s):  
Willie J. Perez ◽  
Charles H. Lake ◽  
Ronald F. See ◽  
Laurence M. Toomey ◽  
Melvyn Rowen Churchill ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Ruthenium Complexes

Symmetrical tetra-β″-sulfoleno-meso-aryl-porphyrins — synthesis, spectroscopy and structural characterization

2014 ◽  
Vol 18 (01n02) ◽  
pp. 115-122 ◽  
Author(s):  
Srinivas Banala ◽  
Klaus Wurst ◽  
Bernhard Kräutler
Keyword(s):  
Metal Complexes ◽  
Crystal Structures ◽  
Structural Characterization ◽  
Building Blocks ◽  
Cycloaddition Reactions ◽  
One Pot

We report here the preparation (in "one-pot") of a tetra-β″-sulfoleno-meso-aryl-porphyrin in about 80% yield by using an optimized modification of Lindsey's variant of the Adler–Longo approach. The Zn ( II )-, Cu ( II )- and Ni ( II )-complexes of the symmetrical porphyrin were prepared and characterized spectroscopically. Crystal structures of the fluorescent Zn ( II )- and of the non-fluorescent Ni ( II )-tetra-β″-sulfoleno-meso-aryl-porphyrinates showed the highly substituted porphyrin ligands to be nearly perfectly planar. The Zn ( II )-complex of this porphyrin has been used as a thermal precursor of a reactive diene, and — formally — of lateral and diagonal bis-dienes, of a tris-diene and of a tetra-diene, which all underwent [4 + 2]-cycloaddition reactions in situ with a range of dienophiles. Thus, the tetra-β″-sulfoleno-meso-aryl-porphyrin and its metal complexes represent reactive building blocks, "programmed" for the syntheses of symmetrical and highly functionalized porphyrins.

Determination of the crystal structure of magnesium perchlorate hydrates by X-ray powder diffraction and the charge-flipping method

2010 ◽  
Vol 66 (6) ◽  
pp. 579-584 ◽  
Author(s):  
Kevin Robertson ◽  
David Bish
Keyword(s):  
Crystal Structures ◽  
Powder Diffraction ◽  
Fundamental Parameter ◽  
Magnesium Perchlorate ◽  
Space Group ◽  
X Ray ◽  
Partial Pressures ◽  
Dehydration Reactions

X-ray powder diffraction (XRD) data were used to solve the crystal structures of phases in the magnesium perchlorate hydrate system, Mg(ClO4)2·nH2O (n = 4, 2). A heating stage and humidity generator interfaced to an environmental cell enabled in-situ XRD analyses of dehydration reactions under controlled temperatures and partial pressures of H2O (P_{{\rm H}_2{\rm O}}). The crystal structures were determined using an ab initio charge-flipping method and were refined using fundamental-parameter Rietveld methods. Dehydration of magnesium perchlorate hexahydrate to tetrahydrate (348 K) results in a decrease in symmetry (space group = C2), where isolated Mg2+ cations are equatorially coordinated by four H2O molecules with two [ClO4]− tetrahedra at the apices. Further dehydration to the dihydrate (423 K) leads to bridging of the isolated packets to form double corner-sharing chains of octahedra and polyhedra (space group = C2/m).

scholarly journals In situ reversible redox switching of first hyperpolarizability of bimetallic ruthenium complexes

2019 ◽  
Vol 21 (21) ◽  
pp. 11079-11086 ◽  
Author(s):  
C. Karthika ◽  
S. R. Sarath Kumar ◽  
L. Kathuria ◽  
P. K. Das ◽  
A. G. Samuelson
Keyword(s):  
Ruthenium Complexes ◽  
First Hyperpolarizability ◽  
Bimetallic Complex ◽  
Reversible Redox ◽  
Redox Switching

Reversible redox switching of first hyperpolarizability of Monometallic and bimetallic complex.

Synthesis, crystal structures, and magnetic properties of two Cu (II)-complexes based on in situ generated 5-NO2-2-hydroxyisophthalic acid

2014 ◽  
Vol 67 (9) ◽  
pp. 1629-1638 ◽  
Author(s):  
Yapan Wu ◽  
Yiqiang Mu ◽  
Liang Bai ◽  
Shasha Guo ◽  
Jun Zhao ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Crystal Structures

Synthesis, crystal structures, and selected properties of Cu(II) and Zn(II) complexes with in situ formed 2-hydroxy-N′-(propan-2-ylidene)benzohydrazide

2012 ◽  
Vol 65 (24) ◽  
pp. 4277-4287 ◽  
Author(s):  
Shunsheng Zhao ◽  
Sijiao Wang ◽  
Xiangrong Liu ◽  
Bei Liang ◽  
Lanlan Li ◽  
...  
Keyword(s):  
Crystal Structures
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