Synthesis, Reactivity, and X-ray Crystal Structure of Some Mixed-Ligand Oxovanadium(V) Complexes:  First Report of Binuclear Oxovanadium(V) Complexes Containing 4,4‘-Bipyridine Type Bridge

2006 ◽  
Vol 45 (13) ◽  
pp. 5150-5161 ◽  
Author(s):  
Manas Sutradhar ◽  
Gurunath Mukherjee ◽  
Michael G. B. Drew ◽  
Saktiprosad Ghosh
Keyword(s):  
Crystal Structure ◽  
Mixed Ligand ◽  
X Ray ◽  
First Report

Concomitant polymorphs of methoxyflavone (5-methyl-7-methoxyflavone)

RSC Advances ◽  
2016 ◽  
Vol 6 (45) ◽  
pp. 38709-38715 ◽  
Author(s):  
Ningbo Gong ◽  
Kun Hu ◽  
Guimin Jin ◽  
Guanhua Du ◽  
Yang Lu
Keyword(s):  
Crystal Structure ◽  
Amorphous Phase ◽  
Bioactive Compound ◽  
X Ray ◽  
First Report

A novel metastable polymorph and an unstable amorphous phase of methoxyflavone were discovered after a decade since the first report of the X-ray crystal structure of this bioactive compound.

Crystal Structure of a Novel Furo-Furan Lactone from Heliotropium eichwaldi

2012 ◽  
Vol 67 (3) ◽  
pp. 269-271
Author(s):  
Sadiqa Firdous ◽  
Nida Hassan Ansari ◽  
Seik Weng Ngb ◽  
Sammer Yousuf ◽  
Abdul Malik
Keyword(s):  
Crystal Structure ◽  
Ethyl Acetate ◽  
Soluble Fraction ◽  
X Ray Diffraction ◽  
X Ray ◽  
First Report ◽  
First Time

A novel furo-furan lactone 1 has been isolated as fine needles from the ethyl acetate-soluble fraction of Heliotropium eichwaldi. This is the first report of any furo-furan from the genus Heliotropium. β -Sitosterol 3-O-β -D-glucoside 2 has also been obtained for the first time from this source. The structure of 1 was elucidated by X-ray diffraction studies.

The first mixed-ligand coordination compound involving 8-aminoquinoline and pyridine-2,6-dicarboxylate: synthesis, X-ray crystal structure, and DFT studies

2015 ◽  
Vol 68 (20) ◽  
pp. 3599-3610 ◽  
Author(s):  
Melika Eftekhar ◽  
Masoud Mirzaei ◽  
Azam Hassanpoor ◽  
Iman Khosravi ◽  
Antonio Bauzá ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Coordination Compound ◽  
Mixed Ligand ◽  
Dft Studies ◽  
X Ray ◽  
Ligand Coordination

The Great Barrier Reef Expedition 1928–29: The crystal structure and occurrence of weddellite, ideally CaC2O4·2.5H2O, from the Low Isles, Queensland

2016 ◽  
Vol 80 (2) ◽  
pp. 399-406 ◽  
Author(s):  
Stuart J. Mills ◽  
Andrew G. Christy
Keyword(s):  
Crystal Structure ◽  
Coral Reef ◽  
Low Temperature ◽  
Great Barrier Reef ◽  
Single Crystal ◽  
Structure Study ◽  
Barrier Reef ◽  
X Ray Diffraction ◽  
X Ray ◽  
First Report

Abstract“Envelope crystals” collected during The Great Barrier Reef Expedition in May 1929 have been studied using low-temperature synchrotron single-crystal X-ray diffraction. The crystals are shown to be weddellite, with the largest content of zeolitic water reported to date. A new H2O site has been located within the crystal structure. Study of the crystals show that the end-member formula for weddellite should be reported as CaC2O4·(2.5 – x)H2O, where 0≤x≤ 0.25, instead of CaC2O4·(2H2O or CaC2O4·(2 + x )H2O. This is also the first report of weddellite occurring in a coral reef.

scholarly journals X-ray crystal structure of [L 2Ag3]+[OTf]−·5C6D6: a monoanionic bisphosphinimine ligand supported trisilver complex

2021 ◽  
Vol 77 (10) ◽  
pp. 1025-1028
Author(s):  
Sam L. Drescher ◽  
Christopher P. Forfar ◽  
René T. Boeré ◽  
Paul G. Hayes
Keyword(s):  
Crystal Structure ◽  
Asymmetric Unit ◽  
High Quality ◽  
Metal Centers ◽  
X Ray ◽  
First Report ◽  
Bond Lengths ◽  
Solvent Molecules ◽  
Deuterated Benzene ◽  
Silver Atoms

The compound bis{μ3-2,5-bis[N-(4-isopropylphenyl)-P,P-diphenylphosphorimidoyl]pyrrol-1-ido-κ3 N:N′:N′′}trisilver(I) trifluoromethanesulfonate deuterated benzene pentasolvate, [Ag3(C46H44N3P2)2](CF3O3S)·5C6D6, (I), was synthesized from two equivalents of NaL [L = 2,5-(4- i PrC6H4N=PPh2)C4H2N] and three equivalents of AgOTf (OTf = OSO2CF3). High-quality crystals of (I) formed with five deuterated benzene solvent molecules in the asymmetric unit. Notably, the bond lengths and angles between the three silver atoms are markedly different, unlike in most other reported trisilver complexes that tend to form three equivalent metal centers. Additionally, to the best of our knowledge, this is the first report of a trisilver complex with six nitrogen donors from two bisphosphinimine ligands.

The Structure of the Tetranuclear Cubane-Like Nickel(II) Xanthate Alkoxide [Ni(C2H5OCS2)-(C5H4NCH2O)]4 as Its Acetone Solvate, an Example of a Non-Reversible Inclusion Compound

1986 ◽  
Vol 39 (7) ◽  
pp. 1035 ◽  
Author(s):  
K Bizilj ◽  
SG Hardin ◽  
BF Hoskins ◽  
PJ Oliver ◽  
ERT Tiekink ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Inclusion Compound ◽  
Mixed Ligand ◽  
X Ray Diffraction ◽  
Triclinic Space Group ◽  
Space Group ◽  
X Ray ◽  
Oxygen Atoms

The crystal structure of the acetone solvate of a mixed ligand tetranuclear nickel(II) complex involving the pyridine-2-methoxide ( pym ) and 0-ethylxanthate (exa) anions has been determined by X-ray diffraction methods. Crystals of [Ni (exa)( pym )]4.Me2CO are triclinic, space group Pī , a 13.825(2), b 15.606(3), c 12.288(2)Ǻ, α 101.16(2), β 101.38(1), γ 85.80(1)°, with Z 2; R and Rw were 0.056 and 0.057 respectively for 4,771 unique reflections for which I ≥ 3σ(I). The structure consists of tetranuclear cubane -like clusters with four nickel and four oxygen atoms arranged at alternate corners of a distorted cube. The discrete molecules of occluded acetone are located in cavities defined by the [Ni( exa )( pym )]4 units.

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