X-ray studies on metal ion interactions with vitamins. 1. Crystal and molecular structure of the tetrakis(.mu.-acetato)bis(thiamin monophosphate)dirhodium(II) sesquihydrate complex: thiamin base-metal bonding

1985 ◽  
Vol 107 (22) ◽  
pp. 6242-6249 ◽  
Author(s):  
Katsuyuki Aoki ◽  
Hiroshi Yamazaki
Keyword(s):  
Molecular Structure ◽  
Base Metal ◽  
Metal Ion ◽  
Crystal And Molecular Structure ◽  
X Ray ◽  
Metal Bonding ◽  
Ion Interactions ◽  
Metal Ion Interactions

Total external reflection X-ray fluorescence analysis of protein-metal ion interactions in biological systems

2012 ◽  
Vol 57 (5) ◽  
pp. 648-655 ◽  
Author(s):  
N. N. Novikova ◽  
M. V. Kovalchuk ◽  
E. A. Yur’eva ◽  
O. V. Konovalov ◽  
A. V. Rogachev ◽  
...  
Keyword(s):  
Metal Ion ◽  
Biological Systems ◽  
Fluorescence Analysis ◽  
Total External Reflection ◽  
X Ray ◽  
Ion Interactions ◽  
Metal Ion Interactions

Synthesis, IR and X-Ray Studies of Tetra(N,N′-tetraethyl-N″-benzoyl- phosphorictriamide)-tetra(μ-3-methoxo)-tetra(methanol)tetra-NickeI(II)

1998 ◽  
Vol 53 (8) ◽  
pp. 836-840 ◽  
Author(s):  
Vladimir A. Ovchynnikov ◽  
Vladimir M. Amirkhanov ◽  
Anatoliy A. Kapshuk ◽  
Tatyana Yu. Sliva ◽  
Tadeusz Glowiak ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Oxygen Atom ◽  
Metal Ion ◽  
Crystal And Molecular Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Octahedral Environment ◽  
Distorted Octahedral ◽  
Methoxy Groups ◽  
Oxygen Atoms

Abstract A new nickel(II) complex with N,N′-tetraethyl-N″-benzoylphosphortriamide (HL = C6H5C(O)N(H)P(O)(NEt2)2) of composition Ni4L4(OCH3)4·(HOCH3)4 (1) has been synthe­ sized. The crystal and molecular structure of 1 has been determined from the X-Ray diffraction data (tetragonal, space group P4̄21c with a = 17.000(2) Å, c = 15.338(3) Å, Z = 2; R = 0.0399 for 1412 unique reflections). The structure is made up of cubane-like tetramers. In the corners of a cube there are 4 atoms of nickel and 4 atoms of oxygen of methoxy groups. The nickel atoms are characterized by a slightly distorted octahedral environment, which consists of three oxygen atoms of methoxy groups, carbonylic and phosphorylic oxygen atoms of the ligand L-, and an oxygen atom of a methanol molecule. The ligands L- coordinate to the metal ion forming a chelate via the oxygen atoms of carbonylic and phosphorylic groups.

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