Co-ordination of alkali metals by open-chain polyethers in transition-metal complexes. Part 1. X-Ray crystal and molecular structure of tetrakis[1-o-carboxymethoxyphenoxy)-2-(o-hydroxyphenoxy)ethanato(1–)]dipotassiumcobalt(II), a trinuclear potassium–cobalt–potassium complex

1982 ◽  
pp. 1239-1245 ◽  
Author(s):  
David L. Hughes ◽  
Jonathan N. Wingfield
Keyword(s):  
Molecular Structure ◽  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Alkali Metals ◽  
Crystal And Molecular Structure ◽  
Open Chain ◽  
X Ray ◽  
Potassium Complex

Heavy transition metal complexes of biologically important molecules. I. The crystal and molecular structure of trans-dichloro(bis(isopropyl)-sulfoxide-S)(1-methylcytosine-N)platinum(II)

1976 ◽  
Vol 54 (1) ◽  
pp. 53-58 ◽  
Author(s):  
Colin James Lyne Lock ◽  
Robert Anthony Speranzini ◽  
John Powell
Keyword(s):  
Molecular Structure ◽  
Transition Metal ◽  
Metal Complexes ◽  
Single Crystal ◽  
Least Squares ◽  
Transition Metal Complexes ◽  
Crystal And Molecular Structure ◽  
X Ray Diffraction ◽  
Full Matrix ◽  
X Ray

The crystal and molecular structure of trans-dichloro(bis(isopropyl)sulfoxide-S)(1-methylcytosine-N)platinum(II) has been determined by single crystal X-ray diffraction. The crystals are triclinic with a = 16.205(5), b = 8.078(2), c = 6.776(2) Å, α = 106.53(2), β = 96.35(2), γ = 98.54(2)°. The space group is [Formula: see text] and there are two molecules per unit cell. A total of 2294 independent reflections, of which 2023 were observed, were examined on a Syntex [Formula: see text] diffractometer. The structure was refined by full matrix least squares analysis to an R2 value of 0.0427. The ligands form a rough square around the platinum atom with Pt—Cl(1), 2.304(3), Pt—Cl(2), 2.287(4), Pt—S, 2.232(2), Pt—N, 2.058(7). Distances within the ligands are normal. The plane of the cytosine ring is at 84.4° to the plane formed by the ligands around platinum.

Transition Metal Complexes of Diazenes, XVII [1]. Reactions of 1,2-Diazetines and 1,2-Diazetine-N-oxides with Iron Carbonyls

1982 ◽  
Vol 37 (4) ◽  
pp. 463-467 ◽  
Author(s):  
A. Albini ◽  
H. Kisch ◽  
C. Krüger ◽  
An-Pei Chiang
Keyword(s):  
Molecular Structure ◽  
Transition Metal ◽  
Metal Complexes ◽  
Electronic Properties ◽  
Transition Metal Complexes ◽  
Lone Pair ◽  
X Ray ◽  
Iron Carbonyls

Enneacarbonyldiiron reacts with 3,3,4,4-tetramethyl-1,2-diazetine (L) or its mono-N-oxide (L′) to form complexes (L)Fe(CO)4 (3), (L)Fe2(CO)7 (4), (L)Fe2(CO)6 (5), or (L′)Fe(CO)4 (6), and small amounts of deoxygenated 4 and 5, respectively. Formation and stability of the complexes is compared with those of ligands with smaller and larger ring sizes and discussed in terms of the electronic properties of the ligand lone-pair Orbitals. The molecular structure of 4 is established by X-ray analysis.

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