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Crystal structure of a macrocyclic tetraamine isocyanato zinc(II) complex (1998)

Choi, Ki-Young ; Chun, Kang Moon ; Suh, Il-Hwan

Springer

Journal of chemical crystallography 28 (1998), S. 831-834

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ISSN: 1572-8854

Schlagwort(e): Crystal structure ; macrocyclic tetraamine ; isocyanato zinc(II) complex

Quelle: Springer Online Journal Archives 1860-2000

Thema: Geologie und Paläontologie , Physik

Notizen: Abstract The complex, [Zn(L)(NCO)]Cl · 3H2O (1) (L = 3,14-dimethyl-2,6,13,17-tetraazatricyclo[14,4,01.18,07.12]docosane), has been synthesized and structurally characterized. 1 crystallizes in the monoclinic system, space group P21/n with a = 10.530(3), b = 9.315(2), c = 27.188(3) Å, β = 92.58(1)°, V = 2664.1(9)Å3, and Z = 4. The zinc atom is in a distorted squarepyramidal environment with the four nitrogen atoms of the macrocycle and one nitrogen atom of the isocyanate ligand.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1023/A:1021831921283

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Digitale Medien

Synthesis and crystal structure of macrocyclic nickel(II) complex bridged by chromate (1998)

Choi, Ki-Young ; Suh, Il-Hwan

Springer

Journal of chemical crystallography 28 (1998), S. 867-870

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ISSN: 1572-8854

Schlagwort(e): Crystal structure ; macrocyclic nickel(II) complex ; chromate

Quelle: Springer Online Journal Archives 1860-2000

Thema: Geologie und Paläontologie , Physik

Notizen: Abstract A novel compound catena-(μ-CrO4-O,O′)[Ni(L1)Ni(L2)] 3H2O (1) (L1 = 3,5,10,12-tetramethyl-1,4,8,11-tetraazacyclotetradecane and L2 = 2,5,9,12-tetramethyl-1,4,8,11-tetraazacyclotetradecane) has been synthesized for the first time and structurally characterized. 1 crystallizes in the triclinic space group Pī with a = 9.623(1), b = 10.084(1), c = 12.723 (3) Å, α = 66.74(2), β = 75.20(1), γ = 72.02(1)°, V = 1066.2(3) Å3, and Z = 2. The coordination environment around the Ni(II) ions is an axially elongated octahedron with the secondary amines of the isomeric ligands and two oxygen atoms of [CrO4]2−.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1023/A:1022890217250

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Digitale Medien

The structure of bis[(o-hydroxyphenoxy)ethoxy]ethane monohydrate (1985)

Suh, IL-Hwan ; Namgung, Hae ; Yoon, Young Ku ; [weitere]

Springer

Journal of inclusion phenomena and macrocyclic chemistry 3 (1985), S. 21-26

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ISSN: 1573-1111

Schlagwort(e): Crystal structure ; (hydroxyphenoxy) ethoxy ethane hydrate

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Abstract The title compound (C18H22O6·H2O) crystallizes in space groupP212121 witha=25.909(5),b=8.542(3),c=8.187(3) Å,Z=4. The structure was determined from 1538 X-ray diffractometer data and refined toR=8.05%. The polyether adopts an annular structure with the water molecule at the center, and is slightly folded like the wings of a butterfly. As usual, all torsion angles about C−O aretrans and about C−C aregauche. This complex displays 3 three-center (bifurcated) and 1 two-center hydrogen bonds, between phenolic hydroxyl and water oxygen. The latter is involved in an infinite homodromic chain O(1)−H...O W −H...O(1)−H...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00658857

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