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Media type:
E-Article
Title:
Synthesis and Crystal Structure of Two CuII‐benzene‐1,2,4,5‐tetracarboxylates with Three‐Dimensional Open Frameworks
Contributor:
Köferstein, Roberto;
Robl, Christian
Published:
Wiley, 2014
Published in:
Zeitschrift für anorganische und allgemeine Chemie, 640 (2014) 2, Seite 310-316
Language:
English
DOI:
10.1002/zaac.201300527
ISSN:
1521-3749;
0044-2313
Origination:
Footnote:
Description:
AbstractTwo new three‐dimensional frameworks with zeolite‐like channels were prepared in the presence of 1,6‐diaminohexane. Cu1.5(H3N–(CH2)6–NH3)0.5[C6H2(COO)4]·5H2O (1) crystallizes in the triclinic space group P$\bar{1}$ with a = 772.56(7), b = 1110.36(7), c = 1111.98(8) pm, α = 98.720(7)°, β = 108.246(9)°, and γ = 95.559(7)°. Cu2(H3N–(CH2)6–NH3)0.5(OH)[C6H2(COO)4]·3H2O (2) crystallizes in the monoclinic space group P2/c with a = 1159.34(11), b = 1059.44(7), c = 1582.2(2) pm, and β = 106.130(11)°. The Cu2+ coordination polyhedra are connected by [C6H2(COO)4]4– anions to yield three‐dimensional frameworks with wide centrosymmetric channel‐like voids. Complex 1 reveals voids extending along [100] with diagonals of 900 pm and 300 pm, whereas in complex 2 the diagonal of the nearly rectangular crossection of the channels extending parallel to [001] is 900 pm. The negative excess charges of the frameworks are compensated by [H3N–(CH2)6–NH3]2+ cations, which occupy the voids along with water molecules. The [H3N–(CH2)6–NH3]2+ cations are not connected to Cu2+ and have served as templates.