Co[(C₆H₁₀)(NH₃)₂][C₆H₂(COO)₄] · 2H₂O und Zn[(C₆H₁₂)(NH₃)₂][C₆H₂(COO)₄] · ¹/₂H₂O ‐ Zwei zeolithartige dreidimensionale Koordinationspolymere

Abstract

Monoclinic single crystals of Co[(C 6 H 10)(NH 3) 2 ][C 6 H 2 (COO) 4 ] • 2H 2 O have been prepared in aqueous solution at 80 °C. Space group C2/c (no. 15), a = 1065.92(8), b = 1568.97(9), c = 1140.88(9) pm, β = 90.101(6)°, V = 1.9080(2) nm 3 , Z = 4. Co 2+ , which is situated on a twofold crystallographic axis, is coordinated in a moderately distorted tetrahedral fashion by four oxygen atoms stemming from the pyromellitate anions (Co-O 197.87(12) and 200.64(12) pm). A three-dimensionally connected coordination polymer is made up by Co 2+ and C 6 H 2 (COO) 4 4featuring channel-like voids, which accomodate water molecules and (C 6 H 10)(NH 3) 2 2+ cations compensating for the negative excess charge of the three-dimensional framework. Thermogravimetric analysis in air showed that the dehydrated compound was stable between 198 and 361 °C. Further decomposition yielded CoO. Zn[(C 6 H 12)(NH 3) 2 ][C 6 H 2 (COO) 4 ]• 1 / 2 H 2 O (2) was prepared analogously to 1 employing 1, 6diaminohexane. Space group P2 1 /n (no. 14), a = 1087.78(8), b = 1515.18(11), c = 1162.21(10) pm, β=96.249(7)°, V = 1.9042(3) nm 3 , Z = 4. Zn 2+ is coordinated tetrahedrally like Co 2+ by oxygen atoms of the pyromellitate anions (Zn-O 195.0(4)-197.8(4)). The connection of Zn 2+ with the anions leads similar to 1 to a three-dimensional framework with voids accomodating (C 6 H 12)(NH 3) 2 2+-cations and water molecules. 2 was stable anhydrously between approx. 120 and 340 °C, the further decomposition was completed at 700 °C yielding ZnO.

Synthesis and Crystal Structure of Two CuII‐benzene‐1,2,4,5‐tetracarboxylates with Three‐Dimensional Open Frameworks

“…[15][16][17][18][19][20][21][22][23] In particular, three-dimensional frameworks are available in the presence of organic amines acting as template molecules. [24][25][26][27][28] Previous work on the reaction between Cu 2+ and benzene-1,2,4,5-carboxylic acid in the presence of templating agents resulted in various three-dimensional frameworks with channel-like voids resembling zeolite structures. [29][30][31][32][33][34][35] Additionally, Cu 2+ -benzenecarboxylato complexes can possess interesting magnetic properties [21,30,31,33,35] and they can act as catalysts sional frameworks with wide centrosymmetric channel-like voids.…”

Synthesis, Crystal Structure, Hydrogen Bonding and Thermal Behaviour of a Three-Dimensional Cu(II)-Benzene-1,2,4,5-Tetracarboxylate Templated by 1,9-Diaminononane

“…(b) Newman projection along the C(2)C(1) bond. (35) O (14) 271.6 O (w1) -H (32) O (9) 289.9 O (w3) -H (36) O (w1) 287.5 O (w2) -H (33) O (7) 300.1 O (w4) -H (38) O (13) 276.5 O (w2) -H (34) O (11) 277.3 O (w5) -H (39) O (w3) 288.2 O (w5) -H (40) O (8) 308.7…”

Synthesis, Crystal Structure, Hydrogen Bonding, and Thermal Behavior of a Three‐Dimensional CuII‐benzene‐1,2,4,5‐tetracarboxylate Templated by 1,9‐Diaminononane

“…N‐donor ligands as spacers and organic amines as template molecules, respectively 18–28. In the presence of organic amines as template molecules three‐dimensional frameworks are available 29–34. Previous work on the reaction between Cu 2+ and benzene‐1,2,4,5‐carboxylic acid in the presence of templating agents resulted in various three‐dimensional frameworks with channel‐like voids resembling zeolite structures 35–41.…”