A New Class of Easily Generated TCNQ²⁻-Based Coordination Polymers

New CuI2(TCNQ–II) and CuI2(F4TCNQ–II) Coordination Polymers

“…8 Easily obtained TCNQH 2 , structure II, affords a very convenient starting material for the synthesis of an extensive range of coordination polymers of the TCNQ 2-ligand in a form suitable for single crystal X-ray diffraction studies. [9][10][11][12][13][14][15] In contrast to earlier coordination polymers of the TCNQ -· radical anion in which the TCNQ moieties are in close contact, the TCNQ 2-ligands in the derived coordination polymers are commonly, spatially well separated. One of our longer term objectives is to partially oxidise such TCNQ 2--based coordination polymers to a mixed TCNQ 1-/TCNQ 2- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 68.996°, no.…”

Solvent‐, Cation‐ and Anion‐Induced Structure Variations in Manganese‐Based TCNQF4Complexes: Synthesis, Crystal Structures, Electrochemistry and Their Catalytic Properties

“…This typeo fn etwork is very similart oas eries of sheet-like structures, in which trans-pyridyl-based ligands complete an octahedral geometry of divalent metal centres linked by TCNQ 2À ligands. [16] As with the TCNQ-based structures described in the literature, tetradentate TCNQF 4 2À is inclinedt ot he plane of the four metal centres to which it is bound. As ac onsequence, the dianions within as heet are not co-planar,a lthough the 1,4-axes (passing throught he 1,4-positions of the aromatic rings)o fa ll dianions are all parallel.…”

“…successfully used H 2 TCNQF 4 with aweak base, such as LiOAc, to produce organic TCNQF 4 2À salts and metal-coordination polymers. [16][17][18][19] Coordination polymers incorporating the TCNQF 4 2À anion commonly form networks with channels that may permit the intercalation of either oxidants or electron-acceptorm olecules. The incorporation of such guest molecules into the voids inside the framework has the potentialt om odifyt he physicalp roperties of the solid, which results in interesting and potentially usefule lectronic and magnetic behaviour.H erein, we report the synthesis of four new MnÀTCNQF 4 dianion complexes;t he composition and structure of the compounds dependu pon the choice of solventa nd/orc ounter-ions employed.…”

Coordination Polymers Constructed from TCNQ2– Anions and Chelating Ligands

“…A series of neutral two-dimensional (2D) networks of composition M II (TCNQ ÀII )L 2 (M ¼ Mn, Co, Zn, Cd, L ¼ pyridyl-based ligands such as pyridine (py), 4-methylpyridine, quinoline, isoquinoline, 4-phenylpyridine, and nicotinamide) have also been generated by the addition of TCNQH 2 to M II ions in the presence of a pyridyl-based molecule that acts as both a weak base and co-ligand. [8] The Zn II (TCNQ ÀII )(py) 2 network is typical of many structures in this series. A slightly undulating 2D Zn II (TCNQ ÀII ) network is formed with trans pyridyl-based ligands extending above and below the 2D polymer as indicated in Fig.…”

“…[5] In recent years, several coordination polymers involving TCNQ ÀII (or the tetrafluoro analogue, F 4 TCNQ ÀII ), in which TCNQH 2 (or F 4 TCNQH 2 ) has been used as the starting material have been reported. [6][7][8] In the presence of a relatively weak base, open-type anionic networks of composition [M II 2 (TCNQ ÀII ) 3 ] 2À (M ¼ Mn, Fe, Co, Ni, Zn, Cd) [6] and [Cu I (F 4 TCNQ ÀII )] À [7] that possess a variety of 3D structures have been synthesised. A series of neutral two-dimensional (2D) networks of composition M II (TCNQ ÀII )L 2 (M ¼ Mn, Co, Zn, Cd, L ¼ pyridyl-based ligands such as pyridine (py), 4-methylpyridine, quinoline, isoquinoline, 4-phenylpyridine, and nicotinamide) have also been generated by the addition of TCNQH 2 to M II ions in the presence of a pyridyl-based molecule that acts as both a weak base and co-ligand.…”