SYNTHESIS AND STRUCTURE OF A THREE-DIMENSIONAL LANTHANUM(III) COORDINATION POLYMER WITH MELLITATE, {La2[C6(COO)6](H2O)9} · 2H2O

Wu, Liang; Munakata, Megumu; Yamamoto, Mikiko; Kuroda–Sowa, Takayoshi; Maekawa, Masahiko

doi:10.1080/00958979608023566

Cited by 37 publications

(16 citation statements)

References 8 publications

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“…In the crystal structure, the double-layer polymeric networks are held together by an extensive array of O-HÁ Á ÁO hydrogen bonds, which involves the H atoms of the metal-coordinated water ligand O49, the carboxylic acid functions OH23 and OH48, and the noncoordinated water molecules O50 trapped in the structure (Table 3). The observed multiple coordination pattern of the oxophilic La III cations to carboxylic acid/ carboxylate/water ligands, with La-O bond lengths in the range 2.4-2.7 Å , is similar to earlier documented findings in polymeric networks incorporating La 3+ cations and deprotonated pyrromellitic acid anions (Wen et al, 2004;Chui et al, 2001;Wu et al, 1996).…”

Section: Figuresupporting

confidence: 89%

Coordination polymers and hydrogen-bonded assemblies of 2,2′-[2,5-bis(carboxymethoxy)-1,4-phenylene]diacetic acid with ammonium, lanthanum and zinc cations

Karmakar

Goldberg

2010

Acta Crystallogr C

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We report the synthesis of the 2,2'-[2,5-bis(carboxymethoxy)-1,4-phenylene]diacetic acid (TALH(4)) ligand and the structures of its adducts with ammonium, namely diammonium 2,2'-[2,5-bis(carboxymethyl)-1,4-phenylenedioxy]diacetate, 2NH(4)(+).C(14)H(12)O(10)(2-), (I), lanthanum, namely poly[[aquabis[mu(4)-2,2'-(2-carboxylatomethyl-5-carboxymethyl-1,4-phenylenedioxy)diacetato]dilanthanum(III)] monohydrate], {[La(2)(C(14)H(11)O(10))(2)(H(2)O)].H(2)O}(n), (II), and zinc cations, namely poly[[{mu(4)-2,2'-[2,5-bis(carboxymethyl)-1,4-phenylenedioxy]diacetato}zinc(II)] trihydrate], {[Zn(C(14)H(12)O(10))].3H(2)O}(n), (III), and poly[[diaqua(mu(2)-4,4'-bipyridyl){mu(4)-2,2'-[2,5-bis(carboxymethyl)-1,4-phenylenedioxy]diacetato}dizinc(II)] dihydrate], {[Zn(2)(C(14)H(10)O(10))(C(10)H(8)N(2))(H(2)O)(2)].2H(2)O}(n), (IV), the formation of all four being associated with deprotonation of TALH(4). Adduct (I) is a diammonium salt of TALH(2)(2-), with the ions located on centres of crystallographic inversion. Its crystal structure reveals a three-dimensional hydrogen-bonded assembly of the component species. Reaction of TALH(4) with lanthanum trinitrate hexahydrate yielded a two-dimensional double-layer coordination polymer, (II), in which the La(III) cations are nine-coordinate. With zinc dinitrate hexahydrate, TALH(4) forms 1:1 two-dimensional coordination polymers, in which every Zn(II) cation is linked to four neighbouring TALH(2)(2-) anions and each unit of the organic ligand is coordinated to four different tetrahedral Zn(II) cation connectors. The crystal structure of this compound accommodates molecules of disordered water at the interface between adjacent polymeric layers to give (III), and it has been determined with low precision. Another polymer assembly, (IV), was obtained when zinc dinitrate hexahydrate was reacted with TALH(4) in the presence of an additional 4,4'-bipyridyl ligand. In the crystal structure of (IV), the bipyridyl and TAL(4-) entities are located on two different inversion centres. The ternary coordination polymers form layered arrays with corrugated surfaces, with the Zn(II) cation connectors revealing a tetrahedral coordination environment. The two-dimensional polymers in (II)-(IV) are interconnected with each other by hydrogen bonds involving the metal-coordinated and noncoordinated molecules of water. TALH(4) is doubly deprotonated, TALH(2)(2-), in (I) and (III), triply deprotonated, viz. TALH(3-), in (II), and quadruply deprotonated, viz. TAL(4-), in (IV). This report provides the first structural characterization of TALH(4) (in deprotonated form) and its various supramolecular adducts. It also confirms the potential utility of this tetraacid ligand in the formulation of coordination polymers with metal cations.

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Section: Figuresupporting

confidence: 89%

Coordination polymers and hydrogen-bonded assemblies of 2,2′-[2,5-bis(carboxymethoxy)-1,4-phenylene]diacetic acid with ammonium, lanthanum and zinc cations

Karmakar

Goldberg

2010

Acta Crystallogr C

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“…6 19.64 and 8.74 emu K mol À1 at 2 K, respectively. Because the spin-orbital coupling leads the 4f n configuration of Ln 3+ ions (except for Gd 3+ , to split into 2S+1 L J states, and the latter further splits into Stark components under the crystal-field perturbation), it is not possible to use the model as that used in 2 to interpret the magnetic properties of 3, 4 and 5.…”

Section: Magnetic Propertiesmentioning

confidence: 99%

“…1,3,5-benzenetricarboxylate (H 3 BTC) or tetrafunctional ligands, e.g. 1,2,4,5-benzenetetracarboxylate (H 4 BTC), have already been reported [18][19][20][21][22][23][24][25]. While most of such complexes are prepared employing hydrothermal methods in aqueous solutions, the preparations of them by solvothermal reactions in the mixed solutions of organic solvents and water are less common.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, structures and physical properties of new 3D lanthanide coordination polymers constructed from 1,2,4,5-benzenetetracarboxylic acid

Zhang

Tian

et al. 2011

Journal of Molecular Structure

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“…The carboxylate groups of the mellitate anion coordinate to metal cations by one or more of the bonding modes shown in Fig. 1 [19,20,23].…”

Section: Introductionmentioning

confidence: 99%

“…Mellitic acid (1,2,3,4,5,6-benzenehexacarboxylic acid) is a rather versatile ligand for the synthesis of polymeric complexes with metal cations. Previously reported structural data of several mellitate complexes with the ions such as calcium [10], potassium, cesium [11] and aluminum [12,13] and the transition metal ions such as copper [14,15], nickel [16], cobalt [17], manganese [18] as well as compounds of the rare earth elements: lanthanum [19], cerium, europium and ytterbium [20], gadolinium [21], erbium [22], neodymium, holmium [23], thulium [24]. Nowadays, mixed complexes: silver-magnesium [25], lithium-manganese [26], europium-yttrium [27] as well as a series of uranyl and lanthanide (trivalent Ce, Nd) mellitates [28] have been synthesized.…”

Section: Introductionmentioning

confidence: 99%

Some properties of Nd and Er complexes with 1,2,3,4,5,6-benzenehexacarboxylic (mellitic) acid

Ostasz

Łyszczek

Mazur

et al. 2013

Journal of Analytical and Applied Pyrolysis

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SYNTHESIS AND STRUCTURE OF A THREE-DIMENSIONAL LANTHANUM(III) COORDINATION POLYMER WITH MELLITATE, {La₂[C₆(COO)₆](H₂O)₉} · 2H₂O

Cited by 37 publications

References 8 publications

Coordination polymers and hydrogen-bonded assemblies of 2,2′-[2,5-bis(carboxymethoxy)-1,4-phenylene]diacetic acid with ammonium, lanthanum and zinc cations

Coordination polymers and hydrogen-bonded assemblies of 2,2′-[2,5-bis(carboxymethoxy)-1,4-phenylene]diacetic acid with ammonium, lanthanum and zinc cations

Synthesis, structures and physical properties of new 3D lanthanide coordination polymers constructed from 1,2,4,5-benzenetetracarboxylic acid

Some properties of Nd and Er complexes with 1,2,3,4,5,6-benzenehexacarboxylic (mellitic) acid

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