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Selten‐Erd‐Metall‐Koordinationspolymere: Synthese und Kristallstrukturen von fünf neuen Adipinaten, [M 2 (Adi) 3 (H 2 O) 4 ](AdiH 2 )(H 2 O) 4 (M = La, Nd), [Er(Adi)(H 2 O) 5 ]Cl(H 2 O) und [M(Adi)(H 2 O) 5 ](NO 3 )(H 2 O) (M = Gd, Er)
Author(s) -
Bromant Claudia,
Flemig Holger,
Nika Wassiliki,
Pantenburg Ingo,
Meyer Gerd
Publication year - 2006
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200500464
Subject(s) - triclinic crystal system , monoclinic crystal system , isostructural , crystallography , crystal structure , chemistry , stereochemistry
Rare‐Earth‐Metal Coordination Polymers: Synthesis and Crystal Structures of Five New Adipinates, [M 2 (Adi) 3 (H 2 O) 4 ](AdiH 2 )(H 2 O) 4 (M = La, Nd), [Er(Adi)(H 2 O) 5 ]Cl(H 2 O) and [M(Adi)(H 2 O) 5 ](NO 3 )(H 2 O) (M = Gd, Er) The new rare‐earth compounds [M 2 (Adi) 3 (H 2 O) 4 ](AdiH 2 )(H 2 O) 4 (M = La ( 1 ), Nd ( 2 )), [Er(Adi)(H 2 O) 5 ]Cl(H 2 O) ( 3 ) and [M(Adi)(H 2 O) 5 ](NO 3 )(H 2 O) (M = Gd ( 4 ), Er ( 5 )) were obtained from the reaction of adipinic acid with La(OH) 3 ·xH 2 O, Nd 2 O 3 , ErCl 3 ·6H 2 O, Gd(NO) 3 ·xH 2 O and Er 2 O 3 , respectively. Their crystal structures were determined by single‐crystal X‐ray diffraction. The coordination polymers [M 2 (Adi) 3 (H 2 O) 4 ](AdiH 2 )(H 2 O) 4 crystallize in the triclinic space group ${\rm P}{\bar 1}$ (no. 2) with a = 875.4(1), b = 1000.4(2), c = 1179.0(2) pm, α = 74.70(1), β = 69.85(1), γ = 86.18(2)° and Z = 1 (crystal data for M = La, ( 1 )). The quasi‐isostructural compounds [Er(Adi)(H 2 O) 5 ]Cl(H 2 O) ( 3 ) and [M(Adi)(H 2 O) 5 ](NO 3 )(H 2 O) (M = Gd ( 4 ), Er ( 5 )) crystallize with monoclinic symmetry, space group C2/c (no. 15) with lattice parameters of a = 1231.5(1), b = 1532.6(1), c = 895.4(1) pm, β = 123.44(1)° and Z = 4 (crystal data for ( 3 )). The rare‐earth cations have the coordination numbers 10 ( 1 , 2 ) and 9 ( 3 , 4 and 5 ), respectively. The compounds [M 2 (Adi) 3 (H 2 O) 4 ](AdiH 2 )(H 2 O) 4 are constructed of infinite chains of edge‐sharig [MO 8 (H 2 O) 2 ] polyhedra that are cross‐linked by adipinic acid molecules to form framework structures. In [Er(Adi)(H 2 O) 5 ]Cl(H 2 O) ( 3 ) and [M(Adi)(H 2 O) 5 ](NO 3 )(H 2 O) (M = Gd ( 4 ), Er ( 5 )) the central cations are bridged by adipinic acid molecules in a bidentate‐chelating manner to positively charged zigzag chains. Between these the counter ions and crystal water molecules are incorporated.