NDLI: Influence of the presence of divalent first-row transition metal ions on the structure of sodium(i) salts of 1,2,3,4-benzenetetracarboxylic acid (H<sub>4</sub>bta)

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CrystEngComm Vol - 8 Issue - 3

CrystEngComm Vol - 8 Issue - 2

Influence of the presence of divalent first-row transition metal ions on the structure of sodium(i) salts of 1,2,3,4-benzenetetracarboxylic acid (H₄bta)

Content Provider	Royal Society of Chemistry (RSC)
Author	Cañadillas-Delgado, Laura Ruiz-Pérez, Catalina Julve, Miguel Fabelo, Oscar Pasán, Jorge
Copyright Year	2006
Abstract	Three different sodium(I)-containing salts of 1,2,4,5-benzenetetracarboxylic (H4bta) of formula [Na4(bta)(H2O)12] (1), [Na2M(H2bta)2(H2O)8]·2H2O] [M = Mn (2) and Ni (3)] were synthesized and their structures were solved by single crystal X-ray diffraction methods. Compound 1 crystallises in orthorhombic system, space group Pc21b with a = 6.9997(4) Å, b = 16.4260(9) Å, c = 20.3312(18) Å, V = 476.30(15) Å3 and Z = 4. Compounds 2 and 3 crystallize in the monoclinic system, space group C2/m with a = 7.3778(4) Å, b = 20.1493(6) Å, c = 10.4963(4) Å, β = 103.466(8)°, V = 1517.5(11) Å3 and Z = 2 for 1 and a = 7.2862(4) Å, b = 20.1165(7) Å, c = 10.4032(3) Å, β = 103.366(9)°, V = 1483.52(11) Å3 and Z = 2 for 2. The structure of 1 consists of layers of four crystallographically independent sodium atoms [two six- (Na(Ow)6) and two five- (Na(Ow)3O2) coordinated] which are bridged by tetrakismonodentate bta4− ligands and single and double water molecules. These layers are interlinked through hydrogen bonds involving some of the coordinated water molecules and free carboxylate-oxygen atoms to afford a 3-D network. Compounds 2 and 3 are isostructural: their structures are made up of chains with regular alternating pairs of Na+ and single M2+ cations [M = Mn (2) and Ni (3)], two water molecules acting as bridges between each pair of metal ions. Two water molecules (at M) and two carboxylate-oxygen atoms from two H2bta2− ligands (at Na) which are coordinated to the metal ions in trans positions build distorted octahedral surroundings. The H2bta2− group acts as a bismonodentate ligand toward adjacent sodium atoms through 1,3-carboxylate oxygens. These neutral chains are interlinked through hydrogen bonds involving free carboxylate-oxygen atoms and coordinated and crystallization water molecules to afford a 3-D structure.
Starting Page	338
Ending Page	345
Page Count	8
File Format	HTM / HTML PDF
ISSN	14668033
Volume Number	8
Issue Number	4
Journal	CrystEngComm
DOI	10.1039/b516806f
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Subscribed
Subject Keyword	North America 4 X-ray crystallography Sodium Monoclinic crystal system Ligand Orthorhombic crystal system Water of crystallization Space group Hydrogen bond
Content Type	Text
Resource Type	Article
Subject	Chemistry Condensed Matter Physics Materials Science

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