Crystal Structure and Characterization of Two Layered Copper(II) Coordination Polymers with Anions of 3‐Phosphonopropionic Acid and (RS)‐2‐Phosphonobutyric Acid

Blue single crystals of Cu[μ3‐O3P(CH2)2COOH]·2H2O (1) and Cu[(RS)‐μ3‐O3PCH(C2H5)COOH]·3H2O (2) were prepared in aqueous solutions (pH = 2.5–3.5). 1 crystallizes in space group Pbca (no. 61) with a = 812.5(2), b = 919.00(9), and c = 2102.3(2) pm. Cu2+ is fivefold coordinated by three oxygen atoms ste...

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Vydané v:Zeitschrift für anorganische und allgemeine Chemie (1950) Ročník 644; číslo 4; s. 205 - 214
Hlavní autori: Köferstein, Roberto, Arnold, Michael, Robl, Christian
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Weinheim Wiley Subscription Services, Inc 01.03.2018
Wiley-VCH Verlag
Predmet:
2‐Phosphonobutyric acid
3‐Phosphonopropionic acid
Anions
Antiferromagnetism
Cationic polymerization
Chemical Sciences
Coordination chemistry
Coordination polymer
Coordination polymers
Copper
Copper compounds
Coupling (molecular)
Cristallography
Crystal structure
Diffraction
Hydrogen bonds
Isomers
Magnetic measurement
Oxygen atoms
Polymers
Single crystals
Structural analysis
UV/Vis spectroscopy
Water chemistry
coordination polymers
phosphonate
Phosphonobutyric acid
UV-Vis
Isomers
Antiferromagnetic coupling
copper complexes
electronic transition
Phosphonopropionic Acid
Superexchange
copper
Layers
Metal organic frameworks MOFs
ISSN:0044-2313, 1521-3749
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Shrnutí:Blue single crystals of Cu[μ3‐O3P(CH2)2COOH]·2H2O (1) and Cu[(RS)‐μ3‐O3PCH(C2H5)COOH]·3H2O (2) were prepared in aqueous solutions (pH = 2.5–3.5). 1 crystallizes in space group Pbca (no. 61) with a = 812.5(2), b = 919.00(9), and c = 2102.3(2) pm. Cu2+ is fivefold coordinated by three oxygen atoms stemming from [O3P(CH2)2COOH]2– anions and two water molecules. The Cu–O bond lengths range from 194.0(3) to 231.8(4) pm. The connection between the [O3P(CH2)2COOH]2– anions and the Cu2+ cations yields a polymeric structure with layers parallel to (001). The layers are linked by hydrogen bonds. 2 crystallizes in space group Pbca (no. 61) with a = 1007.17(14), b = 961.2(3), c = 2180.9(4) pm. The copper cations are surrounded by five oxygen atoms in a square pyramidal fashion with Cu–O bonds between 193.6(4) and 236.9(4) pm. The coordination between [O3PCH(C2H5)COOH]2– and Cu2+ results in infinite puckered layers parallel to (001). The layers are not connected by any hydrogen bonds. Each layer contains both R and S isomers of the [O3PCH(C2H5)COOH]2– dianion. Water molecules not bound to Cu2+ are intercalated between the layers. UV/Vis spectra suggest three d–d transition bands at 743, 892, 1016 nm for 1 and four bands at 741, 838, 957, and 1151 nm for 2, respectively. Magnetic measurements suggest a weak antiferromagnetic coupling between Cu2+ due to a super‐superexchange interaction. Thermoanalytical investigations in air show that the compounds are stable up to 95 °C (1) and 65 °C (2), respectively.
Bibliografia:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:0044-2313
1521-3749
DOI:10.1002/zaac.201700453