Abstract
In the title compound, {[Ag2Pr(C6H4NO2)4(H2O)4]ClO4·H2O}n, the PrIII atom, lying on a twofold rotation axis, has a distorted square-antiprismatic coordination geometry, defined by four O atoms from four nicotinate (nic) ligands and four water molecules. The AgI atom is coordinated in an almost linear fashion by two pyridyl N atoms from two nicotinate ligands. The linear coordination is augmented by weak interactions with three O atoms from one perchlorate anion, one uncoordinated water molecule and one carboxylate group. Two Pr atoms link two {Ag(nic)2}+ units into a ring, which is further extended into an infinite zigzag chain by sharing the Pr atoms. These chains are further connected into a three-dimensional network via weak Ag⋯O interactions, O—H⋯O hydrogen bonds, Ag⋯Ag interactions [3.357 (2) Å] and π–π interactions between the pyridyl rings [centroid–centroid distance = 3.685 (4) Å].
Highlights
In the title compound, {[Ag2Pr(C6H4NO2)4(H2O)4]ClO4ÁH2O}n, the PrIII atom, lying on a twofold rotation axis, has a distorted square-antiprismatic coordination geometry, defined by four O atoms from four nicotinate ligands and four water molecules
The linear coordination is augmented by weak interactions with three O atoms from one perchlorate anion, one uncoordinated water molecule and one carboxylate group
Two Pr atoms link two {Ag(nic)2}+ units into a ring, which is further extended into an infinite zigzag chain by sharing the Pr atoms
Summary
In the title compound, {[Ag2Pr(C6H4NO2)4(H2O)4]ClO4ÁH2O}n, the PrIII atom, lying on a twofold rotation axis, has a distorted square-antiprismatic coordination geometry, defined by four O atoms from four nicotinate (nic) ligands and four water molecules. The AgI atom is coordinated in an almost linear fashion by two pyridyl N atoms from two nicotinate ligands. Two Pr atoms link two {Ag(nic)2}+ units into a ring, which is further extended into an infinite zigzag chain by sharing the Pr atoms. These chains are further connected into a three-dimensional network via weak AgÁ Á ÁO interactions, O—HÁ Á ÁO hydrogen bonds, AgÁ Á ÁAg interactions [3.357 (2) A ] and – interactions between the pyridyl rings [centroid–centroid distance = 3.685 (4) A ]
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