Dirubidium hexaaquacobalt(II) tetrakis(hydrogen phthalate) tetrahydrate and coordination modes of the hydrogen phthalate anion
Abstract
The title compound, Rb-2[Co(H2O)(6)](C8H5O4)(4)center dot 4H(2)O, consists of nearly regular octahedral [Co(H2O)(6)](2+) cations with the Co-II cations on the inversion centre (special position 2a), Rb+ cations, hydrogen phthalate (Hpht ) anions and disordered water molecules. The Rb+ cation is surrounded by nine O atoms from Hpht anions and water molecules, with a strongly deformed pentagonal-bipyramidal geometry and one apex split into three positions. The crystal packing is governed by numerous hydrogen bonds involving all water molecules and Hpht(-) anions. In this way, layers parallel to the ab plane are formed, with the aromatic rings of the Hpht(-) anions esentially directed along the c axis. While Hpht(-) anions form the outer part of the layers, disordered water molecules and Rb+ cations alternate with [Co(H2O)(6)](2+) cations in the inner parts. The only interactions between the layers are van der Waals forces between the atoms of the aromatic rings. A search of the Cambridge... Structural Database for coordination modes and types of hydrogen-bonding interaction of the Hpht(-) anion showed that, when uncoordinated Hpht(-) anions are present, compounds with intermolecular hydrogen bonds are more numerous than compounds with intramolecular hydrogen bonds. For coordinated Hpht(-) anions, chelating and bridging anions are almost equally common, while monodentate anions are relatively scarce. The same coordination modes appear for Hpht(-) anions with or without intramolecular hydrogen bonds, although intramolecular hydrogen bonds are less common.
Keywords:
crystal structure / hexaaquacobalt(II) / hydrogen phthalate anion / rubidium saltSource:
Acta Crystallographica Section C-Structural Chemistry, 2013, 69, 841-+Publisher:
- Int Union Crystallography, Chester
Funding / projects:
DOI: 10.1107/S0108270113016788
ISSN: 2053-2296
PubMed: 23907872
WoS: 000323749700011
Scopus: 2-s2.0-84881183634
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Poleti, Dejan AU - Rogan, Jelena PY - 2013 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2391 AB - The title compound, Rb-2[Co(H2O)(6)](C8H5O4)(4)center dot 4H(2)O, consists of nearly regular octahedral [Co(H2O)(6)](2+) cations with the Co-II cations on the inversion centre (special position 2a), Rb+ cations, hydrogen phthalate (Hpht ) anions and disordered water molecules. The Rb+ cation is surrounded by nine O atoms from Hpht anions and water molecules, with a strongly deformed pentagonal-bipyramidal geometry and one apex split into three positions. The crystal packing is governed by numerous hydrogen bonds involving all water molecules and Hpht(-) anions. In this way, layers parallel to the ab plane are formed, with the aromatic rings of the Hpht(-) anions esentially directed along the c axis. While Hpht(-) anions form the outer part of the layers, disordered water molecules and Rb+ cations alternate with [Co(H2O)(6)](2+) cations in the inner parts. The only interactions between the layers are van der Waals forces between the atoms of the aromatic rings. A search of the Cambridge Structural Database for coordination modes and types of hydrogen-bonding interaction of the Hpht(-) anion showed that, when uncoordinated Hpht(-) anions are present, compounds with intermolecular hydrogen bonds are more numerous than compounds with intramolecular hydrogen bonds. For coordinated Hpht(-) anions, chelating and bridging anions are almost equally common, while monodentate anions are relatively scarce. The same coordination modes appear for Hpht(-) anions with or without intramolecular hydrogen bonds, although intramolecular hydrogen bonds are less common. PB - Int Union Crystallography, Chester T2 - Acta Crystallographica Section C-Structural Chemistry T1 - Dirubidium hexaaquacobalt(II) tetrakis(hydrogen phthalate) tetrahydrate and coordination modes of the hydrogen phthalate anion EP - + SP - 841 VL - 69 DO - 10.1107/S0108270113016788 ER -
@article{ author = "Poleti, Dejan and Rogan, Jelena", year = "2013", abstract = "The title compound, Rb-2[Co(H2O)(6)](C8H5O4)(4)center dot 4H(2)O, consists of nearly regular octahedral [Co(H2O)(6)](2+) cations with the Co-II cations on the inversion centre (special position 2a), Rb+ cations, hydrogen phthalate (Hpht ) anions and disordered water molecules. The Rb+ cation is surrounded by nine O atoms from Hpht anions and water molecules, with a strongly deformed pentagonal-bipyramidal geometry and one apex split into three positions. The crystal packing is governed by numerous hydrogen bonds involving all water molecules and Hpht(-) anions. In this way, layers parallel to the ab plane are formed, with the aromatic rings of the Hpht(-) anions esentially directed along the c axis. While Hpht(-) anions form the outer part of the layers, disordered water molecules and Rb+ cations alternate with [Co(H2O)(6)](2+) cations in the inner parts. The only interactions between the layers are van der Waals forces between the atoms of the aromatic rings. A search of the Cambridge Structural Database for coordination modes and types of hydrogen-bonding interaction of the Hpht(-) anion showed that, when uncoordinated Hpht(-) anions are present, compounds with intermolecular hydrogen bonds are more numerous than compounds with intramolecular hydrogen bonds. For coordinated Hpht(-) anions, chelating and bridging anions are almost equally common, while monodentate anions are relatively scarce. The same coordination modes appear for Hpht(-) anions with or without intramolecular hydrogen bonds, although intramolecular hydrogen bonds are less common.", publisher = "Int Union Crystallography, Chester", journal = "Acta Crystallographica Section C-Structural Chemistry", title = "Dirubidium hexaaquacobalt(II) tetrakis(hydrogen phthalate) tetrahydrate and coordination modes of the hydrogen phthalate anion", pages = "+-841", volume = "69", doi = "10.1107/S0108270113016788" }
Poleti, D.,& Rogan, J.. (2013). Dirubidium hexaaquacobalt(II) tetrakis(hydrogen phthalate) tetrahydrate and coordination modes of the hydrogen phthalate anion. in Acta Crystallographica Section C-Structural Chemistry Int Union Crystallography, Chester., 69, 841-+. https://doi.org/10.1107/S0108270113016788
Poleti D, Rogan J. Dirubidium hexaaquacobalt(II) tetrakis(hydrogen phthalate) tetrahydrate and coordination modes of the hydrogen phthalate anion. in Acta Crystallographica Section C-Structural Chemistry. 2013;69:841-+. doi:10.1107/S0108270113016788 .
Poleti, Dejan, Rogan, Jelena, "Dirubidium hexaaquacobalt(II) tetrakis(hydrogen phthalate) tetrahydrate and coordination modes of the hydrogen phthalate anion" in Acta Crystallographica Section C-Structural Chemistry, 69 (2013):841-+, https://doi.org/10.1107/S0108270113016788 . .