Supramolecular interactions in Cobalt(II)–nucleobases complexes: A methyl matter

Khaled Hassanein; Félix Zamora; Oscar Castillo; Pilar Amo-Ochoa

doi:10.1016/j.ica.2016.02.032

Supramolecular interactions in Cobalt(II)–nucleobases complexes: A methyl matter

Khaled Hassanein
, Félix Zamora
, Oscar Castillo^*
, Pilar Amo-Ochoa

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Direct reactions between cobalt(II) acetate and the corresponding modified nucleobase lead to the mononuclear complexes [Co(TAcO)₂(H₂O)₄] (1) and [Co(UAcO)₂(H₂O)₄] (2), (TAcO = thymine-1-acetate, UAcO = uracil-1-acetate). Additionally the reactions between the Co(II) salt with equimolar amount of 2,6-diaminopurine (HDap) and either TAcOH or UAcOH give rise to {[Co(HDap)₂(H₂O)₄]·(TAcO)₂·3H₂O} (3) and {[Co(HDap)₂(H₂O)₄]·(UAcO)₂·3H₂O} (4), respectively. The X-ray analysis of all of these complexes show a common feature, the presence of four water molecules in the basal plane coordinated to the Co(II) center. In case of complexes 1 and 2 the coordination environment around the Co(II) is a CoO₂O_w4with two modified nucleobases coordinated in a monodentate way through one oxygen of the carboxylate group, whereas for 3 and 4 the coordination environment is CoN₂Ow₄as a consequence of the coordination to the nitrogen atoms of two HDap ligands. The extended inter-H-bond interactions between water molecules and nucleobase moieties, play crucial role in the crystal packing of complexes.

Original language	English
Pages (from-to)	251-257
Number of pages	7
Journal	Inorganica Chimica Acta
Volume	452
DOIs	https://doi.org/10.1016/j.ica.2016.02.032
State	Published - 2016
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2016 Elsevier B.V.

Keywords

H-bonding
Metal–nucleobase complexes
Molecular recognition

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

Access to Document

10.1016/j.ica.2016.02.032

Cite this

@article{7a9b4a9268ce4d5f98f0340d3ec5ba80,

title = "Supramolecular interactions in Cobalt(II)–nucleobases complexes: A methyl matter",

abstract = "Direct reactions between cobalt(II) acetate and the corresponding modified nucleobase lead to the mononuclear complexes [Co(TAcO)2(H2O)4] (1) and [Co(UAcO)2(H2O)4] (2), (TAcO = thymine-1-acetate, UAcO = uracil-1-acetate). Additionally the reactions between the Co(II) salt with equimolar amount of 2,6-diaminopurine (HDap) and either TAcOH or UAcOH give rise to \{[Co(HDap)2(H2O)4]·(TAcO)2·3H2O\} (3) and \{[Co(HDap)2(H2O)4]·(UAcO)2·3H2O\} (4), respectively. The X-ray analysis of all of these complexes show a common feature, the presence of four water molecules in the basal plane coordinated to the Co(II) center. In case of complexes 1 and 2 the coordination environment around the Co(II) is a CoO2Ow4with two modified nucleobases coordinated in a monodentate way through one oxygen of the carboxylate group, whereas for 3 and 4 the coordination environment is CoN2Ow4as a consequence of the coordination to the nitrogen atoms of two HDap ligands. The extended inter-H-bond interactions between water molecules and nucleobase moieties, play crucial role in the crystal packing of complexes.",

keywords = "H-bonding, Metal–nucleobase complexes, Molecular recognition",

author = "Khaled Hassanein and F{\'e}lix Zamora and Oscar Castillo and Pilar Amo-Ochoa",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2016",

doi = "10.1016/j.ica.2016.02.032",

language = "English",

volume = "452",

pages = "251--257",

journal = "Inorganica Chimica Acta",

issn = "0020-1693",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Supramolecular interactions in Cobalt(II)–nucleobases complexes

T2 - A methyl matter

AU - Hassanein, Khaled

AU - Zamora, Félix

AU - Castillo, Oscar

AU - Amo-Ochoa, Pilar

PY - 2016

Y1 - 2016

N2 - Direct reactions between cobalt(II) acetate and the corresponding modified nucleobase lead to the mononuclear complexes [Co(TAcO)2(H2O)4] (1) and [Co(UAcO)2(H2O)4] (2), (TAcO = thymine-1-acetate, UAcO = uracil-1-acetate). Additionally the reactions between the Co(II) salt with equimolar amount of 2,6-diaminopurine (HDap) and either TAcOH or UAcOH give rise to {[Co(HDap)2(H2O)4]·(TAcO)2·3H2O} (3) and {[Co(HDap)2(H2O)4]·(UAcO)2·3H2O} (4), respectively. The X-ray analysis of all of these complexes show a common feature, the presence of four water molecules in the basal plane coordinated to the Co(II) center. In case of complexes 1 and 2 the coordination environment around the Co(II) is a CoO2Ow4with two modified nucleobases coordinated in a monodentate way through one oxygen of the carboxylate group, whereas for 3 and 4 the coordination environment is CoN2Ow4as a consequence of the coordination to the nitrogen atoms of two HDap ligands. The extended inter-H-bond interactions between water molecules and nucleobase moieties, play crucial role in the crystal packing of complexes.

AB - Direct reactions between cobalt(II) acetate and the corresponding modified nucleobase lead to the mononuclear complexes [Co(TAcO)2(H2O)4] (1) and [Co(UAcO)2(H2O)4] (2), (TAcO = thymine-1-acetate, UAcO = uracil-1-acetate). Additionally the reactions between the Co(II) salt with equimolar amount of 2,6-diaminopurine (HDap) and either TAcOH or UAcOH give rise to {[Co(HDap)2(H2O)4]·(TAcO)2·3H2O} (3) and {[Co(HDap)2(H2O)4]·(UAcO)2·3H2O} (4), respectively. The X-ray analysis of all of these complexes show a common feature, the presence of four water molecules in the basal plane coordinated to the Co(II) center. In case of complexes 1 and 2 the coordination environment around the Co(II) is a CoO2Ow4with two modified nucleobases coordinated in a monodentate way through one oxygen of the carboxylate group, whereas for 3 and 4 the coordination environment is CoN2Ow4as a consequence of the coordination to the nitrogen atoms of two HDap ligands. The extended inter-H-bond interactions between water molecules and nucleobase moieties, play crucial role in the crystal packing of complexes.

KW - H-bonding

KW - Metal–nucleobase complexes

KW - Molecular recognition

UR - https://www.scopus.com/pages/publications/84961168730

U2 - 10.1016/j.ica.2016.02.032

DO - 10.1016/j.ica.2016.02.032

M3 - Article

AN - SCOPUS:84961168730

SN - 0020-1693

VL - 452

SP - 251

EP - 257

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

ER -

Supramolecular interactions in Cobalt(II)–nucleobases complexes: A methyl matter

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this