Two dinuclear pyrophosphate-bridged copper(II) complexes displaying unusually strong OHO interactions

The crystal and molecular structures of two copper(II) dinuclear complexes bridged by the inorganic pyrophosphate tetraanion, namely, [Cu(bipy)(cis-H 2P 2O 7)] 2·3H 2O 1 and [Cu 2(terpy) 2(HP 2O 7)] ·2H 2O(OH) 2, are reported (bipy = 2,2′-pyridine; terpy = 2,2′:6′,2″-terpyridine). Both compounds are...

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Detalles Bibliográficos
Publicado: 2012
Materias:
π-π bonds
Binuclear copper(II) complex
Crystal structure
EPR
H-bonds
Pyrophosphate-bridge
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13877003_v22_n_p141_Perec
http://hdl.handle.net/20.500.12110/paper_13877003_v22_n_p141_Perec
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_13877003_v22_n_p141_Perec
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spelling paper:paper_13877003_v22_n_p141_Perec2025-07-30T18:48:45Z Two dinuclear pyrophosphate-bridged copper(II) complexes displaying unusually strong OHO interactions π-π bonds Binuclear copper(II) complex Crystal structure EPR H-bonds Pyrophosphate-bridge The crystal and molecular structures of two copper(II) dinuclear complexes bridged by the inorganic pyrophosphate tetraanion, namely, [Cu(bipy)(cis-H 2P 2O 7)] 2·3H 2O 1 and [Cu 2(terpy) 2(HP 2O 7)] ·2H 2O(OH) 2, are reported (bipy = 2,2′-pyridine; terpy = 2,2′:6′,2″-terpyridine). Both compounds are characterized by two very strong OHO interactions which play a fundamental role in their crystal structure building. Compound 1 is identical to the recently reported compound 1a (Marino et al. Inorg. Chem. 50 (2011) 378-389), except for the supramolecular interaction which is revised in the present communication. Analysis of our data for 1 reveals the existence of a strong double well OH-O′ ↔ O-(HO)′ interaction around an inversion center (OO: 2.433(2) Å), which binds dinuclear units together into [100] polymeric chains. Dinuclear compound 2 is monoclinic, halved by a twofold axis bisecting it through the central O atom of the bridge. The extreme disorder found in the solvates in 2 prevented an accurate description of the solvato content, and a detailed analysis of the H-bonding scheme. However, the extremely short O-O = 2.473(2) Å intermolecular distance points to a (quasi) symmetrical OHO interaction. © 2012 Elsevier B.V. All rights reserved. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13877003_v22_n_p141_Perec http://hdl.handle.net/20.500.12110/paper_13877003_v22_n_p141_Perec
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic π-π bonds
Binuclear copper(II) complex
Crystal structure
EPR
H-bonds
Pyrophosphate-bridge
spellingShingle π-π bonds
Binuclear copper(II) complex
Crystal structure
EPR
H-bonds
Pyrophosphate-bridge
Two dinuclear pyrophosphate-bridged copper(II) complexes displaying unusually strong OHO interactions
topic_facet π-π bonds
Binuclear copper(II) complex
Crystal structure
EPR
H-bonds
Pyrophosphate-bridge
description The crystal and molecular structures of two copper(II) dinuclear complexes bridged by the inorganic pyrophosphate tetraanion, namely, [Cu(bipy)(cis-H 2P 2O 7)] 2·3H 2O 1 and [Cu 2(terpy) 2(HP 2O 7)] ·2H 2O(OH) 2, are reported (bipy = 2,2′-pyridine; terpy = 2,2′:6′,2″-terpyridine). Both compounds are characterized by two very strong OHO interactions which play a fundamental role in their crystal structure building. Compound 1 is identical to the recently reported compound 1a (Marino et al. Inorg. Chem. 50 (2011) 378-389), except for the supramolecular interaction which is revised in the present communication. Analysis of our data for 1 reveals the existence of a strong double well OH-O′ ↔ O-(HO)′ interaction around an inversion center (OO: 2.433(2) Å), which binds dinuclear units together into [100] polymeric chains. Dinuclear compound 2 is monoclinic, halved by a twofold axis bisecting it through the central O atom of the bridge. The extreme disorder found in the solvates in 2 prevented an accurate description of the solvato content, and a detailed analysis of the H-bonding scheme. However, the extremely short O-O = 2.473(2) Å intermolecular distance points to a (quasi) symmetrical OHO interaction. © 2012 Elsevier B.V. All rights reserved.
title Two dinuclear pyrophosphate-bridged copper(II) complexes displaying unusually strong OHO interactions
title_short Two dinuclear pyrophosphate-bridged copper(II) complexes displaying unusually strong OHO interactions
title_full Two dinuclear pyrophosphate-bridged copper(II) complexes displaying unusually strong OHO interactions
title_fullStr Two dinuclear pyrophosphate-bridged copper(II) complexes displaying unusually strong OHO interactions
title_full_unstemmed Two dinuclear pyrophosphate-bridged copper(II) complexes displaying unusually strong OHO interactions
title_sort two dinuclear pyrophosphate-bridged copper(ii) complexes displaying unusually strong oho interactions
publishDate 2012
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13877003_v22_n_p141_Perec
http://hdl.handle.net/20.500.12110/paper_13877003_v22_n_p141_Perec
_version_ 1840328170289496064

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