Synthesis of hetero- and homo-multinuclear complexes with a tetracyanonickelate anion: structural characterization [Cu(bcen)Ni(CN)4]2

Two new complexes [Cu(bcen)Ni(CN)4]2 (1) and [Ni(bcen)Ni(CN)4] (2) where bcen is 4,7-diazadecanediamide, were synthesized by reaction of equimolar amounts of M(NO3)2 (M = Cu and Ni), bcen ligand and K2[Ni(CN)4]. Single-crystal X-ray diffraction analysis of compound 1, shows that the bcen ligand acts...

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Main Authors: Rasoul Vafazadeh, Amin Dehghani-Firouzabadi, Anthony C. Willis
Format: Article
Language:English
Published: Slovenian Chemical Society 2017-09-01
Series:Acta Chimica Slovenica
Subjects:
Online Access:https://journals.matheo.si/index.php/ACSi/article/view/3577
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author Rasoul Vafazadeh
Amin Dehghani-Firouzabadi
Anthony C. Willis
author_facet Rasoul Vafazadeh
Amin Dehghani-Firouzabadi
Anthony C. Willis
author_sort Rasoul Vafazadeh
collection DOAJ
description Two new complexes [Cu(bcen)Ni(CN)4]2 (1) and [Ni(bcen)Ni(CN)4] (2) where bcen is 4,7-diazadecanediamide, were synthesized by reaction of equimolar amounts of M(NO3)2 (M = Cu and Ni), bcen ligand and K2[Ni(CN)4]. Single-crystal X-ray diffraction analysis of compound 1, shows that the bcen ligand acts as a tridentate chelate, coordinating to the Cu(II) ion via the two nitrogen atoms of the amine groups and one oxygen atom of one amide group, and the other amide unit is left uncoordinated. The coordination geometry around the Cu(II) ions is five coordinate with a distorted square pyramid geometry, comprising two nitrogen atoms and one oxygen atom belonging to the bcen ligand and two nitrogen atoms of the cyano groups of two Ni(CN)42– units.  The distance between the copper ion and the amide oxygen of the dangling arm of an adjacent tetranuclear species is within the expected range for an axial Cu–O bond, and hence suggests that the amide oxygen of an adjacent tetranuclear complex may weakly coordinate to the copper ion in an axial position. These contacts link the tetranuclear species into infinite chain polymers.
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spelling doaj.art-081d391a65594d28934f5bf72b2d74b92022-12-22T01:50:03ZengSlovenian Chemical SocietyActa Chimica Slovenica1318-02071580-31552017-09-0164368669110.17344/acsi.2017.3577495Synthesis of hetero- and homo-multinuclear complexes with a tetracyanonickelate anion: structural characterization [Cu(bcen)Ni(CN)4]2Rasoul Vafazadeh0Amin Dehghani-FirouzabadiAnthony C. WillisYazd UniversityTwo new complexes [Cu(bcen)Ni(CN)4]2 (1) and [Ni(bcen)Ni(CN)4] (2) where bcen is 4,7-diazadecanediamide, were synthesized by reaction of equimolar amounts of M(NO3)2 (M = Cu and Ni), bcen ligand and K2[Ni(CN)4]. Single-crystal X-ray diffraction analysis of compound 1, shows that the bcen ligand acts as a tridentate chelate, coordinating to the Cu(II) ion via the two nitrogen atoms of the amine groups and one oxygen atom of one amide group, and the other amide unit is left uncoordinated. The coordination geometry around the Cu(II) ions is five coordinate with a distorted square pyramid geometry, comprising two nitrogen atoms and one oxygen atom belonging to the bcen ligand and two nitrogen atoms of the cyano groups of two Ni(CN)42– units.  The distance between the copper ion and the amide oxygen of the dangling arm of an adjacent tetranuclear species is within the expected range for an axial Cu–O bond, and hence suggests that the amide oxygen of an adjacent tetranuclear complex may weakly coordinate to the copper ion in an axial position. These contacts link the tetranuclear species into infinite chain polymers.https://journals.matheo.si/index.php/ACSi/article/view/3577Cyano bridgedMultinucleardiamine-diamideCrystal structuretetracyanonickelate
spellingShingle Rasoul Vafazadeh
Amin Dehghani-Firouzabadi
Anthony C. Willis
Synthesis of hetero- and homo-multinuclear complexes with a tetracyanonickelate anion: structural characterization [Cu(bcen)Ni(CN)4]2
Acta Chimica Slovenica
Cyano bridged
Multinuclear
diamine-diamide
Crystal structure
tetracyanonickelate
title Synthesis of hetero- and homo-multinuclear complexes with a tetracyanonickelate anion: structural characterization [Cu(bcen)Ni(CN)4]2
title_full Synthesis of hetero- and homo-multinuclear complexes with a tetracyanonickelate anion: structural characterization [Cu(bcen)Ni(CN)4]2
title_fullStr Synthesis of hetero- and homo-multinuclear complexes with a tetracyanonickelate anion: structural characterization [Cu(bcen)Ni(CN)4]2
title_full_unstemmed Synthesis of hetero- and homo-multinuclear complexes with a tetracyanonickelate anion: structural characterization [Cu(bcen)Ni(CN)4]2
title_short Synthesis of hetero- and homo-multinuclear complexes with a tetracyanonickelate anion: structural characterization [Cu(bcen)Ni(CN)4]2
title_sort synthesis of hetero and homo multinuclear complexes with a tetracyanonickelate anion structural characterization cu bcen ni cn 4 2
topic Cyano bridged
Multinuclear
diamine-diamide
Crystal structure
tetracyanonickelate
url https://journals.matheo.si/index.php/ACSi/article/view/3577
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