Synthesis and molecular structure of [Cu(NH3)4][Ni(CN)4]: A missing piece in the [Cu(NH3)n][Ni(CN)4] story

Dina Solanki; Graeme Hogarth

doi:10.1016/j.molstruc.2015.06.038

Synthesis and molecular structure of [Cu(NH₃)₄][Ni(CN)₄]: A missing piece in the [Cu(NH₃)_n][Ni(CN)₄] story

Dina Solanki, Graeme Hogarth^*

^*Corresponding author for this work

Chemistry

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

3 Citations (Scopus)

Abstract

Abstract Reaction of CuCl₂·2H₂O and K₂[Ni(CN)₄]·2H₂O in aqueous ammonia gave blue rod-like crystals of [Cu(NH₃)₄][Ni(CN)₄]. An X-ray crystallographic reveals that square-planar anions and cations are weakly associated through coordination of a cis pair of cyanide ligands to copper, with one short and one long contact and thus the copper centre is best described as a square-based pyramid. Crystals lose ammonia readily upon removal from the solvent and this has been probed by TGA and DSC measurements. For comparison we have also re-determined the structure of the related ethylenediamine (en) complex [Cu(en)₂][Ni(CN)₄] at 150 K. This consists of a 1D chain in which a trans pair of cyanide ligands bind to copper such that the latter has an overall tetragonally distorted octahedral coordination geometry.

Original language	English
Article number	21590
Pages (from-to)	388-392
Number of pages	5
Journal	JOURNAL OF MOLECULAR STRUCTURE
Volume	1099
DOIs	https://doi.org/10.1016/j.molstruc.2015.06.038
Publication status	Published - 7 Jul 2015

Keywords

Amine
Copper
Cyanide
Intermolecular
Nickel
X-ray crystal structures

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10.1016/j.molstruc.2015.06.038

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title = "Synthesis and molecular structure of [Cu(NH3)4][Ni(CN)4]: A missing piece in the [Cu(NH3)n][Ni(CN)4] story",

abstract = "Abstract Reaction of CuCl2·2H2O and K2[Ni(CN)4]·2H2O in aqueous ammonia gave blue rod-like crystals of [Cu(NH3)4][Ni(CN)4]. An X-ray crystallographic reveals that square-planar anions and cations are weakly associated through coordination of a cis pair of cyanide ligands to copper, with one short and one long contact and thus the copper centre is best described as a square-based pyramid. Crystals lose ammonia readily upon removal from the solvent and this has been probed by TGA and DSC measurements. For comparison we have also re-determined the structure of the related ethylenediamine (en) complex [Cu(en)2][Ni(CN)4] at 150 K. This consists of a 1D chain in which a trans pair of cyanide ligands bind to copper such that the latter has an overall tetragonally distorted octahedral coordination geometry.",

keywords = "Amine, Copper, Cyanide, Intermolecular, Nickel, X-ray crystal structures",

author = "Dina Solanki and Graeme Hogarth",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

year = "2015",

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doi = "10.1016/j.molstruc.2015.06.038",

language = "English",

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TY - JOUR

T1 - Synthesis and molecular structure of [Cu(NH3)4][Ni(CN)4]

T2 - A missing piece in the [Cu(NH3)n][Ni(CN)4] story

AU - Solanki, Dina

AU - Hogarth, Graeme

PY - 2015/7/7

Y1 - 2015/7/7

N2 - Abstract Reaction of CuCl2·2H2O and K2[Ni(CN)4]·2H2O in aqueous ammonia gave blue rod-like crystals of [Cu(NH3)4][Ni(CN)4]. An X-ray crystallographic reveals that square-planar anions and cations are weakly associated through coordination of a cis pair of cyanide ligands to copper, with one short and one long contact and thus the copper centre is best described as a square-based pyramid. Crystals lose ammonia readily upon removal from the solvent and this has been probed by TGA and DSC measurements. For comparison we have also re-determined the structure of the related ethylenediamine (en) complex [Cu(en)2][Ni(CN)4] at 150 K. This consists of a 1D chain in which a trans pair of cyanide ligands bind to copper such that the latter has an overall tetragonally distorted octahedral coordination geometry.

AB - Abstract Reaction of CuCl2·2H2O and K2[Ni(CN)4]·2H2O in aqueous ammonia gave blue rod-like crystals of [Cu(NH3)4][Ni(CN)4]. An X-ray crystallographic reveals that square-planar anions and cations are weakly associated through coordination of a cis pair of cyanide ligands to copper, with one short and one long contact and thus the copper centre is best described as a square-based pyramid. Crystals lose ammonia readily upon removal from the solvent and this has been probed by TGA and DSC measurements. For comparison we have also re-determined the structure of the related ethylenediamine (en) complex [Cu(en)2][Ni(CN)4] at 150 K. This consists of a 1D chain in which a trans pair of cyanide ligands bind to copper such that the latter has an overall tetragonally distorted octahedral coordination geometry.

KW - Amine

KW - Copper

KW - Cyanide

KW - Intermolecular

KW - Nickel

KW - X-ray crystal structures

UR - http://www.scopus.com/inward/record.url?scp=84936886736&partnerID=8YFLogxK

U2 - 10.1016/j.molstruc.2015.06.038

DO - 10.1016/j.molstruc.2015.06.038

M3 - Article

AN - SCOPUS:84936886736

SN - 0022-2860

VL - 1099

SP - 388

EP - 392

JO - JOURNAL OF MOLECULAR STRUCTURE

JF - JOURNAL OF MOLECULAR STRUCTURE

M1 - 21590

ER -

Synthesis and molecular structure of [Cu(NH₃)₄][Ni(CN)₄]: A missing piece in the [Cu(NH₃)_n][Ni(CN)₄] story

Abstract

Keywords

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