BIS(MU-2-CYANOGUANIDINE)-BIS[(2-CYANOGUANIDINE)COPPER(I)] - A PLANAR DIMERIC CATION CONTAINING COORDINATIVELY UNSATURATED COPPER(I)

M J  BEGLEY; P  HUBBERSTEY; P H  WALTON

BIS(MU-2-CYANOGUANIDINE)-BIS[(2-CYANOGUANIDINE)COPPER(I)] - A PLANAR DIMERIC CATION CONTAINING COORDINATIVELY UNSATURATED COPPER(I)

M J BEGLEY, P HUBBERSTEY, P H WALTON

Chemistry

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

Abstract

The air- and moisture-stable copper(I) salts [Cu-2(mu-cnge)(2)(cnge)(2)]X . 2H(2)O (cnge = 2-cyanoguanidine; X = S2O62- or SO42-) have been prepared by sodium sulfite reduction of aqueous solutions of copper(II) chloride containing cnge. The two salts have been structurally characterised by single-crystal X-ray diffraction methods. The dithionate structure (triclinic, space group P ($) over bar 1, a = 7.320, b = 7.315, c =12.765 Angstrom, alpha = 97.10, beta = 118.91, gamma = 92.93 degrees) is more symmetrical than that of the sulfate (monoclinic, space group P2(1)/c, a = 6.920, b = 14.951, c = 21.042 Angstrom, beta = 95.17 degrees). Nonetheless, the two [Cu-2(mu-cnge)(2)(cnge)(2)](2+) cations are very similar. They contain two trigonal-planar copper(I) atoms bridged by two cnge molecules and terminally co-ordinated by a single cnge molecule. To minimise interaction between the in-plane pi systems of the bridging cnge molecules, the latter are separated by ca. 3.1 Angstrom and angled such that they lie on two essentially parallel planes separated by ca. 0.75 Angstrom. The perturbation of the IR spectrum of cnge on co-ordination is dependent not on the co-ordination type (bridging, terminal) but on the strength of its co-ordination to the metal.

Original language	English
Pages (from-to)	957-962
Number of pages	6
Journal	JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
Issue number	6
Publication status	Published - 21 Mar 1995

Keywords

RAY CRYSTAL-STRUCTURE
BRIDGING LIGANDS
BOND DISTANCES
COMPLEXES
BIS(DIPHENYLPHOSPHINO)METHANE
DICOPPER(I)
ANGLES

Cite this

@article{b035b9803c334eb3bf1288e15978077b,

title = "BIS(MU-2-CYANOGUANIDINE)-BIS[(2-CYANOGUANIDINE)COPPER(I)] - A PLANAR DIMERIC CATION CONTAINING COORDINATIVELY UNSATURATED COPPER(I)",

abstract = "The air- and moisture-stable copper(I) salts [Cu-2(mu-cnge)(2)(cnge)(2)]X . 2H(2)O (cnge = 2-cyanoguanidine; X = S2O62- or SO42-) have been prepared by sodium sulfite reduction of aqueous solutions of copper(II) chloride containing cnge. The two salts have been structurally characterised by single-crystal X-ray diffraction methods. The dithionate structure (triclinic, space group P ($) over bar 1, a = 7.320, b = 7.315, c =12.765 Angstrom, alpha = 97.10, beta = 118.91, gamma = 92.93 degrees) is more symmetrical than that of the sulfate (monoclinic, space group P2(1)/c, a = 6.920, b = 14.951, c = 21.042 Angstrom, beta = 95.17 degrees). Nonetheless, the two [Cu-2(mu-cnge)(2)(cnge)(2)](2+) cations are very similar. They contain two trigonal-planar copper(I) atoms bridged by two cnge molecules and terminally co-ordinated by a single cnge molecule. To minimise interaction between the in-plane pi systems of the bridging cnge molecules, the latter are separated by ca. 3.1 Angstrom and angled such that they lie on two essentially parallel planes separated by ca. 0.75 Angstrom. The perturbation of the IR spectrum of cnge on co-ordination is dependent not on the co-ordination type (bridging, terminal) but on the strength of its co-ordination to the metal.",

keywords = "RAY CRYSTAL-STRUCTURE, BRIDGING LIGANDS, BOND DISTANCES, COMPLEXES, BIS(DIPHENYLPHOSPHINO)METHANE, DICOPPER(I), ANGLES",

author = "BEGLEY, {M J} and P HUBBERSTEY and WALTON, {P H}",

year = "1995",

month = mar,

day = "21",

language = "English",

pages = "957--962",

journal = "JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS",

issn = "1472-7773",

publisher = "The Royal Society of Chemistry",

number = "6",

}

TY - JOUR

T1 - BIS(MU-2-CYANOGUANIDINE)-BIS[(2-CYANOGUANIDINE)COPPER(I)] - A PLANAR DIMERIC CATION CONTAINING COORDINATIVELY UNSATURATED COPPER(I)

AU - BEGLEY, M J

AU - HUBBERSTEY, P

AU - WALTON, P H

PY - 1995/3/21

Y1 - 1995/3/21

N2 - The air- and moisture-stable copper(I) salts [Cu-2(mu-cnge)(2)(cnge)(2)]X . 2H(2)O (cnge = 2-cyanoguanidine; X = S2O62- or SO42-) have been prepared by sodium sulfite reduction of aqueous solutions of copper(II) chloride containing cnge. The two salts have been structurally characterised by single-crystal X-ray diffraction methods. The dithionate structure (triclinic, space group P ($) over bar 1, a = 7.320, b = 7.315, c =12.765 Angstrom, alpha = 97.10, beta = 118.91, gamma = 92.93 degrees) is more symmetrical than that of the sulfate (monoclinic, space group P2(1)/c, a = 6.920, b = 14.951, c = 21.042 Angstrom, beta = 95.17 degrees). Nonetheless, the two [Cu-2(mu-cnge)(2)(cnge)(2)](2+) cations are very similar. They contain two trigonal-planar copper(I) atoms bridged by two cnge molecules and terminally co-ordinated by a single cnge molecule. To minimise interaction between the in-plane pi systems of the bridging cnge molecules, the latter are separated by ca. 3.1 Angstrom and angled such that they lie on two essentially parallel planes separated by ca. 0.75 Angstrom. The perturbation of the IR spectrum of cnge on co-ordination is dependent not on the co-ordination type (bridging, terminal) but on the strength of its co-ordination to the metal.

AB - The air- and moisture-stable copper(I) salts [Cu-2(mu-cnge)(2)(cnge)(2)]X . 2H(2)O (cnge = 2-cyanoguanidine; X = S2O62- or SO42-) have been prepared by sodium sulfite reduction of aqueous solutions of copper(II) chloride containing cnge. The two salts have been structurally characterised by single-crystal X-ray diffraction methods. The dithionate structure (triclinic, space group P ($) over bar 1, a = 7.320, b = 7.315, c =12.765 Angstrom, alpha = 97.10, beta = 118.91, gamma = 92.93 degrees) is more symmetrical than that of the sulfate (monoclinic, space group P2(1)/c, a = 6.920, b = 14.951, c = 21.042 Angstrom, beta = 95.17 degrees). Nonetheless, the two [Cu-2(mu-cnge)(2)(cnge)(2)](2+) cations are very similar. They contain two trigonal-planar copper(I) atoms bridged by two cnge molecules and terminally co-ordinated by a single cnge molecule. To minimise interaction between the in-plane pi systems of the bridging cnge molecules, the latter are separated by ca. 3.1 Angstrom and angled such that they lie on two essentially parallel planes separated by ca. 0.75 Angstrom. The perturbation of the IR spectrum of cnge on co-ordination is dependent not on the co-ordination type (bridging, terminal) but on the strength of its co-ordination to the metal.

KW - RAY CRYSTAL-STRUCTURE

KW - BRIDGING LIGANDS

KW - BOND DISTANCES

KW - COMPLEXES

KW - BIS(DIPHENYLPHOSPHINO)METHANE

KW - DICOPPER(I)

KW - ANGLES

M3 - Article

SN - 1472-7773

SP - 957

EP - 962

JO - JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS

JF - JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS

IS - 6

ER -