Syntheses and structures of two new Cu/Nb/pyrazine complexes: Three dimensional CuNb(pyz)2OF5 · (pyz)(H2O) and two dimensional [Cu(pyz)2.5]+[NbF6]- · (pyz)

Paramasivan Halasyamani; Kevin R. Heier; Michael J. Willis; Charlotte L. Stern; Kenneth R Poeppelmeier

Syntheses and structures of two new Cu/Nb/pyrazine complexes: Three dimensional CuNb(pyz)₂OF₅ · (pyz)(H₂O) and two dimensional [Cu(pyz)_2.5]⁺[NbF₆]^- · (pyz)

Paramasivan Halasyamani, Kevin R. Heier, Michael J. Willis, Charlotte L. Stern, Kenneth R Poeppelmeier

Northwestern University

Research output: Contribution to journal › Article

41 Citations (Scopus)

Abstract

Crystals of CuNb(pyz)₂OF₅·(pyz)(H₂O) (1) and [Cu(pyz)_2.5]⁺[NbF₆]^-·(pyz) (2) were grown (150°C and autogeneous pressures) from CuO, 1/2(Nb₂O₅), (HF)_x·pyridine, and H₂O in excess pyrazine. Light blue single crystals of (1) are orthorhombic, crystallizing in space group Cccm (No. 66), with a = 14.547(1) Å, b = 16.135(2) Å, c = 13.803(2) Å, and Z = 8. The structure of (1) contains corner shared [Cu(pyz)_4/2F_2/2]⁺, [Cu(pyz)_4/2O_2/2], and [NbF₄O_1/2F_1/2]^-0.5 octahedra. Orange crystals of (2) are monoclinic, crystallizing in space group C2/c (No. 15), with a = 11.792(8) Å, b = 17.123(3) Å, c = 17.051(5) Å, β = 90.04(4)°, and Z = 8. The structure of (2) contains puckered rings of corner shared [Cu(pyz)(pyz)_3/2]⁺ tetrahedra and isolated [NbF₆]^- anions within the rings.

Original language	English
Pages (from-to)	479-485
Number of pages	7
Journal	Zeitschrift fur Anorganische und Allgemeine Chemie
Volume	622
Issue number	3
Publication status	Published - 1996

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Keywords

Copper niobium pyrazine complexes
Crystal structures
Syntheses

ASJC Scopus subject areas

Inorganic Chemistry

Cite this

Halasyamani, P., Heier, K. R., Willis, M. J., Stern, C. L., & Poeppelmeier, K. R. (1996). Syntheses and structures of two new Cu/Nb/pyrazine complexes: Three dimensional CuNb(pyz)₂OF₅ · (pyz)(H₂O) and two dimensional [Cu(pyz)_2.5]⁺[NbF₆]^- · (pyz). Zeitschrift fur Anorganische und Allgemeine Chemie, 622(3), 479-485.

Syntheses and structures of two new Cu/Nb/pyrazine complexes : Three dimensional CuNb(pyz)₂OF₅ · (pyz)(H₂O) and two dimensional [Cu(pyz)_2.5]⁺[NbF₆]^- · (pyz). / Halasyamani, Paramasivan; Heier, Kevin R.; Willis, Michael J.; Stern, Charlotte L.; Poeppelmeier, Kenneth R.

In: Zeitschrift fur Anorganische und Allgemeine Chemie, Vol. 622, No. 3, 1996, p. 479-485.

Research output: Contribution to journal › Article

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title = "Syntheses and structures of two new Cu/Nb/pyrazine complexes: Three dimensional CuNb(pyz)2OF5 · (pyz)(H2O) and two dimensional [Cu(pyz)2.5]+[NbF6]- · (pyz)",

abstract = "Crystals of CuNb(pyz)2OF5·(pyz)(H2O) (1) and [Cu(pyz)2.5]+[NbF6]-·(pyz) (2) were grown (150°C and autogeneous pressures) from CuO, 1/2(Nb2O5), (HF)x·pyridine, and H2O in excess pyrazine. Light blue single crystals of (1) are orthorhombic, crystallizing in space group Cccm (No. 66), with a = 14.547(1) {\AA}, b = 16.135(2) {\AA}, c = 13.803(2) {\AA}, and Z = 8. The structure of (1) contains corner shared [Cu(pyz)4/2F2/2]+, [Cu(pyz)4/2O2/2], and [NbF4O1/2F1/2]-0.5 octahedra. Orange crystals of (2) are monoclinic, crystallizing in space group C2/c (No. 15), with a = 11.792(8) {\AA}, b = 17.123(3) {\AA}, c = 17.051(5) {\AA}, β = 90.04(4)°, and Z = 8. The structure of (2) contains puckered rings of corner shared [Cu(pyz)(pyz)3/2]+ tetrahedra and isolated [NbF6]- anions within the rings.",

keywords = "Copper niobium pyrazine complexes, Crystal structures, Syntheses",

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