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

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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)4/2F2/2]+, [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) 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 languageEnglish
Pages (from-to)479-485
Number of pages7
JournalZeitschrift fur Anorganische und Allgemeine Chemie
Volume622
Issue number3
Publication statusPublished - 1996

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Pyrazines
Crystals
Anions
Single crystals

Keywords

  • Copper niobium pyrazine complexes
  • Crystal structures
  • Syntheses

ASJC Scopus subject areas

  • Inorganic Chemistry

Cite this

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 journalArticle

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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.",
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N2 - 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)4/2F2/2]+, [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) 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.

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