Nisbet ML, Hiralal E, Poeppelmeier KR. Crystal structures of three copper(II)-2,2'-bi-pyridine (bpy) compounds, [Cu(bpy)
2(H
2O)][SiF
6]·4H
2O, [Cu(bpy)
2(TaF
6)
2] and [Cu(bpy)
3][TaF
6]
2 and a related coordination polymer, [Cu(bpy)(H
2O)
2SnF
6]
n.
Acta Crystallogr E Crystallogr Commun 2021;
77:158-164. [PMID:
33614146 PMCID:
PMC7869541 DOI:
10.1107/s2056989021000633]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 01/19/2021] [Indexed: 01/06/2023]
Abstract
We report the hydro-thermal syntheses and crystal structures of aqua-bis-(2,2'-bi-pyridine-κ2 N,N')copper(II) hexa-fluorido-silicate tetra-hydrate, [Cu(bpy)2(H2O)][SiF6]·4H2O (bpy is 2,2'-bi-pyridine, C10H8N2), (I), bis-(2,2'-bi-pyridine-3κ2 N,N')-di-μ-fluorido-1:3κ2 F:F;2:3κ2 F:F-deca-fluorido-1κ5 F,2κ5 F-ditantalum(V)copper(II), [Cu(bpy)2(TaF6)2], (II), tris-(2,2'-bi-pyridine-κ2 N,N')copper(II) bis[hexa-fluorido-tantalate(V)], [Cu(bpy)3][TaF6]2, (III), and catena-poly[[di-aqua-(2,2'-bi-pyridine-κ2 N,N')copper(II)]-μ-fluorido-tetra-fluorido-tin-μ-fluorido], [Cu(bpy)(H2O)2SnF6] n , (IV). Compounds (I), (II) and (III) contain locally chiral copper coordination complexes with C 2, D 2, and D 3 symmetry, respectively. The extended structures of (I) and (IV) are consolidated by O-H⋯F and O-H⋯O hydrogen bonds. The structure of (III) was found to be a merohedral (racemic) twin.
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