Analysis of weak interactions in the crystal packing of inorganic metalorganic hybrids based on Keggin polyoxometalates and dinuclear copper(II)-acetate complexes.
Reaction of in situ generated copper-monosubstituted Keggin polyoxometalate (POM) and copper-phenanthroline complexes in potassium or sodium acetate buffers led to the formation of the potassium salt of [[SiW(11)O(39)Cu(H(2)O)][Cu(2)(phen)(2)(H(2)O)(ac)(2)]](4-) (1) and [[Si(2)W(22)Cu(2)O(78)(H(2)O)][u(2)(phen)(2)(H(2)O)(ac)(2)](2)](8-) (2, where phen = phenanthroline and ac = acetate) hybrid polyanions, respectively. Both compounds are the first discrete mono- and bimolecular transition-metal-substituted Keggin POMs that support a binuclear copper-acetate complex. Despite the different nature of the POMs, the crystal packing of the two compounds is closely related, being formed of hybrid parallel layers that give rise to an alternate sequence of inorganic and metalorganic regions. This packing type seems to be determined by the extensive network of weak intermolecular interactions established by the dicopper complexes, as a Hirshfeld surface analysis shows. Electron paramagnetic resonance studies indicate that both the supported [Cu(2)(ac)(2)(phen)(2)(H(2)O)](2+) complexes and the copper(II)-monosubstituted POMs are magnetically isolated.
Reinoso
Santiago
S
Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Bilbao, Spain.
Vitoria
Pablo
P
Felices
Leire San
LS
Lezama
Luis
L
Gutiérrez-Zorrilla
Juan M
JM
D000085:Acetates / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D003460:Crystallization; D018360:Crystallography, X-Ray; D004578:Electron Spin Resonance Spectroscopy; D008958:Models, Molecular; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D010618:Phenanthrolines / Q000737:chemistry; D012680:Sensitivity and Specificity; D017973:Tungsten Compounds / Q000737:chemistry*
D000085:Acetates; D009942:Organometallic Compounds; D010618:Phenanthrolines; D017973:Tungsten Compounds; D003300:Copper