2011
DOI: 10.1039/c0ce00424c
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Anion-dependent crystallization of zinc complexes with the ligand 4′,5′-diaza-9′-(4,5-disubstituted-1,3-dithiol-2-ylidene) fluorene: Structures and spectroscopic properties

Abstract: A series of zinc(II) complexes (1-6) with the ligands 4 0 ,5 0 -diaza-9 0 -(4,5-bis(methylthio)-1,3-dithiol-2ylidene) fluorene (L 1 ) or 4 0 ,5 0 -diaza-9 0 -(4,5-bis(ethylthio)-1,3-dithiol-2-ylidene) fluorene (L 2 ) have been prepared in the presence of different zinc(II) salts, 5), and [Zn(L 2 ) 2 (ClO 4 ) 2 ] (6). Five of the complexes (1-3, 5, and 6) have been structurally characterized by single-crystal X-ray diffraction. The preferred coordination geometry of the zinc(II) center is related to the coordin… Show more

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Cited by 10 publications
(8 citation statements)
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“…Normally, ZnO nanoparticles have a broad size distribution because of the imprecision of the hydrolysis reaction of either their sol–gel reactions, microemulsion process, or hydrothermal reactions. For Zn-based clusters synthesized by typical cluster formation methods, the size of individual components can be well-controlled; however, the products are generally obtained as a crystalline material. From the Zn-BA cluster example demonstrated in this work, the individual cluster is small and monodisperse in size, but its crystalline nature leads to crystallites that are problematic in film fabrication and high-resolution patterning.…”
Section: Resultsmentioning
confidence: 99%
“…Normally, ZnO nanoparticles have a broad size distribution because of the imprecision of the hydrolysis reaction of either their sol–gel reactions, microemulsion process, or hydrothermal reactions. For Zn-based clusters synthesized by typical cluster formation methods, the size of individual components can be well-controlled; however, the products are generally obtained as a crystalline material. From the Zn-BA cluster example demonstrated in this work, the individual cluster is small and monodisperse in size, but its crystalline nature leads to crystallites that are problematic in film fabrication and high-resolution patterning.…”
Section: Resultsmentioning
confidence: 99%
“…25 The input geometries for DFT energy minimization were adapted as such, and the obtained molecular structures and relative Δ G values are presented in Figure 1.…”
Section: Resultsmentioning
confidence: 99%
“…The metal-to-nitrogen bond lengths and diazafluorenyl bite angles in the DFT optimized complexes of stable L1 closely resemble those found in the crystal structures of related metal–ligand complexes. 24,25 The M–N bond lengths in the calculated zinc, palladium, and platinum complexes of the stable ligand are about 2.19, 2.09, and 2.07 Å, respectively (cf. 2.13, 2.08, and 2.06 Å in the reported solid state structures of 4,5-diazafluorene complexes).…”
Section: Resultsmentioning
confidence: 99%
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