The current study used model-based cluster analyses to determine if there are 2 distinct variants of adolescents (ages 11-18) high on callous-unemotional (CU) traits that differ on their level of anxiety and history of trauma. The sample (n = 272) consisted of clinic-referred youths who were primarily African American (90%) and who came from low-income families. Consistent with hypotheses, 3 cl...

In our working toward the rational design and synthesis of cluster-based supramolecular architectures, a set of new [WS4Cu4]- or [MoOS3Cu3]-based supramolecular assemblies have been prepared from reactions of preformed cluster compounds [Et4N]4[WS4Cu4I6] (1) and [(n-Bu)4N]2[MoOS3Cu3X3] (2, X = I; 3, X = SCN) with flexible ditopic ligands such as dipyridylsulfide (dps), dipyridyl disulfide (dpds...

We report here the crystal structure of yeast copper thionein (Cu-MT), determined at 1.44-A resolution. The Cu-MT structure shows the largest known oligonuclear Cu(I) thiolate cluster in biology, consisting of six trigonally and two digonally coordinated Cu(I) ions. This is at variance with the results from previous spectroscopic determinations, which were performed on MT samples containing sev...

Despite their geometric simplicity, the crystal structures L11 (CuPt) and L13 (CdPt3) do not appear as ground states experimentally, except in Cu-Pt. We investigate the possibility that these phases are ground states in other binary intermetallic systems, but overlooked experimentally. Via the synergy between high-throughput and cluster-expansion computational methods, we conduct a thorough sea...

Four novel Cu(II) complexes {Na[Cu(4)(hmp)(4)(CHOO)(3)](ClO(4))(2)·H(2)O}(n) (1), [Cu(8)(hmp)(8)(CH(3)COO)(6)](ClO(4))(2) (2), [Cu(4)(hmp)(4)(CH(3)CN)(2)(ClO(4))(2)(H(2)O)(2)](ClO(4))(2) (3), and [Cu(4)(hmp)(4)(CH(3)COO)(2)(H(2)O)(4)](ClO(4))(2)·2H(2)O (4) with Hhmp = 2-(hydroxymethyl)pyridine were prepared by structural modulation at room temperature. Taking advantage of the steric hindrance o...

Treatment of [Et(4)N][Tp*W(μ(3)-S)(3)(CuBr)(3)] (Tp* = hydridotris(3,5-dimethylpyrazol-1-yl)borate) (1) with an excess of α-methylpyridine (α-MePy) and NH(4)PF(6) in CH(2)Cl(2) afforded a cationic cluster [Tp*W(μ(3)-S)(3)Cu(3)(α-MePy)(3)(μ(3)-Br)](PF(6)) (2) while the reaction of 1 with an excess of 1,4-pyrazine (1,4-pyz) and NH(4)PF(6) in MeCN-CH(2)Cl(2) at 65 °C produced a polymeric cluster [...

In the crystal structure of the title compound, [Cu(3)Br(3)(C(26)H(24)P(2))(3)]·0.5CH(3)COCH(3), two of the Cu centers are bridged by two bromide anions forming a Cu(μ-Br)(2)Cu core, which is further bridged by a 1,2-bis-(diphenyl-phosphino)-ethane (dppe) ligand. The third Cu center is terminally bound to another bromide ligand and is connected to the other two Cu atoms by bridging dppe ligands...

Scanning tunnelling microscopy (STM) and X-ray photoelectron spectroscopy (XPS, AES) were used to study MOCVD of Cu-clusters on the mixed terminated ZnO(10% 10) surface in comparison to MBE Cu-deposition. Both deposition methods result in the same Cu cluster morphology. After annealing to 670 K the amount of Cu visible above the oxide surface is found to decrease substantially, indicating a sub...

Rat liver metallothionein contains two domains, each of which enfolds a separate metal-thiolate cluster. The binding stoichiometry of these clusters depends on the particular metal ion bound. In the aminoterminal beta domain the cluster can accommodate either three Cd(II) ions or six Cu(I) ions. The Cd ions are known to be coordinated in a tetrahedral geometry. In order to better understand the...

Nanometer size-selected Cu clusters in the size range of 1-5 nm have been produced by a plasma-gas-condensation-type cluster deposition apparatus, which combines a grow-discharge sputtering with an inert gas condensation technique. With this method, by controlling the experimental conditions, it was possible to produce nanoparticles with a strict control in size. The structure and size of Cu na...