The aryl(imino)stannylene MesTer[N(IDipp)]Sn could be obtained by treating NHILi (NHI=N(IDipp), IDipp=C[N-(2,6-iPr2C6H3)CH]2) with MesTerSnCl (MesTer=2,6-Mes2C6H3) and offers a unique reactivity pattern compared to conventional single site tetrylene catalyzed CO2 reduction reactions. Sn(II) center, stabilized the NHI ligand enabled sequestration valorization of C1 feedstock stoichiometrically, ...

The nonexcitonic character for organometal trihalide perovskites is demonstrated by examining the field-dependent exciton dissociation behavior. It is found that photogenerated excitons can be effectively dissociated into free charges inside perovskite without the assistance of charge extraction layer or external field, which is a stark contrast to the charge-separation behavior in excitonic ma...

A multispectral anti-reflective coating of high radiation strength for laser applications in the IR spectrum nonlinear ZnGeP2 crystals has been developed first time. The was constructed using YbF3/ZnS. obtained by a novel approach ion-beam deposition these materials on substrate. It LIDT more than 2 J/cm2. Optimal layer regimes were found film density and low absorption, good adhesion to substr...

The reading of four subjects suffering from a phonological reading impairment as a result of a cerebral lesion was tested. A double dissociation observed in their results is strong evidence for the existence of two functionally independent kinds of phonological processing in reading--a graphemic and a phonetic one.

Propene dissociation channels were characterized by ab initio CCSD(T)/6-311++g(d,p) calculations. Inthis work the detailed mechanism of propene dissociation to C2H4+CH2, C2H2+H+CH3, C2H2+CH4 andC3H3+H2+H have been investigated. According to our calculations, ten fragments can be classified intofive dissociated channels. Our results point out that two mechanisms come into play in the H2 eliminat...

The acid dissociation constants of the hydroxyl groups in 25, 26, 27, 28-tetrahydroxy-5, 11, 17, 23-tetrasulphonic-calix[4]arene (SC4) were determined at 25οC by a combination of potentiometric and spectrophotometric titration method. The first and second acid dissociation constants (pKa1, pKa2) were found to be 3.19 and 12.1, which demonstrated pKa shift due to intramolecular hydrogen bonding ...

It is sometimes assumed that double dissociations between performance in Tasks A and B indicate that different underlying cognitive mechanisms are implicated in each task. According to this viewpoint, double dissociations are a powerful tool for probing the modularity of the mind. The validity of the double dissociation inference, and related inferences has been widely discussed (e.g., Dunn and...

We used positron emission tomography (PET) to answer the following question: Is working memory a unitary storage system, or does it instead include different storage buffers for different kinds of information? In Experiment 1, PET measures were taken while subjects engaged in either a spatial-memory task (retain the position of three dots for 3 sec) or an object-memory task (retain the identity...

One of the aims of cognitive (neuro)psychology is to characterize the nature of, and the relationships between, mental processes underlying human behavior (c.f. Dunn & Kirsner, this issue). In this context, the double dissociation (DD) paradigm has played an important albeit debated role. In our efforts to come up with a clear and positive contribution to this discussion, which sometimes appear...