نتایج جستجو برای: lewis
تعداد نتایج: 17768 فیلتر نتایج به سال:
A step forward in gold-silver metallophilicity. An AuAg4 moiety with a square pyramidal arrangement.
By reaction of the Lewis base NBu4[Au(3,5-C6F3Cl2)2] and AgCF3COO in the presence of NBu4CF3COO the heterometallic compound (NBu4)2[Au(3,5-C6F3Cl22Ag4(CF3COO)5] (2) is obtained. The structure displays an unprecendented square pyramidal AuAg4 arrangement built up through four AuAg closed-shell interactions and two Au-C-Ag 3c-2e- bridges.
Carbohydrate antigen sialyl Lewis a (CA19-9) is the most frequently applied serum tumor marker for diagnosis of cancers in the digestive organs. Recent progress disclosed the presence of a normal counterpart of the determinant, namely disialyl Lewis a, which is predominantly expressed in non-malignant epithelial cells of the digestive organs, while sialyl Lewis a is preferentially expressed in ...
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