Dimolybdenum-Containing Molecular Triangles and Squares with Diamidate Linkers: Structural Diversity and Complexity
摘要:
By employing cis-Mo-2(DAniF)(2)(2+) (DAniF = N,N'-di(p-anisyl)formamidinate) as the vertex building block and terephthaloyldiamidate as the linker, four dimolybdenum-containing cyclic oligomers have been synthesized and structurally characterized. In these compounds, described by the general formula [CiS-Mo-2(DAniF)(2)((ArNOC)(2)C6H4)(2)](n), n = 3 and 4, the geometry and composition of the products are affected by the identity of the aromatic groups of the linker. When Ar = phenyl, n = 3 (1a and 1b); however, n = 4 for Ar = p-trifluoromethylphenyl (2) and when Ar = m-trifluoromethylphenyl (3). All these compounds have a central cavity, shaped by the diamidate linker, that is capable of serving as host to guest molecules in a selective manner. For compounds 2 and 3, self-assembly that takes place in the crystalline state entails intermolecular C-(HF)-F-...-C interactions. Such interactions generate a one-dimensional network with a tunnel cross section of 10 x 10 angstrom(2) in 2, whereas in 3, they result in a cage in which two THF molecules are encapsulated. The (FH)-H-... distances vary in a broad range from 2.38 to 2.70 angstrom.
The First Designed Syntheses of Bis-dimetal Molecules in Which the Bridges Are Diamidate Ligands
作者:F. Albert Cotton、Lee M. Daniels、James P. Donahue、Chun Y. Liu、Carlos A. Murillo
DOI:10.1021/ic025503f
日期:2002.3.1
The first deliberate syntheses of molecules in which pairs of quadruply bonded Mo-2 units are bridged by N,N'-diarylterephthaloyldiamidate (aryl = Ph, m-CF3Ph) ligands are described. The addition of neutral N,N'-diarylterephthaloyldiamide to 2 equiv of [Mo-2(DAniF)(3)(MeCN)(2)](+) (DAniF = N,N'-di-p-anisylformamidinate) followed by the introduction of excess H3CO- in MeCN results in the formation of (DAniF)(3)Mo-2(C6H5)NC(O)C6H4(O)CN(C6H5)}Mo-2-(DAniF)(3) (1) and (DAniF)(3)Mo-2[(m-CF3)C6H5]NC(O)C6H4(O)CN[(m-CF3)C6H5]}Mo-2(DAniF)(3) (2). The DeltaE(1/2) for the oxidation of each Mo-2 unit is greater for these terephthaloyldiamidate-bridged molecules (similar to100 mV) than for the analogous terephthalate-bridged compound (similar to60 mV). Variation in the nature of the substituents on the diamidate nitrogen atoms offers a means to fine-tune the oxidation potentials of the Mo-2 units.
TRICYCLIC AMINO CONTAINING COMPOUNDS FOR TREATMENT OR PREVENTION OF SYMPTOMS ASSOCIATED WITH ENDOCRINE DYSFUNCTION
申请人:EMORY UNIVERSITY
公开号:US20210401836A1
公开(公告)日:2021-12-30
The disclosure provides methods of use of certain compounds that are useful for treating certain symptoms of endocrine disturbances, and in particular those associated with hot flashes.