| 释义 |
cryptate, n. Chem.|ˈkrɪpteɪt|
[a. F. cryptate (coined by B. Dietrich et al. 1969, in Tetrahedron Lett. 2892), f. Gr. κρυπτός hidden or L. crypta cave, crypt: see -ate1.]
An organometallic complex in which a hydrogen or metal cation is trapped inside a cryptand.
1969Tetrahedron Lett.: Subject/Author Index Nos.1–60 p. ix/2 Cryptates, metal cation inclusion complexes, into molecular cavity of bicyclic ligands, 2889. 1970J. M. Lehn in Angewandte Chemie (Internat. ed.) IX. 175/2 Since the cation is ‘hidden’ in the center of the molecule, the name ‘cryptates’ is proposed for these compounds. 1975Y. M. Cahen et al. in Jrnl. Physical Chem. LXXIX. 1291/2 Following the suggestion of Lehn (personal communication) we designate the ligands as cryptands and the corresponding complexes as cryptates. 1978Accounts Chem. Res. XI. 54/1 Cryptate formation may become a powerful criterion of mechanism for ionic reactions involving complexable metal cations. 1984Greenwood & Earnshaw Chem. of Elements (1986) v. 137 Cryptates..are also known and usually follow the stability sequence Mg‹CaBa. 1988Nature 18 Feb. 564/3 Electron-pair trapping sites in the large cavities of the cryptate at the intersection of the various channels. |