Sentence examples for crown ring from inspiring English sources

It is found that different nitrogen position in crown ring will result in different relative energy.

Diaza 18-crown-6 was designed as the parent crown ring.

Upon the Pb2+ ion coordination to two amide oxygen atoms with aid of crown ring, a reverse-photo-induced electron transfer (PET) occurs in such a way that electrons transfer from the pyrene groups to the electron deficient amide oxygen atoms to give a quenched fluorescence.

Yesterday he carefully chose a sparkly princess crown ring at the mall, and this morning before preschool he very earnestly offered it to her.

Potassium, the common utility heavier alkali metal, has received only a modicum of attention, which is surprising given both its prominence in Lochmann Schlosser mixed-metal superbase chemistry, 10 and especially since in 2000 it produced one of the most spectacular outcomes of AMMMg in the 24-atom inverse crown ring complexes [ tmp 12K6Mg6(C6H4R 6] (R=H or CH3).

Make the rest part of the crown ring.

Theoretical calculations suggest that among other possible effects characteristic vibrations of crown rings could be identified as background of this unexpected complexation phenomena.

Judging from the fluorescence changes upon the addition of cations, 3 having crown-6 ring showed the Pb2+ ion selectivity over other cations tested regarding fluorescence quenching.

Roger Cohen (NYT) BULGARIA: THROWING CROWN INTO RING Bulgaria's former king, Simeon II, said he would lead a new political party -- the National Movement for King Simeon II -- in the June 17 general election.

The show includes silver necklaces based on hip-hop bling by Kiki Smith (one with a tarantula pendant and a star costs $5,000); a ceremonial crown and ring set made from reclaimed gold jewelry by Kara Hamilton ($45,000 for the set); and older pieces by Alexander Calder and Louise Nevelson.

Thus, allosteric binding between metal ions 'switch off' the recognition ability of crown ether ring.