[PDF] Top 20 Dibenzo 18 crown 6
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Dibenzo 18 crown 6
... of crown ethers and their coordinating abilities has been the subject of many crystallographic, spectroscopic, thermochemical and theoretical studies ...title crown ether have been determined, but the ... See full document
12
Synthesis and evaluation of dibenzo 18 crown 6 ether containing hydrazone derivative as antibacterial drug derivatives
... A mixture of dibenzo-18-crown-6(2.7 gm, 7.5 mmole), trifluoroacetic acid (5 mL) and hexamethylene tetramine (1.1 gm, 7.5mmole) was stirred at 90 0 C for 15 hr.The reaction mixture was added to ... See full document
5
A dimer of bis(N heterocyclic carbene)rhodium(I) centres spanned by a dibenzo 18 crown 6 bridge from synchrotron radiation
... The dibenzo-crown ether bridge of L spans the Rh centres and forms hydrogen bonds with water ...the crown ether O atoms and is, in turn, part hydrogen bonded by a lattice water with half ...PF ... See full document
20
SORPTION STUDY OF URANIUM (VI) IN ALANINE MEDIUM USING POLY [DIBENZO 18 CROWN 6] AND COLUMN CHROMATOGRAPHY
... An aliquot of solution containing 50μg of uranium (VI) was mixed with foreign ions and alanine was added so that its concentration was 1×10 -3 M in total volume of 10 mL. The tolerance limit was set as the amount of ... See full document
9
Dibenzo 18 crown 6–picric acid–water (1/2/3)
... containing dibenzo-18-crown-6, terbium nitrate and picric acid and instead the formation of DB18C6 with three water molecules in the presence of two picric acid have taken ... See full document
14
Theobrominium perchlorate dibenzo 18 crown 6 3 25 hydrate
... The pyrimidine ring of the theobromine molecule appears to be superimposed over one of the aromatic rings of dibenzo-18-crown-6. The angle enclosed by the planes of the purine and benzene ring ... See full document
10
(Dibenzo 18 crown 6)(2 phenylamidopyridine)potassium(I)
... With dibenzo-18- crown-6 instead of 18-crown-6, the title complex (with a 1:1:1 stoichiometry) is obtained, exactly analogous to the Rb ...The ... See full document
12
([1 5]Dibenzo 18 crown 6)potassium chlorochromate
... lone pairs of atom O1 is disrupted. Nevertheless, the C1—O1 and C20—O1 bond lengths are practically the same (Table 1). This could be caused by elongation of the C1—O1 bond due to the presence of a short C20 H2 ... See full document
13
(Dibenzo 18 crown 6)(2 phenylamidopyridine)rubidium(I)
... The crown ligand is hexadentate and occupies one coordina- tion hemisphere, with the bidentate amide ligand occupying the other, giving irregular eightfold coordination for the rubidium ...the crown-ligated ... See full document
12
Binding selectivity of dibenzo-18-crown-6 for alkali metal cations in aqueous solution: A density functional theory study using a continuum solvation model
... Despite those advantages and extensive uses of the continuum solvation model, only a few studies have been performed to understand the binding selectivity of crown ethers in solution phase using the continuum ... See full document
8
Cation–π interactions in [Na(dibenzo 18 crown 6)]2[Pd(SCN)4]
... Cation± interactions have attracted considerable attention as an important non-covalent binding force. Studies in the gas phase (Sunner et al., 1981), aqueous media (Petti et al., 1988; Forman et al., 1995), solid state ... See full document
11
(4 Bromobenzo 18 crown 6)potassium chlorochromate
... = crown ether) are easily crystallized from acid aqueous solu- tions and we have determined several crystal structures of these compounds (Kotlyar et ...and dibenzo-CE with halogenochro- mates were obtained ... See full document
13
Investigations on the influence of the coordination formation between dibenzo and benzo derivatives of 18-crown-6 and 15-crown-5 crown ethers with Pr (III) and Nd (III) ions in solution
... namely, 18- Crown-6(6CE 1 ), Benzo-18 crown -6(6CE 2 ), Dibenzo 18- crown -6(6CE 3 ), 15-Crown -5(5CE 1 ), Benzo 15- crown-5(5CE 2 ), ... See full document
10
Bis[(18 crown 6)isothiocyanatolead(II)] tetrathiocyanatopalladate(II)
... 1 mmol) in 1,2-dichloroethane (10 ml). The reaction mixture was stirred for 3 h at room temperature. The organic phase was then separated from the reaction solution. Single crystals of (I) were obtained from a solution ... See full document
8
Use of gadolinium in 13C NMR studies
... ABSTRACT , The addition of the reagents paramagnetic gadolinium18- crown-6 nitrate, gadoliniumdicyclohexano-18-crown-6 nitrate, and gadolinium ethylbenzene, nitrate and thymidine has bee[r] ... See full document
63
Diaquachlorozinc(II)–18 crown 6–water (1/1/1)
... in crown B merely have interactions with adjacent coordinated water O1W, with average O O distances of ...the crown ethers and Zn complex into a one-dimensional chain extending along the [011] direction ... See full document
8
(18 Crown 6) bis(tetrahydrofuran)potassium iodide
... an 18-crown-6 complex of potassium with an amide ligand (see Experimental), when the lithium complex could not be obtained by direct reaction with the ligands (Liddle et ...of ... See full document
11
Bis(aquamethyldiphenyltrifluoroacetatotin)–18 crown 6 (1/1)
... Triorganotin(IV) carboxylates commonly exist as either four- coordinate tetrahedral molecules or ®ve-coordinate carboxylate-bridge polymers (Ng et al., 1988; Tiekink, 1991, 1994). Within the triphenyltin carboxylate ... See full document
10
(18 Crown 6)potassium(I) diphenylstibate(−1)
... Sb1 0.02653 (12) 0.01591 (12) 0.02407 (12) 0.000 0.01153 (9) 0.000 K1 0.0173 (3) 0.0167 (3) 0.0253 (3) −0.0019 (3) 0.0011 (3) 0.0031 (3) O2 0.0198 (8) 0.0233 (9) 0.0239 (8) 0.0032 (7) 0.0040 (6) 0.0018 (7) O3 ... See full document
9
Acetylene–ammonia–18 crown 6 (1/2/1)
... 0.039 g(1.0 mmol) potassium and 0.264 g(1.00 mmol)18-crown-6 were placed under argon atmosphere in a baked-out reaction vessel and 30 ml of dry liquid ammonia were condensed. The mixture was stored ... See full document
8
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