Membrane processes.  II.  Participation of the dimethyltin ion in an electrical doudle layer

Reeves, L. W.; Suzuki, Makoto; Tracey, Alan S.; Vanin, J. A.

doi:10.1021/ic50134a048

Cited by 16 publications

(8 citation statements)

References 17 publications

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“…Equation 4, however, is required to obtain the degree of order of this segment axis from the methyl splitting since the methyl group sits in a different orientation with respect to the chain Journal of the American Chemical Society / 97:20 / October a Splittings reported are for the deuterated decylsulfate. 6 Ratios have a larger error than normal. c This phase contains 1.4 wt % methanol and this could adequately account for some rather large changes in ratio as compared to phase 10 which is similar but contains no methanol.…”

Section: Resultsmentioning

confidence: 95%

Membrane processes. VII. Hydrocarbon chain motions and the effect of changing counterions

Reeves¹,

Tracey²

1975

J. Am. Chem. Soc.

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Section: Resultsmentioning

confidence: 95%

Membrane processes. VII. Hydrocarbon chain motions and the effect of changing counterions

Reeves¹,

Tracey²

1975

J. Am. Chem. Soc.

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“…During the crystal's growth, this adsorption leads to retardation of growth of the adsorbing faces by disruption of the regular deposition of the oncoming layers, generally leading to a change in crystal morphology. 5 During partial dissolution, the strong stereoselective adsorption of the additive on such faces causes a disturbance of the normal dissolution in different directions and leads to the formation of etch pits.6 This experimental work was complemented by atom-atom potential energy calculations from which it became possible to establish quantitatively at which crystal surfaces the additive may be adsorbed and to elucidate the substrate-additive interactions which cause the inhibition of growth.5*1…”

Section: Discussionmentioning

confidence: 99%

Effect of solvent on the growth of organic crystals. 1. The riddle of .alpha.-resorcinol

Wireko¹,

Shimon²,

Frolow³

et al. 1987

J. Phys. Chem.

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19.5 kJ mol'1 if f?het = 2(2rDMF + r\). From the above considerations, also the smaller value for the intermolecular distance, Rh0m, does not appear ill-grounded. a fellowship. We thank N. Formenton for valuable help in the HPLC analysis and B. Bozzato for her assistance in the preparation of the manuscript.Registry No. Benzyl phenyl sulfide, 831-91-4; toluene, 108-88-3; benzenethiol, 108-98-5; pyrene radical ion (1-), 34512-41-9; mercury, 7439-97-6; platinum, 7440-06-4; carbon, 7440-44-0; p-terphenyl radical ion (1-), 34484-04-3; benzonitrile radical ion (1-), 34478-18-7; chrysene radical ion (1-), 34488-57-8; benzo[A]quinoline radical ion (1-), 72490-91-6; benzo[/]quinoline radical ion (1-), 72490-90-5; phenanthridine radical ion (1-), 34518-98-4; naphtho-1',2',6,5-quinoline radical ion (1-), 104716-63-4; sulfur, 7704-34-9; pyrene, 129-00-0; chysene, 218-01-9.

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“…teaching instrument. The flexibility of these nematic phases with respect to counter ion exchange, variation of temperature, variation of detergent used, the use of mixed detergents, variation of p H in the water component etc., has prompted a series of studies from this and the SBo Paulo laboratory (21)(22)(23)(24)(25)(26)(27)(28)(29)(30). The present study is a systematic investigation of the alkali metal decyl sulfates as components of ternary phases with decyl alcohol and water to probe the extent of nematic phase formation and type of nematic phase formed.…”

Section: Introductionmentioning

confidence: 96%

Studies of Ternary Nematic Phases by Nuclear Magnetic Resonance. Alkali Metal Decyl Sulfates/Decanol/D₂O

Radley¹,

Reeves²

1975

Can. J. Chem.

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KEITH RADLEY and LEONARD WALLACE REEVES. Can. J. Chem. 53,2998Chem. 53, (1975. The nematic regions of the ternary phase diagram for alkali metal decyl sulfates/decanol/D20 have been investigated. The lithium detergent system has a very restricted region of type I nematic phase which orients parallel to the magnetic field with a long time constant. The sodium detergent also forms a rather restricted nematic region which may be type 11, oriented perpendicular to the magnetic field or type I oriented parallel to the magnetic field, depending on the decanol content. The rubidium and potassium detergents were insufficiently soluble to form phases while the cesium detergent forms a very extensive type I1 nematic phase region with wide variations in water contents and with decanol between 2 and 7 wt.%. It is clear that the cesium decyl sulfate system has considerable advantage over the sodium detergent in forming nematic phases for use as orienting media for small molecules and ions in n.m.r. studies.The partially averaged nuclear quadrupole coupling constants of Li-7, Na-23, and Cs-133 in ions and D-2 in the D 2 0 have been used as the primary tool in investigating the phase behavior. Quadrupole couplings have been reduced to unit quadrupole moment for the nucleus. The resultant quantity "E," in Hz b-' reflects the strongly increasing electric field gradient induced in the monatomic ions by the nematic medium in going from Li+ to Cs+. The partially averaged quadrupole splittings which appear for the alkali metal ions in these uniaxial media are the result of distortion of the spherical symmetry of the ion and should not be interpreted in terms of degrees of orientation of the ion.KEITH RADLEY et LEONARD WALLACE REEVES. Can. J. Chem. 53,2998Chem. 53, (1975. On a etudiC les rQions ntmatiques du diagramme de phase ternaire: sulfates de dkyle de metaux alcalins/dCcanol/DZO. Le systtme comprenant un sel de lithium du dktergent posstde pour une region trts restreinte, une phase nkmatique de type I qui s'oriente paralklement au champ magnetique et qui posstde une longue constante de temps. Le detergent sous forme de sel de sodium possede aussi, sur une region relativement restreinte, une phase nkmatique de type I1 orient& perpendiculairement au champ magnttique ou de type I orient& paralltlement au champ magnetique; les variations dkpendent du contenu en dkanol. Les sels de rubidium et de potassium du detergent ne sont pas suffisamment solubles pour former des phases; les sels de cesium du detergent posstdent une phase nematique de type I1 sur une rkgion tres large impliquant de grandes variations dans le contenu en eau et a des concentrations de decanol allant de 2 a 7% en poids. I1 est donc evident que le systeme contenant des sels de cesium du sulfate de dkyle posstde des avantages marques sur les sels de sodium lorsqu'il s'agit de former des phases nkmatiques destinks a orienter des petites molkules et des ions pour Ctude r.m.n.Le principal outil utilisC pour Ctudier le comportement des phases a Ct C les constantes de c...

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Membrane processes. II. Participation of the dimethyltin ion in an electrical doudle layer

Cited by 16 publications

References 17 publications

Membrane processes. VII. Hydrocarbon chain motions and the effect of changing counterions

Membrane processes. VII. Hydrocarbon chain motions and the effect of changing counterions

Effect of solvent on the growth of organic crystals. 1. The riddle of .alpha.-resorcinol

Studies of Ternary Nematic Phases by Nuclear Magnetic Resonance. Alkali Metal Decyl Sulfates/Decanol/D₂O

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Membrane processes. II. Participation of the dimethyltin ion in an electrical doudle layer

Cited by 16 publications

References 17 publications

Membrane processes. VII. Hydrocarbon chain motions and the effect of changing counterions

Membrane processes. VII. Hydrocarbon chain motions and the effect of changing counterions

Effect of solvent on the growth of organic crystals. 1. The riddle of .alpha.-resorcinol

Studies of Ternary Nematic Phases by Nuclear Magnetic Resonance. Alkali Metal Decyl Sulfates/Decanol/D2O

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Product

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Studies of Ternary Nematic Phases by Nuclear Magnetic Resonance. Alkali Metal Decyl Sulfates/Decanol/D₂O