scholarly journals The Stability of Fused Rings in Metal Chelates. VIII. Solution Equilibria of the Copper(II) Complexes of Glycinamide and Related Compounds

1971 ◽  
Vol 44 (10) ◽  
pp. 2716-2721 ◽  
Author(s):  
Osamu Yamaughi ◽  
Hiroko Miyata ◽  
Akitsugu Nakahara
Keyword(s):  
Metal Chelates ◽  
Solution Equilibria ◽  
The Stability ◽  
Related Compounds

scholarly journals Stability Studies of Transition Metal Chelates of 5-Bromosalicylidene-4-methoxyaniline andSalicylidene-2,3-dimethylaniline as Ligands

2011 ◽  
Vol 8 (4) ◽  
pp. 1911-1915
Author(s):  
N. G. Nadkarni ◽  
K. V. Mangaonkar
Keyword(s):  
Ionic Strength ◽  
Transition Metal ◽  
Stability Constants ◽  
Metal Chelates ◽  
Ternary Complexes ◽  
Water Medium ◽  
Stability Studies ◽  
Binary And Ternary Complexes ◽  
Transition Metal Chelates ◽  
The Stability

Binary and ternary complexes of the type M-Y and M-X-Y [M = Mn(II), Ni(II), Cu(II) and Zn(II); X = 5-bromosalicylidene-4-methoxyaniline and Y = salicylidene-2,3-dimethylaniline] have been examined pH-metrically at 27±0.5°C and at constant ionic strength, μ = 0.1 M (KCl) in 75 : 25(v/v) 1,4-dioxne-water medium. The stability constants for binary (M-Y) and ternary (M-X-Y) systems were calculated.

Solution Structures of Pyrophthalones, I Structure and Conformation of 1,3-Indandionato-2(2-pyridinium)-betaïn — a 1H/13C NMR Approach

1987 ◽  
Vol 42 (1) ◽  
pp. 31-36 ◽  
Author(s):  
Erhard T. K. Haupt ◽  
Heindirk tom Dieck ◽  
Panayot R. Bontchev
Keyword(s):  
Hydrogen Bond ◽  
Intramolecular Hydrogen Bond ◽  
13C Nmr ◽  
Nmr Spectra ◽  
Complete Analysis ◽  
Solution Structures ◽  
The Stability ◽  
Intramolecular Hydrogen ◽  
Related Compounds ◽  
C Nmr

AbstractThe complete analysis of the 1H/13 C NMR spectra of α-Pyrophthalone and related compounds demonstrates that the earlier static planar description of the molecules is invalid for polar sol-vents, and here the stability of any intramolecular hydrogen bond is small.

Substituierte 2-Chloracetessigsäureanilide und ihre Metallchelate / Substituted 2-chloroacetoacetanilides and their metal chelates

1970 ◽  
Vol 25 (12) ◽  
pp. 1386-1388 ◽  
Author(s):  
A. Kettrup ◽  
J. Abshagen
Keyword(s):  
Stability Constants ◽  
Chelating Agents ◽  
Dissociation Constants ◽  
Metal Chelates ◽  
Ph Measurements ◽  
The Stability ◽  
Copper Chelates

The preparation of 2-chloroacetoacetanilides and the preparation of their metal chelates is described.The dissociation constants of the chelating agents and the stability constants of the copper chelates were determined by potentiometric pH-measurements

The Stability of Metal Chelates of 5-Sulfo-anthranilic Acid

1955 ◽  
Vol 77 (10) ◽  
pp. 2893-2893 ◽  
Author(s):  
William F. Harris ◽  
Thomas R. Sweet
Keyword(s):  
Anthranilic Acid ◽  
Metal Chelates ◽  
The Stability

Complexation of carbon nanorings with fullerenes

2006 ◽  
Vol 78 (4) ◽  
pp. 831-839 ◽  
Author(s):  
Takeshi Kawase ◽  
Masaji Oda
Keyword(s):  
Inclusion Complexes ◽  
Dipolar Interaction ◽  
The Novel ◽  
Conjugated Systems ◽  
Hollow Space ◽  
Wide Contact ◽  
The Stability ◽  
Deep Cavities ◽  
Related Compounds ◽  
Carbon Nanorings

To explore the supramolecular properties of the hollow space of carbon nanotubes, the belt-shaped conjugated systems with sizable and deep cavities are intriguing molecules. Recently, we found that the "carbon nanorings", cyclic [6]paraphenyleneacetylene ([6]CPPA), and the related compounds involving two naphthylene rings, form stable inclusion complexes with fullerenes in solution as well as in the solid state. The stability of these complexes correlates well with the van der Waals (VDW) contact between the host and guest. Thus, carbon nanorings having a deep cavity should form considerably stable complexes with fullerenes. In this context, we have designed a new carbon nanoring, cyclic [6](1,4)naphthyleneacetylene. The host forms considerably stable inclusion complexes with fullerenes and can act as the best fluorescence sensor for fullerenes among all the known hosts. The NMR spectra reveal the formation of two major conformational isomers, in which five or six naphthylene rings surround a guest molecule to gain wide contact area. The high affinity between C60 and naphthylene rings similar to an ion-dipolar interaction plays an important role in the novel guest-induced conformation fixation.

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