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Int. J. Mol. Sci., Volume 2, Issue 3 (September 2001), Pages 133-155

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Editorial

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Open AccessEditorial Is Electronic Publishing Being Used in the Best Interests of Science? The Scientist’s View
Int. J. Mol. Sci. 2001, 2(3), 133-139; doi:10.3390/i2030133
Received: 2 May 2001 / Published: 28 June 2001
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Abstract
The term "the best interests of science" must be interpreted from the viewpoints both of the scientists inside the enterprise and of the supporters and "users" affected by society's using the results of scientific research. This presentation will try to interpret the [...] Read more.
The term "the best interests of science" must be interpreted from the viewpoints both of the scientists inside the enterprise and of the supporters and "users" affected by society's using the results of scientific research. This presentation will try to interpret the material presented throughout the Conference [1] in terms of both these viewpoints, but all within the context of this presenter's perspective, as a scientist, regarding "Why should we have science?" This presentation will be an overview and summary of many ideas that emerged in discussions in the Conference, with no attempt to attribute those ideas to individuals because so many of them were said by several participants, here and elsewhere. Furthermore, the perspective here is certainly that of the scientist, not of the publisher. Full article

Research

Jump to: Editorial

Open AccessArticle Relaxometric Investigation of Functional Group Placement on MnTPP Derivatives Supports the Role of the Molecular Electrostatic Potential Maps as a Tool to Design New Metalloporphyrins with Larger Relaxivities
Int. J. Mol. Sci. 2001, 2(3), 140-147; doi:10.3390/i2030140
Received: 11 July 2001 / Accepted: 21 August 2001 / Published: 25 August 2001
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Abstract
We report the T1 and T2 NMR (nuclear magnetic resonance) dispersion profiles for a new manganese porphyrin [MnT(2-C)PP] which has an anionic carboxylate group in the ortho position of the phenyl rings on the metalloporphyrin. Previous MEP (molecular electrostatic potential) maps indicated [...] Read more.
We report the T1 and T2 NMR (nuclear magnetic resonance) dispersion profiles for a new manganese porphyrin [MnT(2-C)PP] which has an anionic carboxylate group in the ortho position of the phenyl rings on the metalloporphyrin. Previous MEP (molecular electrostatic potential) maps indicated that this judicious derivatization could result in increases in the observed relaxation efficiency. Relaxometric investigations experimentally confirm about a 20 % increase in the relaxation efficiency at clinically relevant field strengths for MnT(2-C)PP compared to the most efficient metalloporphyrin previously reported MnT(4-S)PP. This result supports the hypothesis that electrostatic forces are relevant to the relaxivity of this family of compounds and that the MEP may be used as a tool to design new agents with even larger relaxivities. Full article
Open AccessArticle Quantum Chemical Studies on Molecular and Electronic Structure of Platinum and Tin Adducts with Guanine
Int. J. Mol. Sci. 2001, 2(3), 148-155; doi:10.3390/i2040148
Received: 3 August 2001 / Accepted: 18 October 2001 / Published: 25 October 2001
Cited by 2 | PDF Full-text (208 KB) | HTML Full-text | XML Full-text
Abstract
The electronic structure of model platinum-guanine and tin-guanine adducts has been studied both at semiempirical level and by using ab initio methods at the correlation level. The possible binding energies have been evaluated and most probable strustures were determined. In all cases [...] Read more.
The electronic structure of model platinum-guanine and tin-guanine adducts has been studied both at semiempirical level and by using ab initio methods at the correlation level. The possible binding energies have been evaluated and most probable strustures were determined. In all cases the binding enegies of the gaseous tin chelates are rather large. The stabilizing role of the hydrogen bonds has been pointed out in tinguanine chelates as well as comparison with the relevant platinum complexes is discussed. Full article

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