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Self-assembled Transition Metal Coordination Frameworks of ...

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Chapter I__ _ _<br />

irreducible, is a new development but nevertheless one that ensures that the subject<br />

will remain robust in the foreseeable future [1].<br />

Chemistry is oceanic with respect to factual information. In a broad context,<br />

the science <strong>of</strong> chemistry may be viewed as comprised <strong>of</strong> (i) a conceptual foundation<br />

<strong>of</strong> principles and theoretical, <strong>of</strong>ten hypothetical, relationships, (ii) an experimental<br />

base <strong>of</strong> currently available methods and techniques for manipulating and evaluating<br />

matter, and (iii) the chemical content, an enormous data base <strong>of</strong> specific information<br />

about individual chemicals, chemical systems, and chemical reactions [5]. Molecular<br />

chemistry, the chemistry <strong>of</strong> the covalent bond, is concemed with uncovering and<br />

mastering the rules that govern the structures, properties, and transformations <strong>of</strong><br />

molecular species [6]. The appearance <strong>of</strong> supramolecular chemistry stimulated new<br />

thinking about the relationship <strong>of</strong> chemistry with biology and it opens up a huge<br />

discontinuity from physics [1]. Supramolecular chemistry, literally means chemistry<br />

beyond the molecules, provides a convenient introduction to chemists about the notion<br />

<strong>of</strong> complexity. Since complexity is a temporal attribute what is complex today might<br />

become merely complicated tomorrow, or even trivial [l]. Supramolecular chemistry<br />

is full <strong>of</strong> emergent phenomena, as the whole is difficult to predict from the properties<br />

<strong>of</strong> individual parts. The scope and possibilities <strong>of</strong> this new subject were clearly<br />

enunciated by Jean-Marie Lehn [2,6]. The developments in molecular and<br />

supramolecular science and engineering <strong>of</strong>fer exciting perspectives at the frontiers <strong>of</strong><br />

chemistry with physics and biology. Emergence and reductionism are nearly<br />

antithetical. Emergent properties are more easily understood in their own right than in<br />

terms <strong>of</strong> lower level properties. So in terms <strong>of</strong> emergence, a useful way <strong>of</strong> looking at<br />

chemistry and its relationship to mathematics and natural sciences, biology emerges<br />

out <strong>of</strong> chemistry, which emerges out <strong>of</strong> physics, which emerges out <strong>of</strong> mathematics,<br />

which emerges out <strong>of</strong> the mind contemplating the Absolute, like Sankara’s doctrines<br />

<strong>of</strong>advaita [l].<br />

2

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