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Self-assembled Transition Metal Coordination Frameworks of ...

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Chapter 6<br />

Zn(4)=9O.78(l)°}. The Zn(H)---Zn(II) distances along the corners <strong>of</strong> the square are<br />

5.5158(7) A for Zn(l)---Zn(3) and 5.6664(7) A for Zn(2)---Zn(4). But no water or<br />

solvent molecules are present in the cavity space <strong>of</strong> square grid.<br />

‘*­<br />

N7 ' ,<br />

\l24 N23 \-. \<br />

\ N8<br />

‘K ‘K<br />

\~. N2 mo .\~.\<br />

- M‘ N12 ‘<br />

N17 '. N19<br />

Fig. 6.26. A side view <strong>of</strong> 29 with coordination octahedral polyhedra (top) and top<br />

view <strong>of</strong> cationic part showing the symmetry (bottom left, carbon bound hydrogen<br />

atoms are removed for clarity) and the coordination core about the Zn(II) centers<br />

(bottom right).<br />

262<br />

r~ 1 1

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