Siloxane-based linkers in the construction of hydrogen bonded assemblies and porous 3D MOFs†
Luke C.
Delmas, 
a
Andrew J. P.
White,
a
Simon J.
Coles,
b
Paul D.
Lickiss
*a
and
Robert P.
Davies
*a
a
Andrew J. P.
White,
a
Simon J.
Coles,
b
Paul D.
Lickiss
*a
and
Robert P.
Davies
*a
Abstract
A siloxane-based hexacarboxylic acid (L1-H6) has been prepared and applied in MOF construction. L1-H6 itself crystallizes as an unusual interpenetrated 3D hydrogen-bonded framework. Reaction of L1-H6 with Zn(II) gave IMP-18 – a 3D MOF incorporating Si–O–Si functionality. Cleavage of L1-H6 gives a silanol-based triacid which is shown to give a coordination polymer (IMP-19) with Zn(II).
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