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Studies of lead(II) complexes of substituted calix[4]arenediquininones: The remarkable self assembly of a Novel Redox Active 3 D Channel Network.

Studies of lead(II) complexes of substituted calix[4]arenediquininones: The remarkable self assembly of a Novel Redox Active 3 D Channel Network.
Studies of lead(II) complexes of substituted calix[4]arenediquininones: The remarkable self assembly of a Novel Redox Active 3 D Channel Network.
Several calix[4]diquinone–lead(II) complexes have been prepared. Two momonomeric complexes have been prepared with p-tert-butyl-(26,28-crown-5)calix[4]diquinone L1 and p-tert-butylcalix[4]diquinone bis(ethyl ether)L2, namely [PbL1(ClO4)2] and [PbL2(ClO4)2(H2O] wherein the metal atoms are 10-coordinate being bonded to the four oxygen atoms at the lower rim of the calixdiquinone and three perchlorate oxygen atoms together with three crown oxygen atoms or two carbonyl oxygen atoms and a water molecule respectively.
By contrast the lead(II) complex with calix[4]diquinone bis(acid)L3 forms a unique trimeric [Pb9(L3– 2H)3(ClO4)6(OH)6] unit with crystallographic 3/m symmetry containing three unique Pb(II) atoms. One of these is to be found within the calix[4]diquinone bonded to the four oxygen atoms at the lower rim, two acid oxygen atoms, two perchlorate anions and a water molecule. The other two Pb(II) atoms are bonded to carbonylic oxygen atoms, water molecules and hydroxide ions. These trimeric units are interconnected via upper rim quinone oxygen–Pb(II) interactions to form a three-dimensional network containing channels of ca. 14 Å in diameter.
crystal engineering, porosity, calixarene
1466-8033
164-168
Beer, Paul D.
6af15407-244d-4e11-8147-a62a04672f4e
Drew, Michael G.B.
eea6c3a9-775f-48cd-910e-ea4f8e0ccde5
Gale, Philip A.
ce0aa62f-d081-408b-8b00-6d954058afab
Ogden, Mark I.
1461a54b-2593-4f78-98f3-69e77c316903
Powell, Harold R.
43678c0e-df19-459b-911f-3fb8b0ecfebf
Beer, Paul D.
6af15407-244d-4e11-8147-a62a04672f4e
Drew, Michael G.B.
eea6c3a9-775f-48cd-910e-ea4f8e0ccde5
Gale, Philip A.
ce0aa62f-d081-408b-8b00-6d954058afab
Ogden, Mark I.
1461a54b-2593-4f78-98f3-69e77c316903
Powell, Harold R.
43678c0e-df19-459b-911f-3fb8b0ecfebf

Beer, Paul D., Drew, Michael G.B., Gale, Philip A., Ogden, Mark I. and Powell, Harold R. (2000) Studies of lead(II) complexes of substituted calix[4]arenediquininones: The remarkable self assembly of a Novel Redox Active 3 D Channel Network. CrystEngComm, 30 (2), 164-168. (doi:10.1039/b007061k).

Record type: Article

Abstract

Several calix[4]diquinone–lead(II) complexes have been prepared. Two momonomeric complexes have been prepared with p-tert-butyl-(26,28-crown-5)calix[4]diquinone L1 and p-tert-butylcalix[4]diquinone bis(ethyl ether)L2, namely [PbL1(ClO4)2] and [PbL2(ClO4)2(H2O] wherein the metal atoms are 10-coordinate being bonded to the four oxygen atoms at the lower rim of the calixdiquinone and three perchlorate oxygen atoms together with three crown oxygen atoms or two carbonyl oxygen atoms and a water molecule respectively.
By contrast the lead(II) complex with calix[4]diquinone bis(acid)L3 forms a unique trimeric [Pb9(L3– 2H)3(ClO4)6(OH)6] unit with crystallographic 3/m symmetry containing three unique Pb(II) atoms. One of these is to be found within the calix[4]diquinone bonded to the four oxygen atoms at the lower rim, two acid oxygen atoms, two perchlorate anions and a water molecule. The other two Pb(II) atoms are bonded to carbonylic oxygen atoms, water molecules and hydroxide ions. These trimeric units are interconnected via upper rim quinone oxygen–Pb(II) interactions to form a three-dimensional network containing channels of ca. 14 Å in diameter.

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Published date: 2000
Keywords: crystal engineering, porosity, calixarene

Identifiers

Local EPrints ID: 15744
URI: https://eprints.soton.ac.uk/id/eprint/15744
ISSN: 1466-8033
PURE UUID: eb07c013-6aa5-4928-bf8f-d3c5c26f4ec2

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Date deposited: 25 May 2005
Last modified: 17 Jul 2017 16:47

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Contributors

Author: Paul D. Beer
Author: Michael G.B. Drew
Author: Philip A. Gale
Author: Mark I. Ogden
Author: Harold R. Powell

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