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Tetrakis(μ2-4-aminobenzoato)di-μ3-oxido-tetrakis[dibutyltin(IV)]


Linden, A; Basu Baul, T S; Das, P (2010). Tetrakis(μ2-4-aminobenzoato)di-μ3-oxido-tetrakis[dibutyltin(IV)]. Acta Crystallographica. Section C, Crystal Structure Communications, 66(3):m58-m61.

Abstract

The molecule of the title compound, [Sn4(C4H9)8(C7H6-
NO2)4O2], lies about an inversion centre and is a tetranuclear
bis(tetrabutyldicarboxylatodistannoxane) complex containing
a planar Sn4O2 core in which two 3-oxide O atoms connect an
Sn2O2 ring to two exocyclic Sn atoms. Each Sn atom has a
highly distorted octahedral coordination. In the molecule, the
carboxylate groups of two aminobenzoate ligands bridge the
central and exocyclic Sn atoms, while two further aminobenzoate
ligands have highly asymmetric bidentate chelation
to the exocyclic Sn atoms plus long O Sn interactions with
the central Sn atoms. Each Sn atom is also coordinated by two
pendant n-butyl ligands, which extend roughly perpendicular
to the plane of the Sn4O10 core. Only one of the four unique
hydrogen-bond donor sites is involved in a classic N—H O
hydrogen bond, and the resulting supramolecular hydrogenbonded
structure is an extended two-dimensional network
which lies parallel to the (100) plane and consists of a
checkerboard pattern of four-connected molecular cores
acting as nodes. The amine groups not involved in the
hydrogen-bonding interactions have significant N—H
interactions with neighbouring aminobenzene rings.

Abstract

The molecule of the title compound, [Sn4(C4H9)8(C7H6-
NO2)4O2], lies about an inversion centre and is a tetranuclear
bis(tetrabutyldicarboxylatodistannoxane) complex containing
a planar Sn4O2 core in which two 3-oxide O atoms connect an
Sn2O2 ring to two exocyclic Sn atoms. Each Sn atom has a
highly distorted octahedral coordination. In the molecule, the
carboxylate groups of two aminobenzoate ligands bridge the
central and exocyclic Sn atoms, while two further aminobenzoate
ligands have highly asymmetric bidentate chelation
to the exocyclic Sn atoms plus long O Sn interactions with
the central Sn atoms. Each Sn atom is also coordinated by two
pendant n-butyl ligands, which extend roughly perpendicular
to the plane of the Sn4O10 core. Only one of the four unique
hydrogen-bond donor sites is involved in a classic N—H O
hydrogen bond, and the resulting supramolecular hydrogenbonded
structure is an extended two-dimensional network
which lies parallel to the (100) plane and consists of a
checkerboard pattern of four-connected molecular cores
acting as nodes. The amine groups not involved in the
hydrogen-bonding interactions have significant N—H
interactions with neighbouring aminobenzene rings.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Chemistry
Dewey Decimal Classification:540 Chemistry
Language:English
Date:2010
Deposited On:06 Jul 2010 21:39
Last Modified:05 Apr 2016 14:10
Publisher:Wiley-Blackwell
ISSN:0108-2701
Funders:Department of Science and Technology, New Delhi, India (grant No. SR/S1/IC-03/2005
Publisher DOI:https://doi.org/10.1107/S0108270110003033
Official URL:http://journals.iucr.org/c/issues/2010/03/00/fg3152/index.html

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