A new structural motif for cadmium dithiocarbamates: Crystal structures and Hirshfeld surface analyses of homoleptic zinc and cadmium morpholine dithiocarbamates
The crystal and molecular structures of two homoleptic morpholine-derived dithiocarbamates of zinc, binuclear {Zn[S2CN(CH2CH2)2O)2]2}2 (1), and cadmium, one-dimensional coordination polymer {Cd[S2CN(CH2CH2)2O)2]2}2 (2), are described. In 1, a centrosymmetric binuclear molecule is found as there are...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter for Oldenbourgh Verlag
2019
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| Subjects: | |
| Online Access: | http://eprints.sunway.edu.my/1041/1/Tiekink%20New%20Structural%20motif%20for%20cadmium%20Z.%20Kristallogr.%20243%202019%20341%20accepted.pdf http://eprints.sunway.edu.my/1041/ |
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| Summary: | The crystal and molecular structures of two homoleptic morpholine-derived dithiocarbamates of zinc, binuclear
{Zn[S2CN(CH2CH2)2O)2]2}2 (1), and cadmium, one-dimensional coordination polymer {Cd[S2CN(CH2CH2)2O)2]2}2 (2), are described. In 1, a centrosymmetric binuclear molecule is found as there are equal numbers of chelating and bidentate bridging dithiocarbamate ligands; weak transannular Zn...S interactions are found within the resultant eight-membered {...SCSZn}2 ring which has the form of a chair. The resultant 4+1 S5 donor set is highly distorted with the geometry tending towards a square-pyramid. By contrast, a square-planar geometry is found in centrosymmetric 2 defined by symmetrically chelating dithiocarbamate ligands. The presence of
Cd...S secondary bonding in the crystal of 2 leads to a distorted 4+2 S6 octahedron and a linear coordination polymer, which is unprecedented in the structural chemistry of cadmium dithiocarbamates. The analyses of the
Hirshfeld surfaces for 1 and 2 show the dominance of H…H, S…H/H…S and O…H/H…O contacts to the surface, i.e. contributing around 90 and 80%, respectively. |
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