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Issue 36, 2014
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Temperature-dependent halogen⋯halogen synthon crossover in coordination compounds

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Abstract

The temperature-dependent Br⋯Br halogen⋯halogen synthon crossover in two coordination compounds of HgI2 and N-(3-bromophenyl)pyridine-3-carboxamide flexible ligand, L3Br-nic, have been investigated. The results show that when starting with equivalent amounts of the reagents and when the reaction was carried out at room temperature, a 1 : 2 adduct of HgI2 : 2L3Br-nic, complex 1, was generated, whereas when the reaction temperature was fixed at −4 °C, a 1 : 1 adduct, complex 2, was obtained. In 1, individual molecules form a wave-like chain through type II Br⋯Br halogen bonding interactions, while the Br⋯Br interactions generate dimeric units in 2.

Graphical abstract: Temperature-dependent halogen⋯halogen synthon crossover in coordination compounds

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Publication details

The article was received on 02 Apr 2014, accepted on 10 Jul 2014 and first published on 10 Jul 2014


Article type: Paper
DOI: 10.1039/C4CE00692E
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CrystEngComm, 2014,16, 8479-8485

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    Temperature-dependent halogen⋯halogen synthon crossover in coordination compounds

    H. R. Khavasi and M. Esmaeili, CrystEngComm, 2014, 16, 8479
    DOI: 10.1039/C4CE00692E

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