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Investigating the Impact of Supramolecular Connectivity on Mechanical Properties of Crystals (CROSBI ID 713482)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | domaća recenzija

Borovina, Mladen ; Pisačić, Mateja ; Husinec, Ana ; Badurina, Valentina ; Đaković, Marijana Investigating the Impact of Supramolecular Connectivity on Mechanical Properties of Crystals // IV. Simpozij supramolekulske kemije - knjiga sažetaka. 2021. str. tba-tba

Podaci o odgovornosti

Borovina, Mladen ; Pisačić, Mateja ; Husinec, Ana ; Badurina, Valentina ; Đaković, Marijana

engleski

Investigating the Impact of Supramolecular Connectivity on Mechanical Properties of Crystals

Recent findings in the field of crystal engineering of molecular crystals have shifted the paradigm that crystals are brittle, rigid, and easily break when mechanical force is applied to them. There is a growing number of scientific papers which show that molecular crystals can also exhibit plastic and/or elastic deformation as a response to applied mechanical force. While these new phenomena are certainly interesting the mechanisms that lead to these extraordinary behaviors are not completely understood and require additional research. Our previous research has found that cadmium(II) halide coordination polymers with halogen substituted pyrazine ligands can exhibit bending deformation and revert to their original state as long they are not bent beyond a certain threshold (i.e. the critical radius).1 It was also shown that halogen bons formed between halide and halogen atoms could indeed play a crucial role in defining the mechanical properties of these crystals. Halogen substituted pyrazines are considered relatively weak halogen bond donors and the interactions that they form are comparable to weak hydrogen bonds.2 Therefore replacing weak halogen bond donors with weak hydrogen bond donors could in theory produce similar mechanical responses in crystals. To investigate this venue, we opted to use nitropyridine ligands since they also have a conformationally rigid structure as well as nitro groups which can serve both as a potential hydrogen bond acceptor and due to their electron withdrawing nature have an activating effect on present C–H hydrogen bond donors. We also expanded our research to copper(II) halides (chloride and bromide) to investigate if findings for cadmium(II) halide compounds could be applied to different metal halides which possess similar structural features (i.e. form 1D coordination polymers). All four possible coordination polymers were successfully crystalized and gave needle like crystals which were of adequate quality for mechanical property measurements. Their crystal structures were also successfully determined and correlated with observed mechanical responses.

crystals ; cadmium ; copper ; coordination polymers ; mechanical bendability

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Podaci o prilogu

tba-tba.

2021.

objavljeno

Podaci o matičnoj publikaciji

IV. Simpozij supramolekulske kemije - knjiga sažetaka

Podaci o skupu

IV. simpozij supramolekulske kemije = Supramolecular Chemistry 2021

pozvano predavanje

10.12.2021-10.12.2021

Zagreb, Hrvatska

Povezanost rada

Kemija