TY  - JOUR
AU  - Petković-Benazzouz, Marija M.
AU  - Rakić, Aleksandra
AU  - Trišović, Nemanja
AU  - Zarić, Božidarka
AU  - Janjić, Goran
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7120
AB  - Coordination effects have been considered through the most common interactions in the crystal structures of fluoro compounds (C–H/F and F/F interactions). The supramolecular profile of these effects is based on quantum-chemical calculations for the assessment of the interaction strength and electrostatic potential maps, which provide a qualitative insight into the examined effect. Coordination of aliphatic fluorides leads to an increase of the negative potential of the F atoms, and, hence, an increase in the hydrogen-bonding acceptor ability (strengthening of C–H/F interactions) and a weakening of the F/F interactions, due to an increase in repulsive interactions between the F atoms. There is no significant change in the potential of the F atoms due to coordination of C6-aromatic fluorides, as in the case of aliphatic ones. This results in slight changes in the strengths of the C–H/F and F/F interactions (coupled with parallel interaction at large offsets, PILO), in a noticeable enhancement of stacking interactions, as well as in a significant enhancement of interactions involving the π-system (F/π and C–H/π interactions). It has also been shown that a decrease in the charge of the metal ions leads to a decrease in the negative potential of the F atom and also that the nature of the metal ion has a significant influence on the value of the potential of the F atoms.
PB  - American Chemical Society (ACS)
T2  - Crystal Growth and Design
T1  - Supramolecular Perspective of Coordination Effects on Fluorine Interactions
VL  - 21
VL  - 6142
IS  - 11
SP  - 6129
DO  - 10.1021/acs.cgd.1c00584
ER  - 

@article{
author = "Petković-Benazzouz, Marija M. and Rakić, Aleksandra and Trišović, Nemanja and Zarić, Božidarka and Janjić, Goran",
year = "2021",
abstract = "Coordination effects have been considered through the most common interactions in the crystal structures of fluoro compounds (C–H/F and F/F interactions). The supramolecular profile of these effects is based on quantum-chemical calculations for the assessment of the interaction strength and electrostatic potential maps, which provide a qualitative insight into the examined effect. Coordination of aliphatic fluorides leads to an increase of the negative potential of the F atoms, and, hence, an increase in the hydrogen-bonding acceptor ability (strengthening of C–H/F interactions) and a weakening of the F/F interactions, due to an increase in repulsive interactions between the F atoms. There is no significant change in the potential of the F atoms due to coordination of C6-aromatic fluorides, as in the case of aliphatic ones. This results in slight changes in the strengths of the C–H/F and F/F interactions (coupled with parallel interaction at large offsets, PILO), in a noticeable enhancement of stacking interactions, as well as in a significant enhancement of interactions involving the π-system (F/π and C–H/π interactions). It has also been shown that a decrease in the charge of the metal ions leads to a decrease in the negative potential of the F atom and also that the nature of the metal ion has a significant influence on the value of the potential of the F atoms.",
publisher = "American Chemical Society (ACS)",
journal = "Crystal Growth and Design",
title = "Supramolecular Perspective of Coordination Effects on Fluorine Interactions",
volume = "21, 6142",
number = "11",
pages = "6129",
doi = "10.1021/acs.cgd.1c00584"
}

Petković-Benazzouz, M. M., Rakić, A., Trišović, N., Zarić, B.,& Janjić, G.. (2021). Supramolecular Perspective of Coordination Effects on Fluorine Interactions. in Crystal Growth and Design
American Chemical Society (ACS)., 21(11), 6129.
https://doi.org/10.1021/acs.cgd.1c00584

Petković-Benazzouz MM, Rakić A, Trišović N, Zarić B, Janjić G. Supramolecular Perspective of Coordination Effects on Fluorine Interactions. in Crystal Growth and Design. 2021;21(11):6129.
doi:10.1021/acs.cgd.1c00584 .

Petković-Benazzouz, Marija M., Rakić, Aleksandra, Trišović, Nemanja, Zarić, Božidarka, Janjić, Goran, "Supramolecular Perspective of Coordination Effects on Fluorine Interactions" in Crystal Growth and Design, 21, no. 11 (2021):6129,
https://doi.org/10.1021/acs.cgd.1c00584 . .

TY  - CONF
AU  - Janjić, Goran
AU  - Đorđević, Ivana
AU  - Lazić, Anita
AU  - Radovanović, Lidija
AU  - Petković-Benazzouz, Marija
AU  - Rogan, Jelena
AU  - Trišović, Nemanja
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7127
AB  - Kristalografska i kvantnohemijska studija, koja je usmerena na proučavanje efekata fluorovanja benzoil-grupe vezane za cikloheksan-5-spirohidantoin, pokazala je da aromatični prsten ima najveći afinitet prema cikloheksanskom prstenu (nepolarnim grupama), sa kojim gradi C–H∙∙∙π i 
paralelne interakcije sa velikim pomakom. Uvođenje atoma fluora na aromatični prsten dovodi do 
povećanog afiniteta, usled stvaranja dodatnih C–H∙∙∙F interakcija. Dodatno, ova studija je 
proširena na hlorovane i bromovane derivate. Analizom kristalnog pakovanja četiri derivata spirohidantoina (slika) pokazano je da orijentacija aromatičnog prstena, koja je preko rotabilne 
C(aromatični)–C(karbonilni) veze odvojena od rigidnog spirohidantoinskog jezgra, određuje
trodimenzionalnu supramolekulsku arhitekturu. Energijski profil rotabilne veze (slika) jako zavisi 
od vrste halogenog atoma vezanog za aromatični prsten (X). Najvišu barijeru (najmanju rotacionu 
slobodu) ima aromatični prsten sa Br atomom (oko 36 kcal/mol), dok najnižu barijeru imaju 
prstenovi sa vezanim Cl ili F atomom (oko 7 kcal/mol). Izmerene vrednosti torzionog ugla T 
(slika) u kristalnim stukturama, koji definiše rotabilnost ove veze, odgovaraju minimumima energije na energijskim profilima. Kod ovih orijentacija aromatični prstenovi istovremeno grade C–
H...π interakcije sa hidantoinskim prstenom i C–H...O interakciju sa karbonilnom grupom koja 
premošćuje dva prstena. Na osnovu ovih rezultata može se zaključiti da su orijentacije aromatičnog prstena određene unutarmolekulskim interakcijama, a ne međumolekulskim interakcijama, kao i da su konformacione razlike uzrok razlika u kristalnom pakovanju ovih jedinjenja.
AB  - The crystallographic and quantum chemical study, focused on the effects of fluorination of the 
benzoyl group bound to the spirohydantoin moiety, showed that the aromatic ring has the highest 
affinity towards the cyclohexene ring (nonpolar groups), thus forming C–H∙∙∙π and parallel interactions at large offset. Introduction of a fluorine atom into the aromatic ring leads to higher affinity, due to formation of additional C–H∙∙∙F interactions. Subsequently, the present study has been extended to chlorinated and brominated derivatives. An analysis of the crystal packaging of four spirohydantoin derivatives has shown that the orientation of the aromatic ring, bound to the rigid spirohydantoin moiety by the rotatable C(aromatic)–C(carbonyl) bond, determines the three-dimensional supramolecular architecture. The energy profile of the rotatable bond (Figure) strongly depends on the halogen atom bound to the aromatic ring (X). The highest barrier (the lowest rotational freedom) has been found for the aromatic ring with the Br atom (36 kcal/mol), while the rings with the Cl or F atom have the lowest barrier (7 kcal/mol). The measured values of the torsion angle T in the crystal structures which defines the rotability of the mentioned bond, correspond to the energy minima on the energy profiles. In these orientations, the aromatic ring simultaneously forms C–H...π interactions with the hydantoin ring and C–H...O interaction with the carbonyl spacer group. Based on these results, one can conclude that the orientation of the aromatic ring is defined by intramolecular interactions, not by intermolecular interactions, as well as that the conformational differences further cause differences in the crystal packaging of these compounds.
PB  - Serbian Crystallographic Society
C3  - Изводи радова - XXVII Конференција Српског кристалографског друштва, Крагујевац / Abstracts - 27th Conference of the Serbian crystallographic society , Kragujevac
T1  - Uticaj halogenovanja aromatičnog prstena na konformaciju spirohidantoinskih jedinjenja
T1  - Influence of halogenation of aromatic ring on the conformation of spirohydantoin compounds
SP  - 34
EP  - 35
UR  - https://hdl.handle.net/21.15107/rcub_cer_7127
ER  - 

@conference{
author = "Janjić, Goran and Đorđević, Ivana and Lazić, Anita and Radovanović, Lidija and Petković-Benazzouz, Marija and Rogan, Jelena and Trišović, Nemanja",
year = "2021",
abstract = "Kristalografska i kvantnohemijska studija, koja je usmerena na proučavanje efekata fluorovanja benzoil-grupe vezane za cikloheksan-5-spirohidantoin, pokazala je da aromatični prsten ima najveći afinitet prema cikloheksanskom prstenu (nepolarnim grupama), sa kojim gradi C–H∙∙∙π i 
paralelne interakcije sa velikim pomakom. Uvođenje atoma fluora na aromatični prsten dovodi do 
povećanog afiniteta, usled stvaranja dodatnih C–H∙∙∙F interakcija. Dodatno, ova studija je 
proširena na hlorovane i bromovane derivate. Analizom kristalnog pakovanja četiri derivata spirohidantoina (slika) pokazano je da orijentacija aromatičnog prstena, koja je preko rotabilne 
C(aromatični)–C(karbonilni) veze odvojena od rigidnog spirohidantoinskog jezgra, određuje
trodimenzionalnu supramolekulsku arhitekturu. Energijski profil rotabilne veze (slika) jako zavisi 
od vrste halogenog atoma vezanog za aromatični prsten (X). Najvišu barijeru (najmanju rotacionu 
slobodu) ima aromatični prsten sa Br atomom (oko 36 kcal/mol), dok najnižu barijeru imaju 
prstenovi sa vezanim Cl ili F atomom (oko 7 kcal/mol). Izmerene vrednosti torzionog ugla T 
(slika) u kristalnim stukturama, koji definiše rotabilnost ove veze, odgovaraju minimumima energije na energijskim profilima. Kod ovih orijentacija aromatični prstenovi istovremeno grade C–
H...π interakcije sa hidantoinskim prstenom i C–H...O interakciju sa karbonilnom grupom koja 
premošćuje dva prstena. Na osnovu ovih rezultata može se zaključiti da su orijentacije aromatičnog prstena određene unutarmolekulskim interakcijama, a ne međumolekulskim interakcijama, kao i da su konformacione razlike uzrok razlika u kristalnom pakovanju ovih jedinjenja., The crystallographic and quantum chemical study, focused on the effects of fluorination of the 
benzoyl group bound to the spirohydantoin moiety, showed that the aromatic ring has the highest 
affinity towards the cyclohexene ring (nonpolar groups), thus forming C–H∙∙∙π and parallel interactions at large offset. Introduction of a fluorine atom into the aromatic ring leads to higher affinity, due to formation of additional C–H∙∙∙F interactions. Subsequently, the present study has been extended to chlorinated and brominated derivatives. An analysis of the crystal packaging of four spirohydantoin derivatives has shown that the orientation of the aromatic ring, bound to the rigid spirohydantoin moiety by the rotatable C(aromatic)–C(carbonyl) bond, determines the three-dimensional supramolecular architecture. The energy profile of the rotatable bond (Figure) strongly depends on the halogen atom bound to the aromatic ring (X). The highest barrier (the lowest rotational freedom) has been found for the aromatic ring with the Br atom (36 kcal/mol), while the rings with the Cl or F atom have the lowest barrier (7 kcal/mol). The measured values of the torsion angle T in the crystal structures which defines the rotability of the mentioned bond, correspond to the energy minima on the energy profiles. In these orientations, the aromatic ring simultaneously forms C–H...π interactions with the hydantoin ring and C–H...O interaction with the carbonyl spacer group. Based on these results, one can conclude that the orientation of the aromatic ring is defined by intramolecular interactions, not by intermolecular interactions, as well as that the conformational differences further cause differences in the crystal packaging of these compounds.",
publisher = "Serbian Crystallographic Society",
journal = "Изводи радова - XXVII Конференција Српског кристалографског друштва, Крагујевац / Abstracts - 27th Conference of the Serbian crystallographic society , Kragujevac",
title = "Uticaj halogenovanja aromatičnog prstena na konformaciju spirohidantoinskih jedinjenja, Influence of halogenation of aromatic ring on the conformation of spirohydantoin compounds",
pages = "34-35",
url = "https://hdl.handle.net/21.15107/rcub_cer_7127"
}

Janjić, G., Đorđević, I., Lazić, A., Radovanović, L., Petković-Benazzouz, M., Rogan, J.,& Trišović, N.. (2021). Uticaj halogenovanja aromatičnog prstena na konformaciju spirohidantoinskih jedinjenja. in Изводи радова - XXVII Конференција Српског кристалографског друштва, Крагујевац / Abstracts - 27th Conference of the Serbian crystallographic society , Kragujevac
Serbian Crystallographic Society., 34-35.
https://hdl.handle.net/21.15107/rcub_cer_7127

Janjić G, Đorđević I, Lazić A, Radovanović L, Petković-Benazzouz M, Rogan J, Trišović N. Uticaj halogenovanja aromatičnog prstena na konformaciju spirohidantoinskih jedinjenja. in Изводи радова - XXVII Конференција Српског кристалографског друштва, Крагујевац / Abstracts - 27th Conference of the Serbian crystallographic society , Kragujevac. 2021;:34-35.
https://hdl.handle.net/21.15107/rcub_cer_7127 .

Janjić, Goran, Đorđević, Ivana, Lazić, Anita, Radovanović, Lidija, Petković-Benazzouz, Marija, Rogan, Jelena, Trišović, Nemanja, "Uticaj halogenovanja aromatičnog prstena na konformaciju spirohidantoinskih jedinjenja" in Изводи радова - XXVII Конференција Српског кристалографског друштва, Крагујевац / Abstracts - 27th Conference of the Serbian crystallographic society , Kragujevac (2021):34-35,
https://hdl.handle.net/21.15107/rcub_cer_7127 .