TY  - JOUR
AU  - Hollo, Berta Barta
AU  - Szecsenyi, Katalin Meszaros
AU  - Deli, Maria
AU  - Kiss, Lorand
AU  - Kallay-Menyhard, Alfred
AU  - Živković-Radovanović, Vukosava
AU  - Tomić, Zoran D.
PY  - 2016
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2280
AB  - Synthetic paths toward the two polymorphs of a monohydrate, one anhydrous polymorph of 1-carboxamidino-5-hydroxy-3-methylpyrazole (hcmp) and two polymorphs of zinc complexes containing hcmp ligand are presented. By choosing ions which are not part of the final product, it is possible to direct the synthesis toward the particular polymorph. In all three modifications of hcmp, the same hydrogen bonding motif appears, leading to formation of similar molecular chains. Differences arise due to different modes of chain aggregation and the presence of solvent water. Analysis of the crystal packing and the energetic features of hcmp polymorphs is made using the PIXEL model. The thermal decomposition processes are examined using differential scanning calorimetry and thermogravimetry. Analysis of crystal packing in the two polymorphs of zinc complex suggests the key role of the hydrogen bonding capacity of the aqua ligand for the appearance of the two polymorphic forms. In both polymorphs of zinc complex, stacking interactions have an important role. However, the enhanced hydrogen bonding capacity of the aqua ligand influences the formation of multistacking arrangement.
PB  - Springer/Plenum Publishers, New York
T2  - Structural Chemistry
T1  - Anion-/cation-directed reaction routes to polymorphic forms of a pyrazole-type ligand and its coordination compounds with zinc. Key structural differences between polymorphs'
VL  - 27
IS  - 4
SP  - 1121
EP  - 1133
DO  - 10.1007/s11224-015-0734-1
ER  - 

@article{
author = "Hollo, Berta Barta and Szecsenyi, Katalin Meszaros and Deli, Maria and Kiss, Lorand and Kallay-Menyhard, Alfred and Živković-Radovanović, Vukosava and Tomić, Zoran D.",
year = "2016",
abstract = "Synthetic paths toward the two polymorphs of a monohydrate, one anhydrous polymorph of 1-carboxamidino-5-hydroxy-3-methylpyrazole (hcmp) and two polymorphs of zinc complexes containing hcmp ligand are presented. By choosing ions which are not part of the final product, it is possible to direct the synthesis toward the particular polymorph. In all three modifications of hcmp, the same hydrogen bonding motif appears, leading to formation of similar molecular chains. Differences arise due to different modes of chain aggregation and the presence of solvent water. Analysis of the crystal packing and the energetic features of hcmp polymorphs is made using the PIXEL model. The thermal decomposition processes are examined using differential scanning calorimetry and thermogravimetry. Analysis of crystal packing in the two polymorphs of zinc complex suggests the key role of the hydrogen bonding capacity of the aqua ligand for the appearance of the two polymorphic forms. In both polymorphs of zinc complex, stacking interactions have an important role. However, the enhanced hydrogen bonding capacity of the aqua ligand influences the formation of multistacking arrangement.",
publisher = "Springer/Plenum Publishers, New York",
journal = "Structural Chemistry",
title = "Anion-/cation-directed reaction routes to polymorphic forms of a pyrazole-type ligand and its coordination compounds with zinc. Key structural differences between polymorphs'",
volume = "27",
number = "4",
pages = "1121-1133",
doi = "10.1007/s11224-015-0734-1"
}

Hollo, B. B., Szecsenyi, K. M., Deli, M., Kiss, L., Kallay-Menyhard, A., Živković-Radovanović, V.,& Tomić, Z. D.. (2016). Anion-/cation-directed reaction routes to polymorphic forms of a pyrazole-type ligand and its coordination compounds with zinc. Key structural differences between polymorphs'. in Structural Chemistry
Springer/Plenum Publishers, New York., 27(4), 1121-1133.
https://doi.org/10.1007/s11224-015-0734-1

Hollo BB, Szecsenyi KM, Deli M, Kiss L, Kallay-Menyhard A, Živković-Radovanović V, Tomić ZD. Anion-/cation-directed reaction routes to polymorphic forms of a pyrazole-type ligand and its coordination compounds with zinc. Key structural differences between polymorphs'. in Structural Chemistry. 2016;27(4):1121-1133.
doi:10.1007/s11224-015-0734-1 .

Hollo, Berta Barta, Szecsenyi, Katalin Meszaros, Deli, Maria, Kiss, Lorand, Kallay-Menyhard, Alfred, Živković-Radovanović, Vukosava, Tomić, Zoran D., "Anion-/cation-directed reaction routes to polymorphic forms of a pyrazole-type ligand and its coordination compounds with zinc. Key structural differences between polymorphs'" in Structural Chemistry, 27, no. 4 (2016):1121-1133,
https://doi.org/10.1007/s11224-015-0734-1 . .