20.500.12556/RUL-182366 Supramolecular diversity in metal–organic hybrids with $[VO_2(2,6-pydc)]^−$ anion and piperazine and its derivatives Ten compounds have been prepared among them six different dioxido(pyridine-2,6-dicarboxylato)vanadate(V) compounds with piperazinium (H$_2$pip$^{2+}$) (1·6H$_2$O), methylpiperazinium (H$_2$mepip$^{2+}$) (2·5H$_2$O), ethylpiperazinium (H$_2$etpip$^{2+}$) (3·3H$_2$O), isopropylpiperazinium (H$_2$isopip$^{2+}$) (4·H$_2$O), phenylpiperazinium (Hphepip$^+$) (5∙H$_2$O) and thiomorpholinium 1-oxide (HtmorO$^+$) (6·2,6-H$_2$pydc·2H$_2$O) cations as counterions as well as methylpiperazinium (H$_2$mepip$^{2+}$) salt of a mixed valence vanadium [VO(2,6-pydc)-(μ-O)-VO(H$_2$O)(2,6-pydc)]$^−$ complex (7), thiomorpholin-4-ium vanadate (Htmor)VO$_3$ (8), hexa(thiomorpholin-4-ium) decavanadate hexahydrate (Htmor)$_6$[V$_{10}$O$_{28}$]·6H$_2$O (9·6H$_2$O) and organic salt cocrystal thiomorpholin-4-ium 6-carboxypicolinate pyridine-2,6-dicarboxylic acid (Htmor)$^+$(2,6-Hpydc)$^−$∙(2,6-H$_2$pydc)·2H$_2$O (10·2H$_2$O) via different pathways starting either from pyridine-2,6-dicarboxylic acid or its esters, and were structurally characterized by single-crystal X-ray diffraction. Extended hydrogen bonding interactions are present due to the presence of organic cations as well as due to the diverse roles of water molecules in the hydrogen bonding network. Centrosymmetric hydrogen bonding was found to be an important motif, and diverse supramolecular patterns were also observed due to a wide variety of C–H···O and π···π interactions stabilizing the crystal lattices. vanadium metal complexes supramolecular interactions crystal structure vanadij kovinski kompleksi supramolekularne interakcije kristalna struktura true false true Angleški jezik Slovenski jezik Članek v reviji 2026-05-08 11:25:12 2026-05-08 11:25:14 2026-05-11 11:03:26 0000-00-00 00:00:00 2026 0 0 21 str. iss. 4, art. 679 Vol. 18 Apr. 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 546.881:547.82:544.1 2073-8994 10.3390/sym18040679 277401091 RAZ_Hozjan_Misel_2026.pdf RAZ_Hozjan_Misel_2026.pdf 1 48BDD1B6422FE94AD5E30371E96F1170 8ff09d87a9f18dbf3c52b9780350d6fc28592b0efdf876a72d28445371c69c8f ea6a2883-4ac0-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=233545 https://www.mdpi.com/2073-8994/18/4/679 1 8672b56b-4abf-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=233544 Fakulteta za kemijo in kemijsko tehnologijo Supramolecular diversity in metal–organic hybrids with [VO$_2$(2,6-pydc)]$^–$ anion and piperazine and its derivatives Supramolecular diversity in metal–organic hybrids with [VO$_2$(2,6-pydc)]$^–$ anion and piperazine and its derivatives 0 0 0