20.500.12556/RUL-152974 The [Zn(NH$_3$)$_4$]$^{2+}$ reactions with quinaldinate or pyrazinoate a ready synthetic route to zinc(II) coordination polymers? The reaction of [Zn(NH$_3$)$_4$]$^{2+}$ in aqueous ammonia solution with quinaldinic acid (quinoline-2-carboxylic acid) gave a mononuclear heteroleptic ammine/quinaldinate complex with the [Zn(quin)$_2$(NH$_3$)] composition. The introduced secondary ligand adopted the usual N,O-bidentate chelating coordination. In the analogous reaction with pyrazinoic acid (pyrazine-2-carboxylic acid), complete substitution of ammonia with pyrazionate and water was observed. A mixture of two compounds formed: a mononuclear and already known [Zn(pyraz)$_2$(H$_2$O)$_2$] and a novel one-dimensional (1D) coordination polymer [Zn(pyraz)$_2$(H$_2$O)]$_n$. X-ray structure analysis revealed the pyrazinoate ligands in [Zn(pyraz)$_2$(H$_2$O)]$_n$ in two binding modes, in a bidentate chelating coordination and in a tridentate bridging coordination. The bridging pyrazinoate has engaged in binding three out of four donors: a carboxylate oxygen and both nitrogen atoms. A detailed presentation of the structure of [Zn(pyraz)$_2$(H$_2$O)]$_n$ and its comparison with the structures of related compounds are given below. coordination compounds coordination polymers zinc(II) quinaldinate pyrazinoate crystal structure koordinacijske spojine koordinacijski polimeri cink(II) kinaldinat pirazinoat kristalna struktura true false true Angleški jezik Slovenski jezik Članek v reviji 2023-12-13 11:29:53 2023-12-13 11:29:54 2024-09-30 16:32:17 0000-00-00 00:00:00 2024 0 0 5 str. Vol. 159, art. 111831 Jan. 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 546.47:547.8 1387-7003 10.1016/j.inoche.2023.111831 177212163 1-s2.0-S1387700323014430-main.pdf 1-s2.0-S1387700323014430-main.pdf 1 B8B15AFE52FB57C373E627F1B4D97886 e809bd49407581746799abac8c9d4bb7f1275a290072311109ebe266fe1c53e8 d9421f5b-99a2-11ee-9499-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=178733 https://www.sciencedirect.com/science/article/pii/S1387700323014430 1 8e307b9a-99a2-11ee-9499-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=178732 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0