Category: chiral-nitrogen-ligands. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 5-(4-Pyridyl)-1H-tetrazole, is researched, Molecular C6H5N5, CAS is 14389-12-9, about Crystal structure of tetraaqua-bis(4-(5-tetrazolato)pyridyl-N)zinc(II) dihydrate, Zn(H2O)4(C6H4N5)2·2H2O. Author is Guo, J.-X.; Fu, F.; Li, D.-S.; Li, J.; Tang, L.; Qi, G.-C..
Crystallog. data and at. coordinates are given. In the crystal structure of Zn(4-PTZ)2(H2O)4.2H2O, the zinc atom has an approx. octahedral environment, where two 4 PTZ anions act as monodentate ligands via their pyridine-N atoms in trans positions [d(Zn-N) = 2.135(3) Å]. The structure also contains six water mols., four act as monodentate ligands [d(Zn-O1) = 2.122(2) Å, d(Zn-02) = 2.131(3) Å] and the remaining two as lattice water mols. Within the equatorial plane, the sum of the bond angles [Z 01-Zn-02 = 89.6(1)° and Z 02-Zn-O1′ = 90.4(1)°] around Zn(II) atom is 360°. The apical N-Zn-N bond angle is 180°. The environment of the central atom is similar to that of [Mn[5-(4-pyridyl)tetrazolato]2(H2O)4] [B. Zhang, 2005], in which the central Mn also has an octahedral environment and lies on the crystallog. inversion center. The supramol. title complex possesses two types of hydrogen bonds. One type occurs between coordinating water and lattice water mols. with d(O…O) = 2.741 Å – 2.771 Å and LO-H O… = 165.1 ° – 173.5 °. The other type is between the noncoordinating N atoms of the tetrazolato ligands and six water O atoms with d(N…O) = 2.779 – 2.924 Å and N-H…O = 159.4 – 176.7°. Through these hydrogen bonds, the adjacent mononuclear units are linked into infinite rows parallel to the b,c plane.
In addition to the literature in the link below, there is a lot of literature about this compound(5-(4-Pyridyl)-1H-tetrazole)Category: chiral-nitrogen-ligands, illustrating the importance and wide applicability of this compound(14389-12-9).
Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis