Bis(6-methoxy-1-methyl-2,3,4,9-tetrahydro-1H-β-carbolin-2-ium) tetrachloridozincate(II) dihydrate

Abstract

The asymmetric unit of the title compound, (C13H17N2O)2[ZnCl4]·2H2O, contains two tetra­hydro­harmine cations, one tetra­chloro­zincate(II) anion and two water mol­ecules. In the cations, the two 1H-indole ring systems are essentially planar, with maximum deviations of 0.016 (2) and 0.018 (2) Å, and both tetra­hydro­pyridinium rings show a half-chair conformation. The ZnII complex anion has a distorted tetra­hedral geometry. In the crystal, inter­molecular N—H⋯O, N—H⋯Cl, O—H⋯O, O—H⋯Cl and C—H⋯O hydrogen bonds link the components into a three-dimensional network. A π–π inter­action with a centroid–centroid distance of 3.542 (14) Å is also observed.

6-Methoxy-1-(4-methoxyphenyl)-1,2,3,4-tetrahydro-9H-β-carbolin-2-ium acetate

“…All bond lengths and angles in the title compound ( Fig. 1) are within normal ranges and comparable with those observed for a related compound recently reported (Goh et al, 2012). The 1H-indole ring (C1-C7/C11/N1) is planar with a maximum deviation of 0.0257 (14) Å for atom C11 and forms a dihedral angle of 87.92 7 (Table 1) into one-dimensional chains along the a axis (Fig.…”

NMR structural assignments for four new 6‐methoxy‐tetrahydro‐ß‐carboline derivatives

“…Ring C (H‐1‐N‐H (2)‐H‐3‐H‐4) of compound 3 adopts a half‐chair conformation as determined by means of single‐crystal X‐ray diffraction analysis . Similar configuration was obtained for compound 2.…”

Structural characterization of two tetrachloridozincate salts of 4-carboxy-1H-imidazol-3-ium: a salt hydrate and a co-crystal salt hydrate

“…examples of tetrachloridozincate salts (Govindan et al, 2014a,b;Leesakul et al, 2012;Goh et al, 2012;Kefi et al, 2011). The same example structures exhibit Cl-Zn-Cl angles in the range 102.256 (10) to 112.72 (3) .…”

“…The structures of numerous imidazolium salts are known (e.g., Mohamed et al,, 2014;Trifa et al, 2013;Ché rif et al, 2013;Yu, 2012;Zhu, 2012;Ishida & Kashino, 2001;Gili et al, 2000;Pavan Kumar & Kumara Swamy, 2005;Hashizume et al, 2001;Moreno-Fuquen et al, 2009a,b, 2011Sun et al, 2002;Fukunaga & Ishida, 2003). There are many examples of reported structures of tetrachloridozincate salts (e.g., Govindan et al, 2014a,b;Leesakul et al, 2012;Goh et al, 2012;Kefi et al, 2011).…”