Bis(nitrato-κ O)(1,4,8,11-tetra-aza-cyclo-tetra-decane-κ4 N)zinc(II) methanol monosolvate

Yoshimi Ichimaru; Koichi Kato; Masaaki Kurihara; Wanchun Jin; Tohru Koike; Hiromasa Kurosaki

doi:10.1107/S2414314622008549

Bis(nitrato-κ O)(1,4,8,11-tetra-aza-cyclo-tetra-decane-κ⁴ N)zinc(II) methanol monosolvate

IUCrdata. 2022 Aug 31;7(Pt 8):x220854. doi: 10.1107/S2414314622008549. eCollection 2022 Aug.

Authors

Yoshimi Ichimaru¹, Koichi Kato¹, Masaaki Kurihara¹, Wanchun Jin², Tohru Koike³, Hiromasa Kurosaki²

Affiliations

¹ Faculty of Pharmaceutical Sciences, Shonan University of Medical Sciences, 16-48 Kamishinano, Totsuka-ku, Yokohama, Kanagawa 244-0806, Japan.
² College of Pharmacy, Kinjo Gakuin University, 2-1723 Omori, Nagoya 463-8521, Japan.
³ Department of Functional Molecular Science, Institute of Biochemical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan.

Abstract

The two Zn^II atoms in the crystal structure of the title complex, [Zn(NO₃)₂(C₁₀H₂₄N₄)]·CH₃OH, have a distorted octa-hedral coordination sphere, defined by 1,4,8,11-tetra-aza-cyclo-tetra-decane (cyclam) N atoms in the equatorial plane and nitrate O atoms in the axial sites. The conformation of the cyclam is trans-III (R, R, S, S), which is typical for metal-cyclam complexes. Nitrate anions are involved in intra- and inter-molecular hydrogen bonding with the N-H groups of the Zn^II-cyclam unit. Together with the methanol solvent mol-ecule, the hydrogen-bonding network connects the Zn^II-cyclam units into ribbons running parallel to the a axis.

Keywords: crystal structure; cyclam; zinc(II) complex.

Grants and funding

Funding for this research was provided by: Japan Society for the Promotion of Science (grant No. JP21K15244 to K. Kato; grant No. JP21K06455 to H. Kurosaki; grant No. JP20K07210 to T. Koike).