Document Type

Article

Publication Date

Fall 9-2-2006

Abstract

The coordination chemistry of 2-aminopyrimidine (PymNH(2)) with nickel(II) and cobalt(II) nitrate and chloride is reported, including seven new X-ray crystal structures. Two [Ni(NO3)(2)(PymNH(2))(2)(OH2)] isomers were found (A: C2/c, a=13.3006(5), b=7.9727(3), c=28.5453(11), beta=101.758(2), V=2963.48(19), Z=8 and B center dot 1/2 acetone: P2(1)/c, a=7.66060(10), b=10.6792(2), c=20.6790(3), beta=100.2970(10), 1664.48(5), Z=4). In both cases one nitrate is monodentate and the other is chelating and the PymNH(2) ligands coordinate through ring nitrogen atoms. Hydrogen bonding results in double sheet structure for isomer A, and a three dimensional channeled network for isomer B. [Co(NO3)(2)(PymNH(2))(2)(OH2)] (C2/c, a=13.3507(2), b=7.99520(10), c=28.6734(3), beta=102.3540(10), V=2989.77(7), Z=8) is isostructural to Ni isomer A. [CoCl2(PymNH(2))] (Cmcm, a=3.6139(2), b=14.3170(7), c=12.9986(7), V=672.55(6), Z=4) is a sheet coordination network, consisting of corner-sharing chains of Co-2(mu-Cl)(2) bridged by PymNH(2) through ring nitrogen atoms; [CoCl2(PymNH(2))(2)] (C2/c, a=11.2774(6), b=6.5947(4), c=16.5687(9), beta=92.269(3), V=1231.27(12), Z=4) is a tetrahedral molecule knit into a ribbon structures through pairs of hydrogen bonds. Isostructural trans-[NiCl2(PymNH(2))(4)] (C2/c, a=7.67760(10), b=18.7224(3), c=15.0418(2), beta=99.6740(10), V=2131.41(5), Z=4) and trans-[CoCl2(PymNH(2))(4)] (C2/c, a=7.69120(10), b=18.5957(2), c=15.1091(2), beta=99.5280(10), V=2131.14(5), Z=4) are simple octahedral molecules, with hydrogen-bonding producing sheet structures.

Journal Title

JOURNAL OF CHEMICAL CRYSTALLOGRAPHY

DOI

10.1007/s10870-006-9138-9

Volume

36

Issue

11

Journal Article URL

https://link.springer.com/article/10.1007%2Fs10870-006-9138-9

First Page

781

Publisher Statement

“This is a post-peer-review, pre-copyedit version of an article published in the Journal of Chemical Crystallography. The final authenticated version is available online at: 10.1007/s10870-006-9138-9.

Share

COinS