Document Type

Article

Publication Date

Winter 2-2009

Abstract

The formation from aqueous solution of networks containing piperazinium hydrochlorides with copper(I) chloride is described. Four new X-ray crystal structures are reported: (H(2)Pip)[Cu(2)Cl(4)] (two isomeric phases: 1A and 1B), (H(2)MePip)[Cu(3)Cl(5)] (2), and (H(2)Me(2)Pip)[Cu(4)Cl(6)] (3) (Pip = piperazine, MePip = N-methylpiperazine, Me(2)Pip = N,N'-dimethylpiperazine. In 1A (P-1, a = 6.3141(2), b = 6.8248(2), c = 6.9067(2), alpha = 90.707(2), beta = 110.748(2), gamma = 110.799(2), V = 256.918(13), Z = 2) corner-sharing Cu(2)Cl(2) rhomboid dimers form infinite chains running parallel to the a-axis. In 1B (Pbcn, a = 9.9442(6), b = 8.0622(5), c = 13.1301(7), V = 1052.67(11), Z = 8) the Cu2Cl2 dimers are linked by mu-Cl into Cu(6)Cl(8) rings which form hexagonally tiled sheets running parallel to the a,b-plane. In 2 (P-1, a = 8.0815(7), b = 9.6584(9), c = 9.7900(8), alpha = 70.231(4), beta = 77.180 (4), gamma = 70.587(4), V = 673.05(10), Z = 2) alternating Cu(3)Cl(3) and Cu(4)Cl(4) rings are fused to form ribbons that run parallel to the a-axis. Copper-copper interactions are present. In 3 (C2/c, a = 17.4026(6), b = 10.5295(4), c = 11.7501 (8), beta = 131.5490(10), V = 1611.35(14), Z = 8) relatively long Cu center dot center dot center dot Cl interactions connect Cu(4)Cl(6) "adamantane'' units into chains running parallel to the c-axis. In all cases the piperazinium ions are independent from the chlorocuprate structures, but they do show N-H center dot center dot center dot Cl interactions.

Journal Title

JOURNAL OF CHEMICAL CRYSTALLOGRAPHY

DOI

10.1007/s10870-008-9442-7

Volume

39

Issue

2

Journal Article URL

https://link.springer.com/article/10.1007%2Fs10870-008-9442-7

First Page

131

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/s10870-008-9442-7.

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