Crystal structure of poly[N,N-diethyl-2-hydroxyethan-1-aminium [μ₃-cyanido-κ³C:C:N-di-μ-cyanido-κ⁴C:N-dicuprate(I)]]

Abstract

A cyanide-bridged anionic three-dimensional network solid is described, with mol­ecular formula {Cu2(CN)3}−. Charge neutrality is provided by guest N-protonated N,N-di­ethyl­ethano­lamine mol­ecules.

Crystal structures of two mixed-valence copper cyanide complexes withN-methylethylenediamine

“…Trigonally coordinated Cu3 also links the Cu 2 (CN) 6 units together via CN bridges into single-stranded chains along the 8.231 (1) Å b axis, Fig. 4, similar to the double-stranded chains along the 8.356 (1) Å a axis seen in the polymeric compound (et 2 oenH)[Cu 2 (CN) 3 ], (Corfield et al, 2016), where et 2 oen is N,N-diethylethanolamine. The columns are further linked together by Cu3 to form a structure with channels, into which projects the coordinated Cumeen 2 unit, Fig.…”

“…The Cu-C and Cu-N distances listed in Table 1 show that the end-on CN bridging is not symmetrical, with Cu1-C1 and Cu1-C2 distances of 0.2-0.3 Å less than the corresponding bond lengths to Cu2. This asymmetry is the norm for such dimers, as noted in Corfield et al (2016). The assumed cuprophilic attraction distorts the tetrahedral coordination around Cu1, with the C1-Cu1-C2 angle opened up to 118.01 (13) , while the N4-Cu1-N5 angle opposite is reduced to 102.67 (12) .…”

“…In (I), 3 -CN cyanide groups C1 N1 and C2 N2 were found to be ordered, with the C atom bridging two Cu atoms, as in Corfield et al (2016). In addition, C5 N5 was found to have a clearly preferred orientation and was refined as an ordered group.…”

Crystal structures, electron spin resonance, and thermogravimetric analysis of three mixed-valence copper cyanide polymers

“…Such networks would be neutral not anionic, and might therefore be capable of crystallizing with neutral molecules as guests. We have made studies of several such complexes involving diamines (Corfield et al, 2016), but until recently we were less successful at isolating crystalline complexes of mixed-valence CuCN networks involving N-substituted ethanolamines. In the present article, we describe the isolation and structural characterization of crystals of three such mixed-valence CuCN networks, along with powder ESR data and thermogravimetric analyses: poly[bis(�-3-aminopropanolato)tetra-�-cyanido-dicopper(I)dicopper(II)], 1 (Scheme 1), with the base propanolamine, coordinated to Cu II as an alkoxide; poly[bis(2-aminopropanol)tetra-�-cyanido-dicopper(I)copper(II)], 2 (Scheme 2), with the base 2-aminopropan-1-ol; and poly[bis(2-aminoethanol)tetra-�-cyanidodicopper(I)copper(II)], 3 (Scheme 3), with the base ethanolamine.…”