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[1‐Allylpyridinium][Cu 2 Cl 3 ]: Synthesis, X‐ray Structure and the Regularity of Crystal Architecture of 1‐Allyl/(amino)‐pyridinium Copper(I) Chloride π‐Complexes
Author(s) -
Pavlyuk O. V.,
Goreshnik E. A.,
Ciunik Z.,
Mys'kiv M. G.
Publication year - 2005
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200400446
Subject(s) - copper , monoclinic crystal system , chemistry , crystal structure , crystallography , chloride , pyridinium , copper(ii) chloride , electrochemistry , chlorine , stereochemistry , medicinal chemistry , organic chemistry , electrode
Abstract By alternating‐current electrochemical technique crystals of copper(I) π‐complex with 1‐allylpyridinium chloride of [C 5 H 5 N(C 3 H 5 )][Cu 2 Cl 3 ] ( 1 ) composition have been obtained and structurally investigated. Compound 1 crystallizes in monoclinic system, space group C2/ c a = 24.035(1) Å, b = 11.4870(9) Å, c = 7.8170(5) Å, β = 95.010(5)°, V = 2150.0(2) Å 3 (at 100 K), Z = 8, R = 0.028, for 4836 independent reflections. In the structure 1 trigonal‐pyramidal environment of π‐coordinated copper(I) atom is formed by a lengthened to 1.376(2) Å C=C bond of allyl group and by three chlorine atoms. Other two copper atoms are tetrahedrally surrounded by chlorine atoms only. The coordination polyhedra are combined into an original infinite (Cu 4 Cl 6 2— ) n fragment. Structural comparison of 1 and the recently studied copper(I) chloride π‐complexes with 3‐amino‐, 2‐amino‐, 4‐amino‐1‐allylpyridinium chlorides of respective [LCu 2 Cl 3 ] ( 2 ), [L 2 Cu 2 Cl 4 ] ( 3 ), and [LCuCl 2 ] ( 4 ) compositions allowed us to reveal the trend of the inorganic fragment complication which depends on pKa (base) value of the corresponding initial heterocycle.