Hetero-metallic frameworks of [Pd(CN)4]2− and Cu(II) with triamines: A rare example of a tetracyanometallate bridged 2D coordination polymer
摘要:
Four cyano bridged Cu(II)-Pd(II) heterometallic complexes, [Cu(dpt)Pd(CN)(4)](n) (1), {[Cu-2(medpt)(2)Pd(CN)(4)](ClO4)(2) center dot 3H(2)O}(n) (2), {[Cu-2(dien)(2)Pd(CN)(4)](ClO4)(2)center dot 2CH(3)OH}(n) (3) and {[Cu-2(iPrdien)(2)Pd(CN)(4)](ClO4)(2)center dot 2H(2)O}(n) (4) [dpt=3,3'-iminobispropylamine; medpt = 3,3'-diamino-N-methyldipropylamine; dien = diethylenetriamine and iprdien = N'-isopropyldiethylenetriamine] have been synthesized and characterized by single crystal X-ray diffraction analysis, magnetic measurement and thermal study. Complexes 1, 2 and 3 are ID coordination polymers, while 4 presents a 2D network. In 1, the cis-directed cyanide ligands of [Pd(CN)(4)](2-) anions link two Cu(dpt) units to form a neutral coordination polymer, whereas in 2, 3 and 4, all the cyanide groups of [Pd(CN)(4)](2-) take part in bonding with four adjacent Cu(II) ions, resulting in cationic coordination polymers counterbalanced by perchlorate anions. The structures are compared with those of analogous [Ni(CN)(4)](2-) derivatives. The magnetic behavior shows antiferromagnetic interactions in all the complexes. (c) 2007 Elsevier Ltd. All rights reserved.