ISSN:
0009-2940
Keywords:
Coordination polymers
;
Ion channels
;
Copper compounds
;
Bond-stretch isomerism
;
Hydrated chlorine ions
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
[Co{HB(C2H2N3)3}2] reacts with an excess of CuCl2 in hot water with formation of ∞2[Cu2Cl2{μ3-HB(C2H2N3)3}2 · 2 H2O] (7) or ∞3{[Cu2{μ4-HB(C2H2N3)3} (μ-OH)2]Cl · 6 H2O} (8), depending on the reaction time. 8 can also be obtained from [Cu{HB(C2H2N3)3}2] and CuCl2 in aqueous ammonia. The 2-D double-layer-type coordination polymer 7 crystallizes in the orthorhombic space group P212121. The two different Cu(II) centers in the lattice are distinguished only be the direction of the Jahn-Teller distortion. The following corresponding distances for the CuClN5 coordination sphere were found Cu1/Cu2-Cl = 2.572(2)/2.328(2), Cu1/Cu2-N = 2.585(5)/2.077(4); 2.000(4)/1.979(5); 2.100(5)/2.734(5); 2.005(4)/1.994(4); 2.024(5)/2.369(5). In the 3-D coordination polymer 8 one of the two different Cu centers is chelated by the three endodentate nitrogen donors, while the other Cu center is coordinated by three exodentate nitrogen atoms. The coordination sphere is completed in both cases by two hydroxo bridges to symmetry-related Cu centers. The metal-ligand connectivity creates infinite channels with helical walls which contain the solvated chloride anions.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19961290903
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