ic990496p_si_001.cif (187.19 kB)
Adduct Formation between Alkali Metal Ions and Divalent Metal Salicylaldimine Complexes Having Methoxy Substituents. A Structural Investigation
dataset
posted on 2000-03-29, 00:00 authored by D. Cunningham, P. McArdle, M. Mitchell, N. Ní Chonchubhair, M. O'Gara, Federico Franceschi, Carlo FlorianiSodium, potassium, and cesium salts (iodides, nitrates, acetates, and tetraphenylborates) form 1/1, 1/2 and 2/3
adducts with MLn [M = Co, Ni, Cu, and Zn; n = 1−4; H2L1 = N,N‘-(3-methoxysalicylidene)ethane-1,2-diamine;
H2L2, H2L3, and H2L4 are the -propane-1,2-diamine, -o-phenylenediamine, and -propane-1,3-diamine analogues
of H2L1). Metal salicylaldimine, alkali metal, and anion all exert influence on stoichiometry and reactivity. Sodium
ions tend to reside within the planes of the salicylaldimine oxygens, as in Na(NO3)(MeOH)·NiL4 (1), Na(NO3)(MeOH)·CuL1 (2; both with unusual seven-coordinated sodium), and Na·(NiL4)2I·EtOH·H2O (3; with dodecahedral
sodium coordination geometry). Potassium and cesium tend to locate between salicylaldimine ligands as in KI·NiL4 (4) and [Cs(NO3)·NiL4]3·MeOH (5; structures with infinite sandwich assemblies), CsI·(NiL2)2·H2O (6),
CsI3·(NiL4)2 (7; simple sandwich structures), and [K(MeCN)]2·(NiL4)3 (8; a triple-decker sandwich structure).
Crystal data for 1 are the following: triclinic, P1, a = 7.3554(6) Å, b = 11.2778(10) Å, c = 13.562(2) Å, α =
96.364(10)°, β = 101.924(9)°, γ = 96.809(10)°, Z = 2. For 2, triclinic, P1, a = 7.2247(7) Å, b = 11.0427(6) Å,
c = 13.5610(12) Å, α = 94.804(5)°, β = 98.669(7)°, γ = 99.26(6)°, Z = 2. For 3, orthorhombic, Pbca, a =
14.4648(19) Å, b = 20.968(3) Å, c = 28.404(3) Å, Z = 8. For 4, triclinic, P1, a = 12.4904(17) Å, b = 13.9363(13) Å, c = 14.1060(12) Å, α = 61.033(7)°, β = 89.567(9)°, γ = 71.579(10)°, Z = 2. For 5, monoclinic. P21/n,
a = 12.5910(2) Å, b = 23.4880(2) Å, c = 22.6660(2) Å, β = 99.3500(1)°, Z = 4. For 6, orthorhombic, Pbca,
a = 15.752(3) Å, b = 23.276(8) Å, c = 25.206(6) Å, Z = 8. For 7, triclinic, P1, a = 9.6809(11) Å, b = 10.0015(13) Å, c = 11.2686(13) Å, α = 101.03°, β = 90.97°, γ = 100.55°, Z = 2. For 8, monoclinic, C2/c, a =
29.573(5) Å, b = 18.047(3) Å, c = 23.184(3) Å, β = 122.860(10)°, Z = 8.
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Keywords
Divalent Metal Salicylaldimine ComplexesCrystal data2.Alkali Metal Ionssalicylaldimine ligandsPbca8.Sodium ionsCsIStructural Investigation SodiumH 2 L 1H 2 L 3NatriclinicAdduct Formationcesium saltsML nalkali metalH 2 L 4salicylaldimine oxygensKINiLMeOHMethoxy Substituentsdodecahedral sodium coordination geometryMetal salicylaldimine
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