Spiritualitas cyber space : bagaimana teknologi?

324 p. : 23 cm

Spiritualitas cyber space: Bagaimana teknologi komputer mempengaruhi kehidupan keberagaman manusia/ Zaleski

324 hal.; 21 cm

Spiritualitas cyber space: Bagaimana teknologi komputer mempengaruhi kehidupan keberagaman manusia/ Zaleski

324 hal.; 21 cm

Spiritualitas cyber space: Bagaimana teknologi komputer mempengaruhi kehidupan keberagaman manusia/ Zaleski

324 hal.; 21 cm

Spiritualitas Cyber Space

324 hlm.;21 c

Bis(dimethylformamide)pentakis(μ-N,2-dioxidobenzene-1-carboximidato)tetrakis(1-methylimidazole)di-μ-propionato-pentamanganese(III)manganese(II)–dimethylformamide–methanol (1/0.24/1.36)

The title compound [Mn6(C7H4NO3)5(C3H5O2)2(C4H6N2)4.17(C3H7NO)1.83]·0.24C3H7NO·1.36CH3OH or Mn(II)(C3H5O2)2[15-MCMn(III)N(shi)-5](Me—Im)4.17(DMF)1.83·0.24DMF·1.36MeOH (where MC is metallacrown, shi3− is salicylhydroximate, Me—Im is 1-methylimidazole, DMF is N,N-dimethylformamide, and MeOH is methanol), contains an MnII ion in the central cavity and five MnIII ions in the MC ring. The central MnII ion is seven coordinate and has a geometry best described as distorted face-capped trigonal prismatic with Φ angles of 6.13, 10.36, and 11.73° and an estimated average s/h ratio of 1.03±0.11. Four of the ring MnIII ions are six coordinate with distorted octahedral geometries. Two of the MnIII ions have Λ absolute stereoconfiguration, while the other two MnIII ions have a planar configuration. The fifth MnIII ion is five coordinate and has a distorted square pyramidal geometry with τ = 0.20. Three of the MnIII ions bind one 1-methylimidazole ligand. Two of the ring MnIII ions have a 1-methylimidazole and a DMF disordered over a coordination site. For one of the ring MnIII ions, the occupancy ratio of the ligands refines to 0.51 (1):0.49 (1) in favor of the DMF. For the other ring MnIII ion, the occupancy ratio of the ligands refines to 0.68 (1):0.32 (1) in favor of the 1-methylimidazole. Two propionate anions serve to bridge the central MnII ion between two different MnIII ions. The methyl groups of the bridging propionate anions are disordered over two positions. The methyl group disorder also induces disorder in the H atoms of the adjacent methylene C atom to the same degree. For one of the propionate anions, the occupancy ratio refines to 0.752 (8):0.248 (8) and for the second, the occupancy ratio refines to 0.604 (6):0.396 (6). In addition, the disorder of the methyl group of the latter propionate anion is correlated with a partially occupied [0.604 (6)] methanol molecule. Furthermore, a methanol molecule and a DMF molecule are positionally disordered in the lattice. The occupancy refines to 0.757 (7):0.243 (7) in favor of the methanol molecule. Correlated to the occupancy of the methanol and DMF molecules is a disordered benzene ring of one salicylhydroximate ligand. The benzene ring is disordered over two positions with an occupancy ratio of 0.757 (7):0.243 (7). Lastly, the two lattice methanol molecules are hydrogen bonded to the 15-MC-5 molecule. For the partially occupied methanol molecule associated with the disordered propionate anion, the hydroxyl group of the methanol is hydrogen bonded to a carboxylate O atom of the propionate anion. For the partially occupied methanol molecule associated with the partially occupied lattice DMF molecule, the hydroxyl group of the methanol is hydrogen bonded to the phenolate O atom of a salicylhydroximate ligand and to the carbonyl O atom of a coordinated DMF molecule

Unique Dimerization Topology and Countercation Binding Modes in 12-Metallacrown-4 Compounds

Seven dimeric metallacrowns (MC) based on Ln[12-MCM(III)N(shi)-4], where LnIII=Dy, Ho, Yb, or Y, MIII=Mn or Ga, and shi3− is salicylhydroximate, have been synthesized and characterized by single-crystal X-ray diffraction, and for the dysprosium-manganese dimers, the magnetic properties have been measured. In each dimer two Ln[12-MCM(III)N(shi)-4] units are linked by four bridging dicarboxylate anions (isophthalate, trimesate, dinicotinate, or 2,2′-dithiodibenzoate). Three different countercations (sodium, gallium(III), or pyridinium) were used to maintain charge balance of the dimer. While pyridinium does not bind to the dimer, the choice of the dicarboxylate dictates where the countercations Na+ or GaIII bind. With isophthalate and trimesate, the sodium ion binds to the central MC cavity opposite of the LnIII, and with dinicotinate the sodium or gallium(III) ions bind to the pyridyl nitrogen of the dinicotinate. All three Dy2Mn8 dimers exhibit an out-of-phase magnetic susceptibility signal consistent with a shallow barrier to magnetization relaxation.The structures of seven dimeric heterometallic metallacrowns are described. Each dimer consists of two 12-metallacrown-4 units (ring metals Mn3+ or Ga3+) linked together by dicarboxylate anions (isophthalate, trimesate, dinicotinate, or 2,2′-dithiodibenzoate). Each metallacrown unit also contains one lanthanide ion bound to the central cavity. Lastly, the magnetism of the dysprosium-manganese dimers is examined, and each display slow magnetic relaxation.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/175227/1/ejic202200439_am.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/175227/2/ejic202200439.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/175227/3/ejic202200439-sup-0001-misc_information.pd