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Details van artikel 67 van 73 gevonden artikelen
| Titel: |
THE PHENOMENON OF CONGLOMERATE CRYSTALLIZATION, PART 41. THE CRYSTALLIZATION BEHAVIOR OF (H5O2)[cis-α-Co(edda)ox](I), K[cis-β-Co(edda)ox]·H2O (II) AND K[cis-α-Co(edda)malonate]·3H2O (III) |
| Auteur: |
Bernal, Ivan Cai, Jiwen Jordan, William T. |
| Verschenen in: |
Journal of coordination chemistry |
| Paginering: | Jaargang 37 (1996) nr. 1-4 pagina's 283-298 |
| Jaar: |
1996-02-01 |
| Inhoud: |
(H5O2)[cis-α-Co(edda)ox]·H2O (I), CoO10N2C8H15, crystallizes, at 22°C, from a dilute HCl solution of K[cis-α-Co(edda)ox] in space group P21/n (a variant of No. 14), with lattice constants: a = 9.370(2), b = 9.872(3), c = 14.433(2) Å, β = 106.43(1)° V = 1280.50 Å3 and d(calc; MW = 358.15, Z = 4) = 1.858 g-cm-3. A total of 3687 data were collected over the range of 4° < 2θ < 50°; of these, 2572 (independent and with I > 3σ(I)) were used in the structural analysis. Data were corrected for absorption (μ = 13.902 cm-1) and the transmission coefficients ranged from 0.7678 to 0.9993. The final R(F) and Rw(F) residuals were, respectively 0.0378 and 0.0348. The anions exist in the lattice as enantiomeric pairs with chiropital descriptors Λ(δλλ)[cis-α-Co(edda)ox] and δ(λδλ)[cis-α-Co(edda)ox]. K[cis-β-Co(edda)ox]·H2O (II), CoKO9N2C8H12, crystallizes from water at 22°C in space group P21/c(No. 14), with lattice constants: a = 8.993(2), b = 10.302(3), c = 14.900(2) Å, β = 106.24(2)°; V = 1297.66 Å3 and d(calc; MW = 378.23, Z = 4) = 1.936 g-cm-3. A total of 3252 data were collected over the range of 4° > 2τ > 55°; of these, 1695 (independent and with I > 3σ(I)) were used in the structural analysis. Data were corrected for absorption (μ = 16.861 cm-1) and the transmission coefficients ranged from 0.8507 to 0.9978. The final R(F) and Rw(F) residuals were, respectively 0.0293 and 0.0302. The anions exist in the lattice as enantiomeric pairs with chiroptical descriptors δ(λδδ) and Λ(δλλ). K[cis-α-Co(edda)malonate]·3H2O (III), CoKO11N2C9H18, crystallizes from water at 22°C in space group P21/n (variant of No. 14), with lattice constants: a = 9.302(2), b = 10.962(4), c = 15.419(5) Å, β = 91.96(2)°; V = 1571.39 Å3 and d(calc; MW = 428.28, Z = 4) = 1.811 g-cm-3. A total of 4568 data were collected over the range of 4° < 2θ < 60°; of these, 3820 (independent and with I > 3σ(I)) were used in the structural analysis. Data were corrected for absorption (μ = 14.10 cm-1) and the transmission coefficients ranged from 0.8943 to 0.9982. The final R(F) and Rw(F) residuals were, respectively 0.041 and 0.063. The anions exist in the lattice as enantiometric pairs with chiroptical descriptors δ(λδλ)[cis-α-Co(edda)malonate] and Λ(δλδ)[cis-α-Co(edda)malonate]. The six-membered Co(malonato) ring is in the chair conformation. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 67 van 73 gevonden artikelen
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