TY - JOUR
T1 - The structure of aqua-hydroxo double salts
AU - Ardon, Michael
AU - Bino, Avi
AU - Jackson, W. Gregory
PY - 1987
Y1 - 1987
N2 - The preparation and structure of two so-called aqua-hydroxo double salts of cobalt(III) are reported. X-ray structural analysis showed the compounds not to be double salts of two distinct mononuclear cations but to contain one binuclear cation in which the two equivalent cobalt atoms are bridged by a hydrogen oxide ligand (μ-H3O2). Compound 1, trans-{[Co(en)2NO2]2(H3O2)}(C1O4)3·2H2O forms monoclinic crystals, space group P21/n, with a = 12.098(2) Å, b = 8.981(1) Å, c = 14.415(2) Å, β = 93.39(2)°, V = 1563(1) Å3 and Z = 2. Compound 2, trans-{[Co(en)2NCS]2(H3O2)}(CF3SO3)3·H2O forms triclinic crystals, space group P1 with a = 12.864(2) Å, b = 14.429(2) Å, c = 11. 177(1) Å, α = 105.21(3)°, β = 100.33(2)°, γ = 65.96(2)°, V = 1822(1) Å3 and Z = 2. The two structures were refined by least-squares methods to residuals of R = 0.077, Rw = 0.087 and R = 0.063, Rw = 0.069, respectively. In 1, the dimer resides on a crystallographic inversion center and the O⋯O separation in the H3O2 bridge is 2.412(9) Å. In 2 there is no crystallographic symmetry imposed upon the dimer but the two CoO(H3O2) distances are identical within the experimental error. The O⋯O length in the H3O2 unit is 2.415(6) Å.
AB - The preparation and structure of two so-called aqua-hydroxo double salts of cobalt(III) are reported. X-ray structural analysis showed the compounds not to be double salts of two distinct mononuclear cations but to contain one binuclear cation in which the two equivalent cobalt atoms are bridged by a hydrogen oxide ligand (μ-H3O2). Compound 1, trans-{[Co(en)2NO2]2(H3O2)}(C1O4)3·2H2O forms monoclinic crystals, space group P21/n, with a = 12.098(2) Å, b = 8.981(1) Å, c = 14.415(2) Å, β = 93.39(2)°, V = 1563(1) Å3 and Z = 2. Compound 2, trans-{[Co(en)2NCS]2(H3O2)}(CF3SO3)3·H2O forms triclinic crystals, space group P1 with a = 12.864(2) Å, b = 14.429(2) Å, c = 11. 177(1) Å, α = 105.21(3)°, β = 100.33(2)°, γ = 65.96(2)°, V = 1822(1) Å3 and Z = 2. The two structures were refined by least-squares methods to residuals of R = 0.077, Rw = 0.087 and R = 0.063, Rw = 0.069, respectively. In 1, the dimer resides on a crystallographic inversion center and the O⋯O separation in the H3O2 bridge is 2.412(9) Å. In 2 there is no crystallographic symmetry imposed upon the dimer but the two CoO(H3O2) distances are identical within the experimental error. The O⋯O length in the H3O2 unit is 2.415(6) Å.
UR - http://www.scopus.com/inward/record.url?scp=0003374550&partnerID=8YFLogxK
U2 - 10.1016/S0277-5387(00)80787-1
DO - 10.1016/S0277-5387(00)80787-1
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:0003374550
SN - 0277-5387
VL - 6
SP - 181
EP - 187
JO - Polyhedron
JF - Polyhedron
IS - 2
ER -