BARTCZAK, TJYAGBASAN, R2024-08-042024-08-0419910108-2701https://doi.org/10.1107/S0108270191000689https://hdl.handle.net/11616/102154C9H17O4P, M(r) = 220.20, monoclinic, P2(1), a = 12.385 (4), b = 6.590 (3), c = 13.394 (4) angstrom, beta = 98.00 (3)degrees, V = 1082.54 angstrom 3, Z = 4, D(x) = 1.351 g cm-3, lambda(Cu K-alpha) = 1.54178 angstrom, mu = 21.9 cm-1, F(000) = 472, T = 296 K, R(F) = 0.044, wR(F) = 0.048 for 1850 observed reflections [I(o) > 3-sigma(I(o))] and 253 parameters. The asymmetric unit consists of two independent molecules which have almost identical but inverted conformations. Molecule 1: The five-membered phospholane ring exists in an envelope conformation with C(3) at the flap [the asymmetry parameter DELTA-C(s)C(9) = 2.35 (6)degrees]. The six-membered cyclohexane ring is a slightly twisted chair [DELTA-C(s)C(5) = 1.93 (6), DELTA-C2C(3),C(4) = 6.33 (6)degrees]. The rings are trans-fused and the hydroxyl group O(4) is anti to the phosphoryl group P(1)-O(1). Molecule 2: The five-membered phospholane ring is a slightly twisted envelope with C(13) at the flap [DELTA-C(s)C(13) = 3.85 (6)degrees]. The fused six-membered cyclohexane ring is almost an ideal chair [DELTA-C(s)C(14),C(17) = 1.08 (6), DELTA-C2C(13),C(18) = 0.16 (6)degrees]. The rings are trans-fused and the hydroxyl group O(14) is anti to the phosphoryl group P(2)-O(11).eninfo:eu-repo/semantics/closedAccess[No Keywords]Note471750175210.1107/S0108270191000689WOS:A1991GC56900067N/A