A concise synthesis of a rigid isomannide-based diphosphine ligand and structural characterisation of an alkoxyphosphonium intermediate
Athanasia Dervisi; Cristina Carcedo; Ian A. Fallis; K.M Abdul Malik; Chemical communications (Cambridge, England)  (2004) 1236–1237; doi:10.1039/b401301h

data_7102636
_publ_section_title
;
A concise synthesis of a rigid isomannide-based
diphosphine ligand and structural characterisation of an
alkoxyphosphonium intermediate
;
_journal_issue                   10
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              1236
_journal_page_last               1237
_journal_paper_doi               10.1039/b401301h
_journal_year                    2004
_chemical_formula_moiety         'C30 H28 O2 P2'
_chemical_formula_sum            'C30 H28 O2 P2'
_chemical_formula_weight         482.46
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.5522(9)
_cell_length_b                   14.0034(11)
_cell_length_c                   15.4518(14)
_cell_measurement_reflns_used    'all obs. reflections in the data set'
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      24.78
_cell_measurement_theta_min      3.01
_cell_volume                     2499.6(4)
_computing_cell_refinement       'DENZO (Otwinowski & Minor, 1997)'
_computing_data_collection       'DENZO (Otwinowski & Minor, 1997)'
_computing_data_reduction        'DENZO (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-96 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker Nonius kappa CCD area detector'
_diffrn_measurement_method       'phi & omega scan to fill Ewald sphere'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.2142
_diffrn_reflns_av_sigmaI/netI    0.1577
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            24363
_diffrn_reflns_theta_full        24.78
_diffrn_reflns_theta_max         24.78
_diffrn_reflns_theta_min         3.01
_exptl_absorpt_coefficient_mu    0.200
_exptl_absorpt_correction_T_max  0.9921
_exptl_absorpt_correction_T_min  0.9707
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SORTAV (Blessing, 1997)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.282
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle-like
_exptl_crystal_F_000             1016
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.594
_refine_diff_density_min         -0.270
_refine_diff_density_rms         0.056
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.14(19)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.985
_refine_ls_hydrogen_treatment    'calculated positions, riding model'
_refine_ls_matrix_type           full
_refine_ls_number_parameters     308
_refine_ls_number_reflns         4278
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.985
_refine_ls_R_factor_all          0.1324
_refine_ls_R_factor_gt           0.0731
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0456P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1400
_refine_ls_wR_factor_ref         0.1602
_reflns_number_gt                2623
_reflns_number_total             4278
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b401301h.txt
_cod_data_source_block           ddppm
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7102636