The first structurally authenticated alkali metal 1,3-diphosphaallyl complex [{ButC(PMes)2}Li(thf)3] (Mes = 2,4,6-Me3C6H2): an alternative synthetic approach to substituted 1,3-diphosphaallyl complexes
Liddle, Stephen T.; Izod, Keith; Chemical Communications (Cambridge, United Kingdom)  (2003) 772–773; doi:10.1039/b300272a

data_7104027
_publ_section_title
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 The first structurally authenticated alkali metal 1,3-diphosphaallyl
 complex [{ButC(PMes)2}Li(thf)3] (Mes = 2,4,6-Me3C6H2): an alternative
 synthetic approach to substituted 1,3-diphosphaallyl complexes
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_journal_coden_ASTM              CHCOFS
_journal_issue                   6
_journal_name_full
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 Chemical Communications (Cambridge, United Kingdom)
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_journal_page_first              772
_journal_page_last               773
_journal_paper_doi               10.1039/b300272a
_journal_year                    2003
_chemical_formula_moiety         '[MesP=C(But)P(X)Mes]'
_chemical_formula_sum            'C23 H31 Br0.36 Cl0.64 P2'
_chemical_formula_weight         420.87
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     heavy
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                109.001(2)
_cell_angle_beta                 92.033(2)
_cell_angle_gamma                98.202(2)
_cell_formula_units_Z            2
_cell_length_a                   8.8412(6)
_cell_length_b                   9.4818(6)
_cell_length_c                   14.4128(10)
_cell_measurement_reflns_used    7352
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      28.59
_cell_measurement_theta_min      2.29
_cell_volume                     1126.37(13)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL and local programs'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'Bruker SMART 1K CCD diffractometer'
_diffrn_measurement_method       '\w rotation with narrow frames'
_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  0.0189
_diffrn_reflns_av_sigmaI/netI    0.0265
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            8092
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.29
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.912
_exptl_absorpt_correction_T_max  0.7589
_exptl_absorpt_correction_T_min  0.5290
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.241
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             445
_exptl_crystal_size_max          0.80
_exptl_crystal_size_mid          0.70
_exptl_crystal_size_min          0.32
_refine_diff_density_max         0.317
_refine_diff_density_min         -0.276
_refine_diff_density_rms         0.047
_refine_ls_extinction_coef       0
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     245
_refine_ls_number_reflns         3930
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0370
_refine_ls_R_factor_gt           0.0307
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0386P)^2^+0.5733P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0781
_refine_ls_wR_factor_ref         0.0815
_reflns_number_gt                3422
_reflns_number_total             3930
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b300272a.txt
_cod_data_source_block           2
_cod_depositor_comments
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The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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 
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_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7104027