Unsymmetrical Zirconacyclopentadienes from Isolated Zirconacyclopropenes with 1-Alkynylphosphine Ligands
Miller, Adam D.; Johnson, Samuel A.; Tupper, Karl A.; McBee, Jennifer L.; Tilley, T. Don; Organometallics 28 (2009) 1252–; doi:10.1021/om801040t

data_4068695
_publ_section_title
;
 Unsymmetrical Zirconacyclopentadienes from Isolated Zirconacyclopropenes
 with 1-Alkynylphosphine Ligands
;
_journal_issue                   4
_journal_name_full               Organometallics
_journal_page_first              1252
_journal_paper_doi               10.1021/om801040t
_journal_volume                  28
_journal_year                    2009
_chemical_formula_moiety         'C48 H58 P2 Zr2'
_chemical_formula_sum            'C48 H58 P2 Zr2'
_chemical_formula_weight         879.32
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_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                 112.552(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   22.707(3)
_cell_length_b                   9.3642(13)
_cell_length_c                   21.053(3)
_cell_measurement_reflns_used    3840
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      24.71
_cell_measurement_theta_min      3.41
_cell_volume                     4134.2(10)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0498
_diffrn_reflns_av_sigmaI/netI    0.0547
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            9052
_diffrn_reflns_theta_full        24.71
_diffrn_reflns_theta_max         24.71
_diffrn_reflns_theta_min         3.36
_exptl_absorpt_coefficient_mu    0.614
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.8719
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'sadabs, 2004'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.413
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1824
_exptl_crystal_size_max          .4
_exptl_crystal_size_mid          .1
_exptl_crystal_size_min          .1
_refine_diff_density_max         0.667
_refine_diff_density_min         -0.423
_refine_diff_density_rms         0.073
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.907
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     235
_refine_ls_number_reflns         3487
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.907
_refine_ls_R_factor_all          0.0444
_refine_ls_R_factor_gt           0.0315
_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^)+(0.0484P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0774
_refine_ls_wR_factor_ref         0.0799
_reflns_number_gt                2624
_reflns_number_total             3487
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om801040t_si_002.cif
_cod_data_source_block           adam1m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               4068695