Preparation of buta-1,3-diynyl complexes of platinum(II) and their use in the construction of neutral molecular squares: synthesis, structural and theoretical characterisation of cyclo-{Pt(μ-CCCC)(dppe)}4 and related chemistry
Michael I. Bruce; Karine Costuas; Jean-François Halet; Ben C. Hall; Paul J. Low; Brian K. Nicholson; Brian W. Skelton; Allan H. White; J. Chem. Soc., Dalton Trans.  (2002) 383–398; doi:10.1039/b107929h

data_7011130
_publ_section_title
;
 Preparation of buta-1,3-diynyl complexes of platinum(II) and their use
 in the construction of neutral molecular squares: synthesis,
 structural and theoretical characterisation of
 cyclo-{Pt(\m-CCCC)(dppe)}4 and related chemistry
;
_journal_issue                   3
_journal_name_full               'J. Chem. Soc., Dalton Trans.'
_journal_page_first              383
_journal_page_last               398
_journal_paper_doi               10.1039/b107929h
_journal_year                    2002
_chemical_formula_sum            'C36 H30 Cl4 P2 Pt'
_chemical_formula_weight         861.48
_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'
_cell_angle_alpha                90.00000
_cell_angle_beta                 109.59(6)
_cell_angle_gamma                90.00000
_cell_formula_units_Z            4
_cell_length_a                   28.611(16)
_cell_length_b                   8.958(3)
_cell_length_c                   14.718(14)
_cell_measurement_reflns_used    14
_cell_measurement_temperature    293
_cell_measurement_theta_max      21.6
_cell_measurement_theta_min      18.5
_cell_volume                     3554(4)
_computing_cell_refinement       'Enraf Nonius software'
_computing_data_collection       'Enraf Nonius software'
_computing_data_reduction        xtal
_computing_molecular_graphics    xtal
_computing_publication_material  'xtal BONDLA CIFIO'
_computing_structure_refinement  xtal
_computing_structure_solution    xtal
_diffrn_ambient_temperature      293
_diffrn_measurement_device_type
;
CAD4 diffractometer
;
_diffrn_measurement_method       '2\q-\w scans'
_diffrn_radiation_detector       'scintillation counter'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     .71073
_diffrn_reflns_limit_h_max       34
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            5002
_diffrn_reflns_theta_max         30
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  60
_diffrn_standards_number         14
_exptl_absorpt_coefficient_mu    4.363
_exptl_absorpt_correction_T_max  .43
_exptl_absorpt_correction_T_min  .24
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
;
XTAL absorb               
;
_exptl_crystal_density_diffrn    1.61
_exptl_crystal_description       fragment
_exptl_crystal_F_000             1552
_exptl_crystal_size_max          0.65
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.22
_refine_diff_density_max         1.54
_refine_diff_density_min         -1.23
_refine_ls_goodness_of_fit_all   1.76
_refine_ls_goodness_of_fit_ref   1.95
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_constraints    0
_refine_ls_number_parameters     198
_refine_ls_number_reflns         3371
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          .099
_refine_ls_R_factor_gt           .071
_refine_ls_shift/su_max          .045
_refine_ls_shift/su_mean         .0018
_refine_ls_structure_factor_coef F
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         .076
_refine_ls_wR_factor_ref         .074
_reflns_limit_h_max              34
_reflns_limit_h_min              0
_reflns_limit_k_max              12
_reflns_limit_k_min              0
_reflns_limit_l_max              19
_reflns_limit_l_min              -19
_reflns_number_gt                3371
_reflns_number_observed          3371
_reflns_number_total             5002
_reflns_threshold_expression     'I    > 3.00 sig(I   )'
_cod_data_source_file            b107929h.txt
_cod_data_source_block           br494
_cod_original_sg_symbol_Hall     -c_2yc
_cod_original_sg_symbol_H-M      C_1_2/c_1
_cod_original_formula_sum        'C36 H30 Cl4 P2 Pt1'
_cod_database_code               7011130