Easy ring expansion and contraction in Pt‒Sn bonded metallacycles
Janzen, Michael C.; Jenkins, Hilary A.; Jennings, Michael C.; Rendina, Louis M.; Puddephatt, Richard J.; Journal of the Chemical Society, Dalton Transactions  (1999) 1713–; doi:10.1039/a902991e

data_7027461
_publ_section_title
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 Easy ring expansion and contraction in Pt--Sn bonded metallacycles
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_journal_issue                   11
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              1713
_journal_paper_doi               10.1039/a902991e
_journal_year                    1999
_chemical_formula_sum            'C28 H42 N2 O4 Pt Se Sn'
_chemical_formula_weight         863.38
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           29
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2ac'
_symmetry_space_group_name_H-M   'P c a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   30.899(6)
_cell_length_b                   12.156(2)
_cell_length_c                   17.311(4)
_cell_measurement_temperature    150(2)
_cell_volume                     6502(2)
_computing_cell_refinement       'Nonius DENZO'
_computing_data_collection       'Nonius COLLECT'
_computing_data_reduction        'Nonius DENZO'
_computing_molecular_graphics    'Siemens SHELXTL 5.0'
_computing_publication_material  'Siemens SHELXTL 5.0'
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measurement_device       'Nonius Kappa CCD'
_diffrn_measurement_method       'phi/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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0368
_diffrn_reflns_limit_h_max       38
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            6852
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         4.10
_exptl_absorpt_coefficient_mu    6.218
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.764
_exptl_crystal_description       block
_exptl_crystal_F_000             3344
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.10
_refine_diff_density_max         2.109
_refine_diff_density_min         -0.971
_refine_diff_density_rms         0.132
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.492(11)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.045
_refine_ls_goodness_of_fit_obs   1.075
_refine_ls_matrix_type           full
_refine_ls_number_parameters     692
_refine_ls_number_reflns         6852
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.045
_refine_ls_restrained_S_obs      1.075
_refine_ls_R_factor_all          0.0366
_refine_ls_R_factor_obs          0.0293
_refine_ls_shift/esd_max         -0.002
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0411P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0651
_refine_ls_wR_factor_obs         0.0630
_reflns_number_observed          6137
_reflns_number_total             6852
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            902991esup1.cif
_cod_data_source_block           mj004b
_cod_depositor_comments
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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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0411P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0411P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_cell_volume        6502.1(23)
_cod_original_sg_symbol_H-M      Pca2(1)
_cod_database_code               7027461