Studies of ansa-bis(cyclopentadienyl)tungsten derivatives
Conway, Stephen L. J.; Dijkstra, Tessa; Doerrer, Linda H.; Green, Jennifer C.; Green, Malcolm L. H.; Stephens, Adam H. H.; Journal of the Chemical Society, Dalton Transactions  (1998) 2689–; doi:10.1039/a803076f

data_7028095
_publ_section_title
;
 Studies of ansa-bis(cyclopentadienyl)tungsten derivatives
;
_journal_issue                   16
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              2689
_journal_paper_doi               10.1039/a803076f
_journal_year                    1998
_chemical_compound_source
;
?
;
_chemical_formula_moiety         ' C18 H26 W1 '
_chemical_formula_sum            'C18 H26 W'
_chemical_formula_weight         426.26
_chemical_melting_point          ?
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_cell_angle_alpha                90.
_cell_angle_beta                 105.04(2)
_cell_angle_gamma                90.
_cell_formula_units_Z            4
_cell_length_a                   9.350(3)
_cell_length_b                   13.145(3)
_cell_length_c                   12.739(4)
_cell_measurement_reflns_used    0
_cell_measurement_temperature    0
_cell_measurement_theta_max      0
_cell_measurement_theta_min      0
_cell_volume                     1512.1(8)
_computing_cell_refinement
;
DIP2000 software 'DENZO' (Otwinowski & Minor, 1996)
;
_computing_data_collection       'DIP2000 software Xpress (MAC Science, 1989)'
_computing_data_reduction
;
DIP2000 software 'DENZO' (Otwinowski & Minor, 1996)
;
_computing_molecular_graphics
;
 CAMERON (Watkin, Prout & Pearce,  1996)
;
_computing_publication_material
;
CRYSTALS Issue 10 (Watkin, Prout, Carruthers & Betteridge, 1996)
;
_computing_structure_refinement
;
CRYSTALS Issue 10 (Watkin, Prout, Carruthers & Betteridge, 1996)
;
_computing_structure_solution    'SIR92 (Giacovazzo et al, 1992)'
_diffrn_ambient_temperature      125
_diffrn_measurement_device_type  '  Enraf-nonius DIP2000 '
_diffrn_measurement_method       \w/2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
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_diffrn_reflns_limit_h_min       -11
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_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            3097
_diffrn_reflns_theta_max         0.00
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_diffrn_standards_decay_%        0.00
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
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_exptl_absorpt_coefficient_mu    7.79
_exptl_absorpt_correction_T_max  1.00
_exptl_absorpt_correction_T_min  0.93
_exptl_absorpt_correction_type   refdelf
_exptl_absorpt_process_details   'refined from delta-F (Walker & Stuart , 1983)'
_exptl_crystal_colour            ' none '
_exptl_crystal_density_diffrn    1.87
_exptl_crystal_density_meas      ?
_exptl_crystal_description       ' box '
_exptl_crystal_F_000             826.67
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.35
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_refine_diff_density_max         0.93
_refine_diff_density_min         -0.59
_refine_ls_extinction_coef       97.1(43)
_refine_ls_extinction_method     'Larson 1970 Crystallographic Computing eq 22'
_refine_ls_goodness_of_fit_obs   0.8041
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     173
_refine_ls_number_reflns         2860
_refine_ls_R_factor_obs          0.0198
_refine_ls_shift/su_max          0.033162
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details
;
 Chebychev polynomial with   3 parameters (Carruthers & Watkin, 1979)
 2.32 0.530 1.82
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_obs         0.0263
_reflns_limit_h_max              11
_reflns_limit_h_min              -11
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_reflns_limit_k_min              0
_reflns_limit_l_max              15
_reflns_limit_l_min              0
_reflns_number_observed          2860
_reflns_number_total             3097
_reflns_observed_criterion       >3.00\s(I)
_cod_data_source_file            f803076sup1.cif
_cod_data_source_block           CRYSTALS2_cif
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value 'not measured' was changed to '?' -
the value is undefined or not given.

'_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 1891 2012-01-12 08:04:46Z andrius 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 

The following automatic conversions were performed:

data name '_diffrn_measurement_device-type' was replaced with
'_diffrn_measurement_device_type' as specified in the replacement
file 'data/replacement-values/replacement_tags.lst'.

Automatic conversion script
Id: cif_correct_tags 9268 2022-04-12 08:56:07Z antanas 
;
_cod_original_cell_volume        1512.0
_cod_original_sg_symbol_H-M      'P 1 21/c 1 '
_cod_original_formula_sum        ' C18 H26 W1 '
_cod_database_code               7028095
_publ_section_figure_synopsis
;
?
;