Tricarbonylchromium complexes of four methyl 4,6-<i>O</i>-[(η^6^-phenyl)alkylidene]-α-<small>D</small>-glucopyranosides
Rickard, Clifton E. F.; Singh, Yogendra; Woodgate, Paul D.; Zhao, Zhongde; Acta Crystallographica Section C 55 (1999) 1475–1479; doi:10.1107/S0108270199007313

data_2008982
_publ_section_title
;
 Tricarbonylchromium complexes of four methyl
 4,6-<i>O</i>-[(\h^6^-phenyl)alkylidene]-\a-<small>D</small>-glucopyranosides
;
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              1475
_journal_page_last               1479
_journal_paper_doi               10.1107/S0108270199007313
_journal_volume                  55
_journal_year                    1999
_chemical_formula_iupac          '[Cr (C19 H30 O6 Si) (C O)3]'
_chemical_formula_sum            'C22 H30 Cr O9 Si'
_chemical_formula_weight         518.55
_chemical_name_systematic
;
Tricarbonyl{(R)-methyl 2,3-di-O-methyl-4,6-O-[(1S,3R)-(\h^6^-3-trimethylsilyl
phenyl)methylene]-\a-D-glucopyranoside}chromium(0).
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_audit_creation_method           SHELXL97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.7051(2)
_cell_length_b                   14.8671(3)
_cell_length_c                   22.2079(5)
_cell_measurement_reflns_used    8192
_cell_measurement_temperature    203(2)
_cell_measurement_theta_max      26
_cell_measurement_theta_min      2
_cell_volume                     2543.97(10)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Siemens, 1994a)'
_computing_data_reduction        'SAINT (Siemens, 1994a)'
_computing_molecular_graphics    'SHELXTL (Siemens, 1994b)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      203(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Siemens SMART CCD area-detector'
_diffrn_measurement_method       '\w 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  0.042
_diffrn_reflns_av_sigmaI/netI    0.052
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            14997
_diffrn_reflns_theta_full        26.40
_diffrn_reflns_theta_max         26.4
_diffrn_reflns_theta_min         1.65
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.543
_exptl_absorpt_correction_T_max  0.958
_exptl_absorpt_correction_T_min  0.751
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(Blessing, 1995)'
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.354
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Needle
_exptl_crystal_F_000             1088
_exptl_crystal_size_max          0.56
_exptl_crystal_size_mid          0.09
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.241
_refine_diff_density_min         -0.279
_refine_ls_abs_structure_details 'Flack (1983)'
_refine_ls_abs_structure_Flack   -0.02(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.095
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     304
_refine_ls_number_reflns         5137
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.095
_refine_ls_R_factor_all          0.063
_refine_ls_R_factor_gt           0.044
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0238P)^2^+1.4132P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.091
_reflns_number_gt                4223
_reflns_number_total             5137
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ta1240.cif
_cod_data_source_block           1
_cod_depositor_comments
;
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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc w =
1/[\s^2^(Fo^2^)+(0.0238P)^2^+1.4132P] 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^)+(0.0238P)^2^+1.4132P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_database_code               2008982