A stable alkyl hydride of a first row transition metal
MacAdams, Leonard A.; Buffone, Gerald P.; Incarvito, Christopher D.; Golen, James A.; Rheingold, Arnold L.; Theopold, Klaus H.; Chemical Communications (Cambridge, United Kingdom)  (2003) 1164–1165; doi:10.1039/b301943h

data_7113624
_publ_section_title
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 A stable alkyl hydride of a first row transition metal
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_journal_coden_ASTM              CHCOFS
_journal_issue                   10
_journal_name_full
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 Chemical Communications (Cambridge, United Kingdom)
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_journal_page_first              1164
_journal_page_last               1165
_journal_paper_doi               10.1039/b301943h
_journal_year                    2003
_chemical_formula_sum            'C42 H52 Cr2 N4'
_chemical_formula_weight         716.88
_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                 92.4850(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   23.4971(13)
_cell_length_b                   10.7216(6)
_cell_length_c                   15.0645(9)
_cell_measurement_reflns_used    6307
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      28.28
_cell_measurement_theta_min      2.47
_cell_volume                     3791.6(4)
_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      150(2)
_diffrn_measured_fraction_theta_full 0.940
_diffrn_measured_fraction_theta_max 0.940
_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  0.0386
_diffrn_reflns_av_sigmaI/netI    0.0505
_diffrn_reflns_limit_h_max       31
_diffrn_reflns_limit_h_min       -31
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            11853
_diffrn_reflns_theta_full        28.28
_diffrn_reflns_theta_max         28.28
_diffrn_reflns_theta_min         2.09
_exptl_absorpt_coefficient_mu    0.607
_exptl_absorpt_correction_T_max  0.9145
_exptl_absorpt_correction_T_min  0.8882
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            red-brown
_exptl_crystal_density_diffrn    1.256
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1520
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.614
_refine_diff_density_min         -0.510
_refine_diff_density_rms         0.075
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     221
_refine_ls_number_reflns         4432
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0592
_refine_ls_R_factor_gt           0.0471
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0833P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1358
_refine_ls_wR_factor_ref         0.1426
_reflns_number_gt                3457
_reflns_number_total             4432
_reflns_threshold_expression     >2sigma(I)
_cod_duplicate_entry             7103661
_cod_data_source_file            b301943h.txt
_cod_data_source_block           jpb13
_cod_depositor_comments
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The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/retrospective/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7113624