How big is a Cp? Novel cycloheptatrienyl zirconium complexes with tri-, tetra- and pentasubstituted cyclopentadienyl ligands.
Bauer, Heiko; Glöckner, Andreas; Tagne Kuate, Alain C.; Schäfer, Sebastian; Sun, Yu; Freytag, Matthias; Tamm, Matthias; Walter, Marc D.; Sitzmann, Helmut; Dalton transactions (Cambridge, England : 2003) 43 (2014) 15818–15828; doi:10.1039/c4dt01581a

data_7032577
_publ_section_title
;
 How big is a Cp? Novel cycloheptatrienyl zirconium complexes with tri-,
 tetra- and pentasubstituted cyclopentadienyl ligands.
;
_journal_issue                   42
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              15818
_journal_page_last               15828
_journal_paper_doi               10.1039/c4dt01581a
_journal_volume                  43
_journal_year                    2014
_chemical_formula_sum            'C23 H36 Si Zr'
_chemical_formula_weight         431.83
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           64
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-C 2ac 2'
_symmetry_space_group_name_H-M   'C m c a'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   14.3913(2)
_cell_length_b                   14.1131(2)
_cell_length_c                   21.5608(3)
_cell_measurement_reflns_used    11050
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      62.5848
_cell_measurement_theta_min      3.0682
_cell_volume                     4379.12(11)
_computing_cell_refinement       'CrysAlis RED, Oxford Diffraction Ltd.'
_computing_data_collection       'CrysAlis CCD, Oxford Diffraction Ltd.'
_computing_data_reduction        'CrysAlis RED, Oxford Diffraction Ltd.'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SIR97 (Giacovazzo et al., 1999)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 16.1399
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Xcalibur, Sapphire3, Gemini ultra'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_source         'Enhance Ultra (Cu) X-ray Source'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0335
_diffrn_reflns_av_sigmaI/netI    0.0134
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            14566
_diffrn_reflns_theta_full        62.68
_diffrn_reflns_theta_max         62.68
_diffrn_reflns_theta_min         4.10
_exptl_absorpt_coefficient_mu    4.633
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.26508
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.66 (release 28-04-2010 CrysAlis171 .NET)
(compiled Apr 28 2010,14:27:37)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            violet
_exptl_crystal_density_diffrn    1.310
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'transparent plate'
_exptl_crystal_F_000             1824
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.894
_refine_diff_density_min         -0.393
_refine_diff_density_rms         0.068
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.145
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     130
_refine_ls_number_reflns         1838
_refine_ls_number_restraints     8
_refine_ls_restrained_S_all      1.142
_refine_ls_R_factor_all          0.0300
_refine_ls_R_factor_gt           0.0290
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0510P)^2^+4.0190P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0794
_refine_ls_wR_factor_ref         0.0800
_reflns_number_gt                1758
_reflns_number_total             1838
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c4dt01581a2.cif
_cod_data_source_block           12129o
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/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 

 Adding full bibliography for 7032574--7032578.cif.
;
_cod_original_cell_volume        4379.13(11)
_cod_database_code               7032577