Synthesis and characterisation of cyclopentadienyl complexes of barium: precursors for atomic layer deposition of BaTiO3.
Hatanpää, Timo; Vehkamäki, Marko; Mutikainen, Ilpo; Kansikas, Jarno; Ritala, Mikko; Leskelä, Markku; Dalton transactions (Cambridge, England : 2003)  (2004) 1181–1188; doi:10.1039/b400235k

data_7014039
_publ_section_title
;
 Synthesis and characterisation of cyclopentadienyl complexes of
 barium: precursors for atomic layer deposition of BaTiO3.
;
_journal_issue                   8
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1181
_journal_page_last               1188
_journal_paper_doi               10.1039/b400235k
_journal_year                    2004
_chemical_formula_moiety         'C28 H48 Ba O4'
_chemical_formula_sum            'C28 H48 Ba O4'
_chemical_formula_weight         586.00
_chemical_name_systematic
;
Bis(1,2,3,4,5-pentamethylcyclopentadienyl)barium(II)triglyme
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b 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                90.000
_cell_angle_beta                 90.000
_cell_angle_gamma                90.000
_cell_formula_units_Z            8
_cell_length_a                   16.620(5)
_cell_length_b                   21.738(5)
_cell_length_c                   16.243(5)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      7.0
_cell_measurement_theta_min      3.0
_cell_volume                     5868(3)
_computing_cell_refinement       'TEXSAN (1993)'
_computing_data_collection       'AFC7S software (1993)'
_computing_data_reduction        'TEXSAN (1993)'
_computing_molecular_graphics    'SHELXTL-PC v. 5.03 (Sheldrick, 1994)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      193(2)
_diffrn_measured_fraction_theta_full 0.855
_diffrn_measured_fraction_theta_max 0.855
_diffrn_measurement_device_type  'Rigaku AFC-7S'
_diffrn_measurement_method       \w/2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0450
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            5187
_diffrn_reflns_theta_full        26.48
_diffrn_reflns_theta_max         26.48
_diffrn_reflns_theta_min         2.51
_diffrn_standards_decay_%        <2
_diffrn_standards_interval_count 200
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    1.381
_exptl_absorpt_correction_T_max  0.500
_exptl_absorpt_correction_T_min  0.470
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details
'North etal. (1968). Acta Cryst. A24, 351-359'
_exptl_crystal_colour            prismatic
_exptl_crystal_density_diffrn    1.327
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       colorless
_exptl_crystal_F_000             2432
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.50
_exptl_crystal_size_min          0.50
_refine_diff_density_max         1.978
_refine_diff_density_min         -3.503
_refine_diff_density_rms         0.165
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.040
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     310
_refine_ls_number_reflns         5187
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.0830
_refine_ls_R_factor_gt           0.0689
_refine_ls_shift/su_max          0.014
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1284P)^2^+6.7236P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1821
_refine_ls_wR_factor_ref         0.1934
_reflns_number_gt                4142
_reflns_number_total             5187
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b400235k.txt
_cod_data_source_block           5
_cod_database_code               7014039