The influence of the boat-to-chair conversion on the demetallation of the nickel(II) complex of an open-chain tetramine containing a piperazine fragment.
Boiocchi, Massimo; Bonizzoni, Marco; Fabbrizzi, Luigi; Foti, Francesco; Licchelli, Maurizio; Taglietti, Angelo; Zema, Michele; Dalton transactions (Cambridge, England : 2003)  (2004) 653–658; doi:10.1039/b312980b

data_7013714
_publ_section_title
;
 The influence of the boat-to-chair conversion on the demetallation of
 the nickel(II) complex of an open-chain tetramine containing a
 piperazine fragment.
;
_journal_issue                   4
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              653
_journal_page_last               658
_journal_paper_doi               10.1039/b312980b
_journal_year                    2004
_chemical_formula_moiety         'C10 H25 N4, Cl O4'
_chemical_formula_sum            'C10 H25 Cl N4 O4'
_chemical_formula_weight         300.79
_chemical_name_systematic
;
3-(4-butylpiperazin-1-yl)-propylammonium-perchlorate
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_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
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 104.3610(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.1268(4)
_cell_length_b                   12.7796(6)
_cell_length_c                   14.7831(7)
_cell_measurement_reflns_used    6004
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      13.5
_cell_measurement_theta_min      1.3
_cell_volume                     1487.36(12)
_computing_cell_refinement       'SAINT (Bruker-Axs Inc.)'
_computing_data_collection       'SMART (Bruker-Axs Inc.)'
_computing_data_reduction        'SAINT (Bruker-axs Inc.)'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR-97 (Altomare et al., 1999)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 8.333
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker-Axs Smart-Apex CCD'
_diffrn_measurement_method       'omega scan'
_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  0.0257
_diffrn_reflns_av_sigmaI/netI    0.0221
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            22623
_diffrn_reflns_theta_full        30.00
_diffrn_reflns_theta_max         30.00
_diffrn_reflns_theta_min         2.14
_exptl_absorpt_coefficient_mu    0.274
_exptl_absorpt_correction_T_max  0.947
_exptl_absorpt_correction_T_min  0.898
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sadabs (Sheldrick, 1996)'
_exptl_crystal_colour            'light red'
_exptl_crystal_density_diffrn    1.343
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             648
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.339
_refine_diff_density_min         -0.186
_refine_diff_density_rms         0.053
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     272
_refine_ls_number_reflns         4341
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.0542
_refine_ls_R_factor_gt           0.0437
_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^)+(0.0799P)^2^+0.1393P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1223
_refine_ls_wR_factor_ref         0.1314
_reflns_number_gt                3467
_reflns_number_total             4341
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b312980b.txt
_cod_data_source_block           LHCLO4
_cod_database_code               7013714