Can Sn(OCH2CH2NMe2)2 behave as a stannylene? Equatorial-axial isomerism in the tin(II)-iron(0) complex (Me2NCH2CH2O)2Sn-Fe(CO)4.
Khrustalev, Victor N.; Portnyagin, Ivan A.; Nechaev, Mikhail S.; Bukalov, Sergey S.; Leites, Larissa A.; Dalton transactions (Cambridge, England : 2003)  (2007) 3489–3492; doi:10.1039/b708513c

data_7006051
_publ_section_title
;
 Can Sn(OCH2CH2NMe2)2 behave as a stannylene? Equatorial-axial
 isomerism in the tin(II)-iron(0) complex (Me2NCH2CH2O)2Sn-Fe(CO)4.
;
_journal_issue                   32
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              3489
_journal_page_last               3492
_journal_paper_doi               10.1039/b708513c
_journal_year                    2007
_chemical_formula_moiety         'C12 H20 Fe N2 O6 Sn'
_chemical_formula_sum            'C12 H20 Fe N2 O6 Sn'
_chemical_formula_weight         462.84
_chemical_name_systematic
;
?
;
_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                 98.393(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   16.5051(14)
_cell_length_b                   9.7283(8)
_cell_length_c                   21.4561(19)
_cell_measurement_reflns_used    1688
_cell_measurement_temperature    100.0(2)
_cell_measurement_theta_max      29.88
_cell_measurement_theta_min      2.49
_cell_volume                     3408.2(5)
_computing_cell_refinement       'SAINTPlus, v. 6.2 (Bruker, 2001)'
_computing_data_collection       'APEX2 (Bruker, 2005)'
_computing_data_reduction        'SAINTPlus, v. 6.2 (Bruker, 2001)'
_computing_molecular_graphics    'SHELXTL, v. 6.12 (Sheldrick, 2001)'
_computing_publication_material  'SHELXTL, v. 6.12 (Sheldrick, 2001)'
_computing_structure_refinement  'SHELXTL, v. 6.12 (Sheldrick, 2001)'
_computing_structure_solution    'SHELXTL, v. 6.12 (Sheldrick, 2001)'
_diffrn_ambient_temperature      100.0(2)
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'Bruker SMART APEX II 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  0.0461
_diffrn_reflns_av_sigmaI/netI    0.0418
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            19034
_diffrn_reflns_theta_full        29.98
_diffrn_reflns_theta_max         29.98
_diffrn_reflns_theta_min         1.92
_exptl_absorpt_coefficient_mu    2.344
_exptl_absorpt_correction_T_max  0.759
_exptl_absorpt_correction_T_min  0.603
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2003)'
_exptl_crystal_colour            'light yellow'
_exptl_crystal_density_diffrn    1.804
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    .
_exptl_crystal_description       prism
_exptl_crystal_F_000             1840
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.12
_refine_diff_density_max         1.041
_refine_diff_density_min         -0.758
_refine_diff_density_rms         0.111
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.002
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     203
_refine_ls_number_reflns         4920
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.002
_refine_ls_R_factor_all          0.0443
_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^)+(0.0236P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0529
_refine_ls_wR_factor_ref         0.0570
_reflns_number_gt                3900
_reflns_number_total             4920
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b708513c.txt
_cod_data_source_block           (RO)2Sn(ax)-Fe(CO)4
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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 
;
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               7006051