Supplementary Material (ESI) for Dalton Transactions
This journal is (c) The Royal Society of Chemistry 2008

data_global

_journal_coden_Cambridge         222

loop_
_publ_author_name
'Dominic S. Wright'
'Dana Eisler'
'Robert J. Less'
'Vesal Naseri'
'J. Rawson'

_publ_contact_author_name        'Dominic S. Wright'
_publ_contact_author_address     
;
Department of Chemistry
University of Cambridge
Lensfield Road
Cambridge
CB2 1EW
UNITED KINGDOM
;

_publ_contact_author_email       DSW1000@CAM.AC.UK

_publ_requested_journal          'Dalton Transactions'

_publ_section_title              
;
The 6pi, phosphide-stabilised stannylene dianion
[C6H4P2Sn]2- ; the first member of a new class of Arduengo-type carbene
analogues
;

data_1
_database_code_depnum_ccdc_archive 'CCDC 674806'

_audit_creation_method           SHELXL-97
_chemical_name_systematic        
;
?
;
_chemical_name_common            ?
_chemical_melting_point          ?
_chemical_formula_moiety         'C18 H36 Li2 N4 P2 Sn'
_chemical_formula_sum            'C18 H36 Li2 N4 P2 Sn'
_chemical_formula_weight         503.02

loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
C C 0.0033 0.0016 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
H H 0.0000 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Li Li -0.0003 0.0001 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
N N 0.0061 0.0033 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
P P 0.1023 0.0942 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Sn Sn -0.6537 1.4246 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'

_symmetry_cell_setting           Monoclinic
_symmetry_space_group_name_H-M   'P 21/n'
_symmetry_space_group_name_Hall  '-P 2yn'

loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x+1/2, y+1/2, -z+1/2'
'-x, -y, -z'
'x-1/2, -y-1/2, z-1/2'

_cell_length_a                   8.6104(2)
_cell_length_b                   14.8211(3)
_cell_length_c                   19.5316(4)
_cell_angle_alpha                90.00
_cell_angle_beta                 93.1437(8)
_cell_angle_gamma                90.00
_cell_volume                     2488.79(9)
_cell_formula_units_Z            4
_cell_measurement_temperature    180(2)
_cell_measurement_reflns_used    24702
_cell_measurement_theta_min      1.00
_cell_measurement_theta_max      27.48

_exptl_crystal_description       block
_exptl_crystal_colour            red
_exptl_crystal_size_max          0.37
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.14
_exptl_crystal_density_meas      ?
_exptl_crystal_density_diffrn    1.342
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1032
_exptl_absorpt_coefficient_mu    1.164
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_correction_T_min  0.677
_exptl_absorpt_correction_T_max  0.850
_exptl_absorpt_process_details   
;
multi-scan from symmetry-related measurements
Sortav (Blessing 1995)
;

_publ_section_exptl_refinement   
;
The crystals of the complex form as non-merohedral twins.
Application of the twin determination program ROTAX
(Parsons 2002) determined that twinning occurred around
the [100] direct lattice axis. The program WinGX (Farrugia 1999)
was used to prepare an HKLF5 file for further refinement. The R
values, K value, esds and background noise were all substantially
improved, indicating the correct twin assignment. One of the
coordinated molecules of TMEDA was disordered, and was modeled
as an isotropic 50:50 mixture with geometric restraints.
;

_diffrn_ambient_temperature      180(2)
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_type           MoK\a
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_monochromator  graphite
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_diffrn_measurement_method       'phi\omega scans'
_diffrn_reflns_number            28089
_diffrn_reflns_av_R_equivalents  0.107
_diffrn_reflns_av_sigmaI/netI    0.069
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_theta_min         2.94
_diffrn_reflns_theta_max         25.03
_reflns_number_total             11383
_reflns_number_gt                9301
_reflns_threshold_expression     >2sigma(I)

_computing_data_collection       'Collect (Nonius B.V. 1998)'
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_reduction        
;
HKL Denzo and Scalepack (Otwinowski & Minor 1997)
;
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick 1997)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'SHELXL-97 (Sheldrick 1997)'

_refine_special_details          
;
Refinement of F^2^ against ALL reflections. The weighted R-factor wR and
goodness of fit S are based on F^2^, conventional R-factors R are based
on F, with F set to zero for negative F^2^. The threshold expression of
F^2^ > 2sigma(F^2^) is used only for calculating R-factors(gt) etc. and is
not relevant to the choice of reflections for refinement. R-factors based
on F^2^ are statistically about twice as large as those based on F, and R-
factors based on ALL data will be even larger.
;

_refine_ls_structure_factor_coef Fsqd
_refine_ls_matrix_type           full
_refine_ls_weighting_scheme      calc
_refine_ls_weighting_details     
'calc w=1/[\s^2^(Fo^2^)+(0.0370P)^2^+5.6717P] where P=(Fo^2^+2Fc^2^)/3'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_atom_sites_solution_hydrogens   geom
_refine_ls_hydrogen_treatment    constr
_refine_ls_extinction_method     none
_refine_ls_extinction_coef       ?
_refine_ls_number_reflns         11383
_refine_ls_number_parameters     234
_refine_ls_number_restraints     22
_refine_ls_R_factor_all          0.0638
_refine_ls_R_factor_gt           0.0483
_refine_ls_wR_factor_ref         0.1156
_refine_ls_wR_factor_gt          0.1083
_refine_ls_goodness_of_fit_ref   1.037
_refine_ls_restrained_S_all      1.042
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000

loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_occupancy
_atom_site_symmetry_multiplicity
_atom_site_calc_flag
_atom_site_refinement_flags
_atom_site_disorder_assembly
_atom_site_disorder_group
Sn1 Sn 1.25997(6) 1.11465(2) 0.828449(17) 0.03755(12) Uani 1 1 d . A .
P1 P 1.26398(14) 1.15060(6) 0.70497(6) 0.0333(3) Uani 1 1 d . A .
P2 P 1.27284(14) 0.95410(6) 0.79696(5) 0.0351(3) Uani 1 1 d . . .
C1 C 1.2928(5) 1.0402(3) 0.66627(19) 0.0309(9) Uani 1 1 d . A .
C2 C 1.3182(5) 1.0325(2) 0.59635(19) 0.0352(10) Uani 1 1 d . . .
H2A H 1.3152 1.0858 0.5693 0.042 Uiso 1 1 calc R . .
C3 C 1.3469(7) 0.9529(3) 0.5651(3) 0.0397(12) Uani 1 1 d . . .
H3A H 1.3625 0.9514 0.5173 0.048 Uiso 1 1 calc R . .
C4 C 1.3536(5) 0.8726(2) 0.6034(2) 0.0412(10) Uani 1 1 d . . .
H4A H 1.3750 0.8165 0.5823 0.049 Uiso 1 1 calc R . .
C5 C 1.3285(6) 0.8772(3) 0.6717(3) 0.0355(12) Uani 1 1 d . . .
H5A H 1.3305 0.8225 0.6972 0.043 Uiso 1 1 calc R . .
C6 C 1.2999(6) 0.9574(2) 0.7066(2) 0.0344(12) Uani 1 1 d . A .
Li1 Li 1.0329(7) 1.0286(4) 0.7224(3) 0.0380(15) Uiso 1 1 d D . .
N1 N 0.8182(9) 1.0756(5) 0.7578(4) 0.041(3) Uiso 0.50 1 d PD A 1
N2 N 0.8905(10) 0.9567(5) 0.6535(4) 0.037(3) Uiso 0.50 1 d PD A 1
C7 C 0.793(2) 1.1731(7) 0.7429(9) 0.081(3) Uiso 0.50 1 d PD A 1
H7A H 0.6812 1.1859 0.7396 0.121 Uiso 0.50 1 calc PR A 1
H7B H 0.8382 1.1883 0.6994 0.121 Uiso 0.50 1 calc PR A 1
H7C H 0.8430 1.2092 0.7799 0.121 Uiso 0.50 1 calc PR A 1
C8 C 0.7793(15) 1.0451(8) 0.8247(5) 0.068(3) Uiso 0.50 1 d PD A 1
H8A H 0.6864 1.0770 0.8386 0.102 Uiso 0.50 1 calc PR A 1
H8B H 0.8663 1.0575 0.8578 0.102 Uiso 0.50 1 calc PR A 1
H8C H 0.7589 0.9801 0.8233 0.102 Uiso 0.50 1 calc PR A 1
C9 C 0.6900(10) 1.0266(7) 0.7253(5) 0.059(2) Uiso 0.50 1 d PD A 1
H9A H 0.6007 1.0680 0.7167 0.070 Uiso 0.50 1 calc PR A 1
H9B H 0.6573 0.9783 0.7564 0.070 Uiso 0.50 1 calc PR A 1
C10 C 0.7322(12) 0.9873(10) 0.6614(5) 0.068(3) Uiso 0.50 1 d PD A 1
H10A H 0.7077 1.0323 0.6249 0.081 Uiso 0.50 1 calc PR A 1
H10B H 0.6626 0.9351 0.6520 0.081 Uiso 0.50 1 calc PR A 1
C11 C 0.8937(19) 0.8607(7) 0.6786(8) 0.050(4) Uiso 0.50 1 d PD A 1
H11A H 0.8243 0.8238 0.6486 0.076 Uiso 0.50 1 calc PR A 1
H11B H 0.8588 0.8587 0.7255 0.076 Uiso 0.50 1 calc PR A 1
H11C H 1.0000 0.8372 0.6780 0.076 Uiso 0.50 1 calc PR A 1
C12 C 0.930(2) 0.9575(11) 0.5804(6) 0.052(2) Uiso 0.50 1 d PD A 1
H12A H 0.8549 0.9209 0.5533 0.079 Uiso 0.50 1 calc PR A 1
H12B H 1.0349 0.9324 0.5765 0.079 Uiso 0.50 1 calc PR A 1
H12C H 0.9278 1.0196 0.5632 0.079 Uiso 0.50 1 calc PR A 1
N1A N 0.8235(9) 1.0955(6) 0.7504(4) 0.040(3) Uiso 0.50 1 d PD A 2
N2A N 0.8934(10) 0.9370(6) 0.6630(4) 0.036(3) Uiso 0.50 1 d PD A 2
C7A C 0.8344(19) 1.1943(6) 0.7428(8) 0.081(3) Uiso 0.50 1 d PD A 2
H7D H 0.7410 1.2225 0.7597 0.121 Uiso 0.50 1 calc PR A 2
H7E H 0.8429 1.2094 0.6944 0.121 Uiso 0.50 1 calc PR A 2
H7F H 0.9265 1.2164 0.7694 0.121 Uiso 0.50 1 calc PR A 2
C8A C 0.790(3) 1.0935(14) 0.8256(6) 0.068(3) Uiso 0.50 1 d PD A 2
H8D H 0.6833 1.1135 0.8312 0.102 Uiso 0.50 1 calc PR A 2
H8E H 0.8626 1.1339 0.8511 0.102 Uiso 0.50 1 calc PR A 2
H8F H 0.8034 1.0319 0.8431 0.102 Uiso 0.50 1 calc PR A 2
C9A C 0.7153(14) 1.0563(6) 0.6965(6) 0.059(2) Uiso 0.50 1 d PD A 2
H9C H 0.7319 1.0861 0.6521 0.070 Uiso 0.50 1 calc PR A 2
H9D H 0.6067 1.0680 0.7083 0.070 Uiso 0.50 1 calc PR A 2
C10A C 0.7401(13) 0.9540(7) 0.6893(8) 0.068(3) Uiso 0.50 1 d PD A 2
H10C H 0.7329 0.9245 0.7345 0.081 Uiso 0.50 1 calc PR A 2
H10D H 0.6582 0.9284 0.6575 0.081 Uiso 0.50 1 calc PR A 2
C11A C 0.9488(13) 0.8427(6) 0.6638(5) 0.048(3) Uiso 0.50 1 d PD A 2
H11D H 0.8688 0.8038 0.6417 0.072 Uiso 0.50 1 calc PR A 2
H11E H 0.9701 0.8232 0.7114 0.072 Uiso 0.50 1 calc PR A 2
H11F H 1.0443 0.8386 0.6389 0.072 Uiso 0.50 1 calc PR A 2
C12A C 0.902(3) 0.9678(11) 0.5897(5) 0.052(2) Uiso 0.50 1 d PD A 2
H12D H 0.8409 0.9267 0.5594 0.079 Uiso 0.50 1 calc PR A 2
H12E H 1.0104 0.9677 0.5771 0.079 Uiso 0.50 1 calc PR A 2
H12F H 0.8594 1.0290 0.5849 0.079 Uiso 0.50 1 calc PR A 2
Li2 Li 1.2406(8) 1.3031(4) 0.6376(3) 0.0321(13) Uiso 1 1 d . . .
N3 N 1.4062(5) 1.3149(3) 0.56149(17) 0.0405(10) Uani 1 1 d . A .
N4 N 1.0670(5) 1.3126(3) 0.55249(18) 0.0426(11) Uani 1 1 d . A .
C13 C 1.4674(15) 1.4088(7) 0.5585(7) 0.090(4) Uani 1 1 d . . .
H13A H 1.5409 1.4132 0.5221 0.135 Uiso 1 1 calc R A .
H13B H 1.5207 1.4243 0.6026 0.135 Uiso 1 1 calc R . .
H13C H 1.3810 1.4508 0.5489 0.135 Uiso 1 1 calc R . .
C14 C 1.5404(7) 1.2545(4) 0.5711(3) 0.0569(15) Uani 1 1 d . . .
H14A H 1.6011 1.2560 0.5301 0.085 Uiso 1 1 calc R A .
H14B H 1.5040 1.1928 0.5786 0.085 Uiso 1 1 calc R . .
H14C H 1.6056 1.2742 0.6110 0.085 Uiso 1 1 calc R . .
C15 C 1.3140(6) 1.2881(3) 0.4985(2) 0.0603(13) Uani 1 1 d . . .
H15A H 1.2982 1.2219 0.4985 0.072 Uiso 1 1 calc R A .
H15B H 1.3722 1.3038 0.4578 0.072 Uiso 1 1 calc R . .
C16 C 1.1594(6) 1.3345(3) 0.4940(2) 0.0596(13) Uani 1 1 d . A .
H16A H 1.1757 1.4006 0.4923 0.072 Uiso 1 1 calc R . .
H16B H 1.1014 1.3162 0.4511 0.072 Uiso 1 1 calc R . .
C17 C 0.9467(9) 1.3803(5) 0.5592(4) 0.046(2) Uani 1 1 d . . .
H17A H 0.8763 1.3799 0.5181 0.068 Uiso 1 1 calc R A .
H17B H 0.9949 1.4400 0.5647 0.068 Uiso 1 1 calc R . .
H17C H 0.8878 1.3667 0.5995 0.068 Uiso 1 1 calc R . .
C18 C 0.9906(7) 1.2242(4) 0.5413(3) 0.0593(17) Uani 1 1 d . . .
H18A H 0.9234 1.2263 0.4992 0.089 Uiso 1 1 calc R A .
H18B H 0.9278 1.2102 0.5803 0.089 Uiso 1 1 calc R . .
H18C H 1.0699 1.1774 0.5370 0.089 Uiso 1 1 calc R . .

loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_23
_atom_site_aniso_U_13
_atom_site_aniso_U_12
Sn1 0.0535(3) 0.02679(17) 0.03150(16) -0.00226(12) -0.00544(14) -0.00040(17)
P1 0.0442(8) 0.0220(5) 0.0334(6) 0.0038(4) -0.0002(5) 0.0020(5)
P2 0.0489(8) 0.0243(5) 0.0317(5) 0.0031(4) -0.0002(5) 0.0021(5)
C1 0.039(3) 0.0260(19) 0.028(2) 0.0027(15) 0.0068(19) -0.003(2)
C2 0.035(3) 0.034(2) 0.036(2) 0.0085(16) -0.0023(19) -0.0024(19)
C3 0.034(4) 0.048(3) 0.039(3) -0.001(2) 0.010(2) 0.000(2)
C4 0.042(3) 0.038(2) 0.044(3) -0.0076(17) 0.0068(19) 0.0042(19)
C5 0.037(4) 0.023(2) 0.046(3) 0.0060(19) -0.002(2) 0.005(2)
C6 0.040(3) 0.0228(19) 0.041(3) 0.0066(16) 0.006(2) 0.006(2)
N3 0.045(4) 0.035(2) 0.041(2) 0.0030(17) 0.0057(17) 0.001(2)
N4 0.048(4) 0.043(2) 0.036(2) -0.0008(17) -0.0027(18) 0.005(2)
C13 0.106(7) 0.026(4) 0.144(8) -0.001(4) 0.057(6) -0.019(4)
C14 0.044(4) 0.057(4) 0.070(5) 0.001(3) 0.010(3) 0.013(3)
C15 0.069(4) 0.078(3) 0.034(3) 0.001(2) 0.007(2) 0.007(3)
C16 0.058(4) 0.082(3) 0.040(3) 0.014(2) 0.004(2) 0.013(3)
C17 0.037(4) 0.048(7) 0.051(4) -0.018(4) -0.013(3) 0.016(4)
C18 0.055(4) 0.063(4) 0.059(4) -0.018(3) -0.005(3) -0.009(3)

_geom_special_details            
;
All esds (except the esd in the dihedral angle between two l.s. planes)
are estimated using the full covariance matrix. The cell esds are taken
into account individually in the estimation of esds in distances, angles
and torsion angles; correlations between esds in cell parameters are only
used when they are defined by crystal symmetry. An approximate (isotropic)
treatment of cell esds is used for estimating esds involving l.s. planes.
;

loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_site_symmetry_2
_geom_bond_publ_flag
Sn1 P2 2.4617(10) . ?
Sn1 P1 2.4721(12) . ?
Sn1 Li1 3.049(6) . ?
P1 C1 1.825(4) . ?
P1 Li2 2.617(5) . ?
P1 Li1 2.724(6) . ?
P2 C6 1.793(4) . ?
P2 Li2 2.583(6) 2_746 ?
P2 Li1 2.698(6) . ?
C1 C2 1.400(6) . ?
C1 C6 1.458(5) . ?
C1 Li1 2.551(8) . ?
C2 C3 1.358(7) . ?
C3 C4 1.405(6) . ?
C4 C5 1.365(6) . ?
C5 C6 1.399(6) . ?
C6 Li1 2.563(8) . ?
Li1 N2 2.066(9) . ?
Li1 N2A 2.116(10) . ?
Li1 N1 2.127(10) . ?
Li1 N1A 2.154(10) . ?
N1 C9 1.439(8) . ?
N1 C8 1.440(8) . ?
N1 C7 1.487(8) . ?
N2 C10 1.453(8) . ?
N2 C12 1.487(9) . ?
N2 C11 1.504(8) . ?
C9 C10 1.443(8) . ?
N1A C7A 1.475(8) . ?
N1A C9A 1.485(8) . ?
N1A C8A 1.511(9) . ?
N2A C10A 1.464(9) . ?
N2A C11A 1.476(8) . ?
N2A C12A 1.509(8) . ?
C9A C10A 1.539(9) . ?
Li2 N3 2.123(8) . ?
Li2 N4 2.178(7) . ?
Li2 P2 2.583(6) 2_756 ?
N3 C14 1.465(7) . ?
N3 C15 1.482(5) . ?
N3 C13 1.491(9) . ?
N4 C17 1.454(9) . ?
N4 C16 1.464(6) . ?
N4 C18 1.477(6) . ?
C15 C16 1.497(6) . ?

loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
_geom_angle_site_symmetry_1
_geom_angle_site_symmetry_3
_geom_angle_publ_flag
P2 Sn1 P1 87.79(3) . . ?
P2 Sn1 Li1 57.44(11) . . ?
P1 Sn1 Li1 58.00(12) . . ?
C1 P1 Sn1 102.72(11) . . ?
C1 P1 Li2 125.08(17) . . ?
Sn1 P1 Li2 132.19(13) . . ?
C1 P1 Li1 64.73(19) . . ?
Sn1 P1 Li1 71.68(13) . . ?
Li2 P1 Li1 126.83(19) . . ?
C6 P2 Sn1 103.26(12) . . ?
C6 P2 Li2 121.48(18) . 2_746 ?
Sn1 P2 Li2 135.25(14) . 2_746 ?
C6 P2 Li1 66.1(2) . . ?
Sn1 P2 Li1 72.29(11) . . ?
Li2 P2 Li1 124.6(2) 2_746 . ?
C2 C1 C6 117.1(4) . . ?
C2 C1 P1 120.6(3) . . ?
C6 C1 P1 122.2(3) . . ?
C2 C1 Li1 127.0(3) . . ?
C6 C1 Li1 73.9(3) . . ?
P1 C1 Li1 75.0(2) . . ?
C3 C2 C1 123.5(4) . . ?
C2 C3 C4 120.0(5) . . ?
C5 C4 C3 118.3(4) . . ?
C4 C5 C6 124.1(4) . . ?
C5 C6 C1 117.1(4) . . ?
C5 C6 P2 119.5(3) . . ?
C1 C6 P2 123.5(3) . . ?
C5 C6 Li1 126.2(4) . . ?
C1 C6 Li1 73.0(3) . . ?
P2 C6 Li1 74.2(2) . . ?
N2 Li1 N1 83.4(4) . . ?
N2A Li1 N1 84.9(4) . . ?
N2 Li1 N1A 85.9(4) . . ?
N2A Li1 N1A 88.7(4) . . ?
N2 Li1 C1 105.0(3) . . ?
N2A Li1 C1 107.0(4) . . ?
N1 Li1 C1 156.4(4) . . ?
N1A Li1 C1 147.6(4) . . ?
N2 Li1 C6 102.3(3) . . ?
N2A Li1 C6 99.0(3) . . ?
N1 Li1 C6 167.3(4) . . ?
N1A Li1 C6 171.3(3) . . ?
C1 Li1 C6 33.12(15) . . ?
N2 Li1 P2 123.4(3) . . ?
N2A Li1 P2 115.4(3) . . ?
N1 Li1 P2 127.7(3) . . ?
N1A Li1 P2 132.7(4) . . ?
C1 Li1 P2 66.16(16) . . ?
C6 Li1 P2 39.75(12) . . ?
N2 Li1 P1 132.3(4) . . ?
N2A Li1 P1 139.0(4) . . ?
N1 Li1 P1 118.5(3) . . ?
N1A Li1 P1 110.7(3) . . ?
C1 Li1 P1 40.32(13) . . ?
C6 Li1 P1 65.93(18) . . ?
P2 Li1 P1 78.23(16) . . ?
N2 Li1 Sn1 173.6(4) . . ?
N2A Li1 Sn1 164.6(4) . . ?
N1 Li1 Sn1 100.3(3) . . ?
N1A Li1 Sn1 98.6(3) . . ?
C1 Li1 Sn1 73.67(17) . . ?
C6 Li1 Sn1 73.00(17) . . ?
P2 Li1 Sn1 50.27(10) . . ?
P1 Li1 Sn1 50.32(10) . . ?
C9 N1 C8 91.7(8) . . ?
C9 N1 C7 107.7(9) . . ?
C8 N1 C7 116.4(9) . . ?
C9 N1 Li1 110.6(6) . . ?
C8 N1 Li1 116.2(7) . . ?
C7 N1 Li1 112.0(9) . . ?
C10 N2 C12 111.5(10) . . ?
C10 N2 C11 105.1(10) . . ?
C12 N2 C11 108.6(10) . . ?
C10 N2 Li1 107.2(7) . . ?
C12 N2 Li1 117.5(10) . . ?
C11 N2 Li1 106.0(7) . . ?
N1 C9 C10 111.2(9) . . ?
C9 C10 N2 120.0(8) . . ?
C7A N1A C9A 110.9(9) . . ?
C7A N1A C8A 97.6(12) . . ?
C9A N1A C8A 122.4(12) . . ?
C7A N1A Li1 111.9(8) . . ?
C9A N1A Li1 98.2(7) . . ?
C8A N1A Li1 116.4(9) . . ?
C10A N2A C11A 117.2(10) . . ?
C10A N2A C12A 111.8(13) . . ?
C11A N2A C12A 105.3(9) . . ?
C10A N2A Li1 101.1(7) . . ?
C11A N2A Li1 115.3(6) . . ?
C12A N2A Li1 105.7(9) . . ?
N1A C9A C10A 111.4(9) . . ?
N2A C10A C9A 109.5(10) . . ?
N3 Li2 N4 85.3(3) . . ?
N3 Li2 P2 109.0(3) . 2_756 ?
N4 Li2 P2 105.9(2) . 2_756 ?
N3 Li2 P1 112.8(3) . . ?
N4 Li2 P1 118.0(3) . . ?
P2 Li2 P1 120.3(2) 2_756 . ?
C14 N3 C15 109.0(4) . . ?
C14 N3 C13 107.3(7) . . ?
C15 N3 C13 113.1(6) . . ?
C14 N3 Li2 114.5(4) . . ?
C15 N3 Li2 102.2(3) . . ?
C13 N3 Li2 110.9(7) . . ?
C17 N4 C16 109.8(5) . . ?
C17 N4 C18 108.2(5) . . ?
C16 N4 C18 109.8(4) . . ?
C17 N4 Li2 116.0(4) . . ?
C16 N4 Li2 103.3(3) . . ?
C18 N4 Li2 109.7(3) . . ?
N3 C15 C16 111.0(4) . . ?
N4 C16 C15 111.9(4) . . ?

_diffrn_measured_fraction_theta_max 0.996
_diffrn_reflns_theta_full        25.03
_diffrn_measured_fraction_theta_full 0.996
_refine_diff_density_max         0.230
_refine_diff_density_min         -0.308
_refine_diff_density_rms         0.054