(μ-Ethane-1,2-diamine-κ2N:N′)bis­[dicarbon­yl(η5-cyclo­penta­dien­yl)iron(II)] bis­(tetra­fluorido­borate)

M'thiruaine, C.M.; Friedrich, H.B.; Changamu, E.O.; Omondi, B.

doi:10.1107/S1600536811010154

metal-organic compounds

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ISSN: 2056-9890

Volume 67| Part 4| April 2011| Page m485

doi:10.1107/S1600536811010154

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(μ-Ethane-1,2-diamine-κ²N:N′)bis[dicarbonyl(η⁵-cyclopentadienyl)iron(II)] bis(tetrafluoridoborate)

Cyprian M. M'thiruaine,^a Holger B. Friedrich,^a Evans O. Changamu ^b and Bernard Omondi ^c ^*

^aSchool of Chemistry, University of KwaZulu-Natal, Westville Campus, Private Bag X54001, Durban 4000, South Africa, ^bChemistry Department, Kenyatta University, PO Box 43844, Nairobi, Kenya, and ^cResearch Centre for Synthesis and Catalysis, Department of Chemistry, University of Johannesburg, PO Box 524 Auckland Park, Johannesburg 2006, South Africa
^*Correspondence e-mail: boowaga@uj.ac.za

(Received 23 February 2011; accepted 17 March 2011; online 26 March 2011)

The asymmetric unit of the title compound, [Fe₂(C₅H₅)₂(C₂H₈N₂)(CO)₄](BF₄)₂, contains two half-cations, each located on a center of symmetry, and two tetrafluoridoborate anions. The iron atoms adopt a three-legged piano-stool geometry. All amine H atoms are involved in N—H⋯F hydrogen bonds, which consolidate the crystal packing along with weak C—H⋯O and C—H⋯F interactions.

Related literature

For the synthesis of the title compound and our previous work in this area, see: M'thiruaine et al. (2011 ). For related binuclear structures, see: Changamu & Friedrich (2008 ); Friedrich et al. (2005 ); Changamu, Friedrich, Howie & Rademeyer (2007 ); Changamu, Friedrich & Rademeyer (2007 ); Changamu et al. (2009 ).

Experimental

Crystal data

[Fe₂(C₅H₅)₂(C₂H₈N₂)(CO)₄](BF₄)₂
M_r = 587.64
Monoclinic, P 2₁ /c
a = 11.5593 (7) Å
b = 15.5194 (9) Å
c = 12.4056 (8) Å
β = 95.774 (1)°
V = 2214.2 (2) Å³
Z = 4
Mo Kα radiation
μ = 1.40 mm⁻¹
T = 100 K
0.22 × 0.10 × 0.03 mm

Data collection

Bruker X8 APEXII 4K Kappa CCD diffractometer
Absorption correction: multi-scan (SADABS; Bruker, 2007 ) T_min = 0.748, T_max = 0.959
50791 measured reflections
5520 independent reflections
4548 reflections with I > 2σ(I)
R_int = 0.050

Refinement

R[F² > 2σ(F²)] = 0.033
wR(F²) = 0.084
S = 1.14
5520 reflections
307 parameters
5 restraints
H-atom parameters constrained
Δρ_max = 0.52 e Å⁻³
Δρ_min = −0.36 e Å⁻³

Table 1
Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1A⋯F8ⁱ	0.92	2.11	2.994 (2)	160
N1—H1B⋯F4ⁱⁱ	0.92	2.06	2.890 (2)	149
N2—H2B⋯F7ⁱⁱⁱ	0.92	1.99	2.886 (2)	164
C3—H3⋯F1^iv	1	2.36	3.326 (3)	163
C5—H5⋯F5^v	1	2.39	3.216 (3)	139
C10—H10⋯O2^vi	1	2.56	3.397 (3)	141
C10—H10⋯O3^vi	1	2.57	3.326 (3)	132
C12—H12⋯F2ⁱⁱ	1	2.37	3.200 (3)	140
Symmetry codes: (i) x+1, y, z; (ii) x, y, z+1; (iii) $[x, -y+{\script{1\over 2}}, z-{\script{1\over 2}}]$ ; (iv) -x+2, -y, -z+1; (v) $[x+1, -y+{\script{1\over 2}}, z-{\script{1\over 2}}]$ ; (vi) $[-x+1, y+{\script{1\over 2}}, -z+{\script{3\over 2}}]$ .

Data collection: APEX2 (Bruker, 2007); cell refinement: SAINT-Plus (Bruker, 2007); data reduction: SAINT-Plus and XPREP (Bruker, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997 ); software used to prepare material for publication: WinGX (Farrugia, 1999 ).

Supporting information

Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536811010154/rz2564sup1.cif

Structure factors: contains datablock I. DOI: 10.1107/S1600536811010154/rz2564Isup2.hkl

checkCIF report

Comment top

The title compound is a water-soluble organometallic compound which was prepared as part of our ongoing study on functionalized alkyl transition metal complexes (M'thiruaine et al., 2011; Changamu & Friedrich 2008; Friedrich et al., 2005; Changamu, Friedrich, Howie, & Rademeyer, 2007; Changamu, Friedrich & Rademeyer, 2007; Changamu, Friedrich & Rademeyer, 2007; Changamu et al., 2009). The asymmetric unit (Fig. 1) has two half-cations, each located on a center of symmetry, and two tetrafluoroborate counteranions. The Fe metals are coordinated in three-legged piano-stool fashion with the cyclopentadienyl rings occupying the apical positions and two carbonyl ligands and one ethylenediamine nitrogen occupying the basal positions. The cyclopentadienyl ligands are trans to each other and the ethylenediamine ligands display a trans conformation. The Fe–Cg distances are 1.7123 (3) and 1.7103 (3) Å for atoms Fe1 and Fe2, respectively (Cg is the centroid of the cyclopentadienyl rings). In the crystal structure, the amine hydrogen atoms and the fluorine atoms of the tetrafluoroborate anions are engaged in three N—H···F intermolecular interactions (Table 1). Three H atoms of the cyclopentadienyl rings are also involved in C—H···F intermolecular interactions. Three C—H···O hydrogen bonds then complete the stabilization of the crystal lattice (Fig. 2).

Related literature top

For the synthesis of the title compound and our previous work in this area, see: M'thiruaine et al. (2011). For related binuclear structures, see: Changamu & Friedrich (2008); Friedrich et al. (2005); Changamu, Friedrich, Howie, & Rademeyer (2007); Changamu, Friedrich & Rademeyer (2007); Changamu, Friedrich & Rademeyer (2007); Changamu et al. (2009).

Experimental top

The compound was synthesized by reacting ethylenediamine with two equivalents of [CpFe(CO)₂(Et₂O)]BF₄, according to the literature procedure (M'thiruaine et al., 2011). Yield: 0.339 g, 78%; m.p: dec >120°C. Spectroscopic analysis: ¹H NMR (400 MHz, acetone-d6): δ 5.48 (s, 10H, Cp), 3.33 (s, 4H, NH₂), 2.58 (s, 4H, CH₂). ¹³C NMR (400 MHz, acetone-d6): δ 87.43 (Cp), 54.50 (CH₂), 211.92 (CO). Ms: m/z 500.8 [[{CpFe(CO)₂}₂NH₂CH₂CH₂NH₂]BF₄]⁺; 236.7 [CpFe(CO)₂NH₂CH₂CH₂NH₂]⁺; 220.9 [CpFe(CO)₂NH₂CH₂CH₂]⁺; 206.6 [CpFe(CO)₂NH₂CH₂]⁺; 194.6 [CpFe(CO)₂NH₂⁺₂H]⁺; 176.6 [CpFe(CO)₂]⁺. Elemental analysis: calculated for C₁₆H₁₈B₂F₈Fe₂N₂O₄: C, 32.65; H, 3.06; N, 4.76. Found: C, 32.96; H, 3.28; N, 5.02%. IR (solid state): ν(CO) 2054, 2001 cm^-1; ν(NH) 3315, 3276 cm^-1.

Computing details top

Data collection: APEX2 (Bruker, 2007); cell refinement: SAINT-Plus (Bruker, 2007); data reduction: SAINT-Plus and XPREP (Bruker, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: WinGX (Farrugia, 1999).

Figures top

	Fig. 1. The asymmetric unit of the title compound with displacement ellipsoids drawn at the 50% probability level. Hydrogen atoms are omitted for clarity. Symmetry codes: (a) 2 - x, -y, 2 - z; (b) 1 - x, 1 - y, 1 - z
	Fig. 2. Partial crystal packing of the title compound showing, N–H···F, C–H···O and C–H···F intermolecular hydrogen interactions (dashed lines). Symmetry codes: (i) x + 1, y, z; (ii) x, y, z + 1; (iii) x, -y + 1/2, z - 1/2; (iv) -x + 2, -y, -z + 1; (v) x + 1, -y + 1/2, z - 1/2; (vi) -x + 1, y + 1/2, -z + 3/2.

(µ-Ethane-1,2-diamine-κ²N:N')bis[dicarbonyl(η⁵- cyclopentadienyl)iron(II)] bis(tetrafluoridoborate) top

Crystal data top

[Fe₂(C₅H₅)₂(C₂H₈N₂)(CO)₄](BF₄)₂	F(000) = 1176
M_r = 587.64	D_x = 1.763 Mg m⁻³
Monoclinic, P2₁/c	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ybc	Cell parameters from 51845 reflections
a = 11.5593 (7) Å	θ = 1.8–28.3°
b = 15.5194 (9) Å	µ = 1.40 mm⁻¹
c = 12.4056 (8) Å	T = 100 K
β = 95.774 (1)°	Plate, yellow
V = 2214.2 (2) Å³	0.22 × 0.1 × 0.03 mm
Z = 4

Data collection top

Bruker X8 APEXII 4K Kappa CCD diffractometer	4548 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.050
ϕ and ω scans	θ_max = 28.3°, θ_min = 1.8°
Absorption correction: multi-scan (SADABS; Bruker, 2007)	h = −15→15
T_min = 0.748, T_max = 0.959	k = −20→20
50791 measured reflections	l = −16→16
5520 independent reflections

Refinement top

Refinement on F²	Primary atom site location: structure-invariant direct methods
Least-squares matrix: full	Secondary atom site location: difference Fourier map
R[F² > 2σ(F²)] = 0.033	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.084	H-atom parameters constrained
S = 1.14	w = 1/[σ²(F_o²) + (0.0322P)² + 1.9P] where P = (F_o² + 2F_c²)/3
5520 reflections	(Δ/σ)_max = 0.012
307 parameters	Δρ_max = 0.52 e Å⁻³
5 restraints	Δρ_min = −0.36 e Å⁻³

Crystal data top

[Fe₂(C₅H₅)₂(C₂H₈N₂)(CO)₄](BF₄)₂	V = 2214.2 (2) Å³
M_r = 587.64	Z = 4
Monoclinic, P2₁/c	Mo Kα radiation
a = 11.5593 (7) Å	µ = 1.40 mm⁻¹
b = 15.5194 (9) Å	T = 100 K
c = 12.4056 (8) Å	0.22 × 0.1 × 0.03 mm
β = 95.774 (1)°

Data collection top

Bruker X8 APEXII 4K Kappa CCD diffractometer	5520 independent reflections
Absorption correction: multi-scan (SADABS; Bruker, 2007)	4548 reflections with I > 2σ(I)
T_min = 0.748, T_max = 0.959	R_int = 0.050
50791 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.033	5 restraints
wR(F²) = 0.084	H-atom parameters constrained
S = 1.14	Δρ_max = 0.52 e Å⁻³
5520 reflections	Δρ_min = −0.36 e Å⁻³
307 parameters

Special details top

Experimental. The intensity data was collected on a Bruker X8 Apex 4 K CCD diffractometer using an exposure time of 20 sec/per frame. A total of 2220 frames were collected with a frame width of 0.5° covering upto θ = 28.31° with 99.9% completeness accomplished.

Two reflections omited. -8 2 2 and 5 2 6 Reason - affecting number of intensities with I.LT - 2*sig(I)

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

Refinement. Refinement of F² against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F², conventional R-factors R are based on F, with F set to zero for negative F². The threshold expression of F² > σ(F²) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F² are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å²) top

	x	y	z	U_iso*/U_eq
C1	0.9375 (2)	0.08248 (16)	0.57592 (18)	0.0247 (5)
H1	0.8639	0.0936	0.5285	0.03*
C2	0.9648 (2)	0.00609 (14)	0.63716 (18)	0.0219 (5)
H2	0.9135	−0.0454	0.641	0.026*
C3	1.07764 (19)	0.01558 (14)	0.68957 (18)	0.0203 (4)
H3	1.1197	−0.0279	0.7384	0.024*
C4	1.1215 (2)	0.09711 (14)	0.66286 (19)	0.0219 (5)
H4	1.2001	0.1208	0.6878	0.026*
C5	1.0341 (2)	0.13820 (15)	0.59066 (19)	0.0248 (5)
H5	1.0408	0.1959	0.5559	0.03*
C6	0.81634 (18)	0.10642 (13)	0.75085 (17)	0.0162 (4)
C7	0.97598 (19)	0.22773 (14)	0.76730 (18)	0.0194 (4)
C8	0.97213 (17)	0.00688 (13)	0.94213 (16)	0.0144 (4)
H8A	0.9856	−0.0445	0.8978	0.017*
H8B	0.8871	0.0144	0.9427	0.017*
N1	1.02188 (15)	0.08372 (11)	0.89374 (14)	0.0156 (3)
H1A	1.1013	0.0767	0.8992	0.019*
H1B	1.0071	0.1304	0.936	0.019*
O1	0.97866 (16)	0.29991 (10)	0.78238 (15)	0.0309 (4)
O2	0.71853 (14)	0.09930 (11)	0.74774 (14)	0.0250 (4)
Fe1	0.96912 (2)	0.114343 (18)	0.73886 (2)	0.01336 (8)
C9	0.48038 (18)	0.49238 (13)	0.55612 (17)	0.0166 (4)
H9A	0.5125	0.5381	0.6062	0.02*
H9B	0.3945	0.4954	0.552	0.02*
C10	0.5143 (2)	0.48047 (14)	0.85356 (18)	0.0223 (5)
H10	0.469	0.5355	0.8478	0.027*
C11	0.4862 (2)	0.40502 (15)	0.91205 (18)	0.0213 (4)
H11	0.4181	0.3982	0.9551	0.026*
C12	0.5737 (2)	0.34334 (15)	0.90177 (18)	0.0226 (5)
H12	0.5778	0.2848	0.9355	0.027*
C13	0.6554 (2)	0.37873 (16)	0.83542 (19)	0.0250 (5)
H13	0.7271	0.3497	0.8145	0.03*
C14	0.6186 (2)	0.46380 (15)	0.80752 (19)	0.0238 (5)
H14	0.6593	0.5048	0.7619	0.029*
C15	0.33575 (18)	0.38898 (13)	0.72337 (17)	0.0172 (4)
C16	0.4813 (2)	0.26115 (14)	0.71961 (19)	0.0217 (4)
N2	0.52009 (16)	0.40719 (11)	0.59844 (14)	0.0169 (4)
H2A	0.5991	0.4041	0.5946	0.02*
H2B	0.4862	0.366	0.5522	0.02*
O3	0.47605 (17)	0.18899 (11)	0.70654 (16)	0.0352 (4)
O4	0.23808 (14)	0.40008 (11)	0.71176 (15)	0.0278 (4)
Fe2	0.48971 (2)	0.374292 (18)	0.74962 (2)	0.01372 (8)
B1	0.7830 (2)	0.17693 (15)	0.0504 (2)	0.0185 (5)
F1	0.78888 (12)	0.09908 (9)	0.10823 (12)	0.0298 (3)
F2	0.70586 (14)	0.16543 (10)	−0.04143 (12)	0.0349 (4)
F3	0.74205 (13)	0.24107 (9)	0.11366 (13)	0.0328 (3)
F4	0.89235 (13)	0.19761 (10)	0.02152 (14)	0.0368 (4)
B2	0.2759 (2)	0.19786 (17)	0.9296 (2)	0.0226 (5)
F5	0.18759 (16)	0.21368 (12)	0.99271 (18)	0.0577 (6)
F6	0.25526 (17)	0.23972 (12)	0.83285 (16)	0.0568 (6)
F7	0.38195 (13)	0.22456 (10)	0.98276 (14)	0.0387 (4)
F8	0.27978 (13)	0.10907 (10)	0.90999 (15)	0.0384 (4)

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
C1	0.0269 (12)	0.0314 (13)	0.0155 (10)	0.0102 (10)	0.0010 (9)	−0.0019 (9)
C2	0.0274 (11)	0.0177 (10)	0.0219 (11)	0.0023 (9)	0.0082 (9)	−0.0068 (8)
C3	0.0235 (11)	0.0181 (10)	0.0204 (10)	0.0085 (9)	0.0080 (9)	0.0014 (8)
C4	0.0210 (11)	0.0205 (11)	0.0259 (11)	0.0027 (9)	0.0106 (9)	0.0011 (9)
C5	0.0352 (13)	0.0197 (11)	0.0218 (11)	0.0091 (9)	0.0147 (10)	0.0067 (8)
C6	0.0188 (8)	0.0125 (9)	0.0179 (10)	0.0011 (8)	0.0038 (8)	−0.0006 (7)
C7	0.0204 (10)	0.0158 (8)	0.0217 (10)	0.0009 (8)	0.0008 (9)	0.0010 (8)
C8	0.0139 (9)	0.0130 (9)	0.0161 (10)	−0.0016 (7)	0.0008 (8)	0.0004 (7)
N1	0.0165 (8)	0.0145 (8)	0.0162 (8)	−0.0017 (7)	0.0030 (7)	0.0012 (7)
O1	0.0383 (10)	0.0147 (8)	0.0383 (10)	0.0016 (7)	−0.0024 (8)	−0.0015 (7)
O2	0.0166 (8)	0.0261 (9)	0.0322 (9)	−0.0001 (6)	0.0023 (7)	0.0004 (7)
Fe1	0.01438 (14)	0.01098 (13)	0.01499 (14)	0.00171 (11)	0.00288 (11)	0.00099 (11)
C9	0.0164 (9)	0.0152 (10)	0.0185 (10)	0.0011 (8)	0.0035 (8)	0.0027 (8)
C10	0.0266 (11)	0.0154 (10)	0.0233 (11)	−0.0021 (9)	−0.0054 (9)	−0.0029 (8)
C11	0.0245 (11)	0.0220 (11)	0.0173 (10)	−0.0038 (9)	0.0021 (9)	−0.0011 (8)
C12	0.0270 (12)	0.0194 (11)	0.0203 (11)	0.0003 (9)	−0.0035 (9)	0.0046 (8)
C13	0.0166 (10)	0.0308 (12)	0.0265 (12)	0.0002 (9)	−0.0036 (9)	0.0033 (10)
C14	0.0216 (11)	0.0241 (11)	0.0243 (11)	−0.0112 (8)	−0.0044 (9)	0.0053 (9)
C15	0.0175 (7)	0.0140 (9)	0.0204 (10)	0.0007 (8)	0.0034 (8)	0.0031 (8)
C16	0.0224 (11)	0.0148 (8)	0.0279 (12)	0.0023 (8)	0.0017 (9)	0.0006 (8)
N2	0.0187 (9)	0.0143 (8)	0.0181 (8)	0.0024 (7)	0.0039 (7)	0.0028 (7)
O3	0.0412 (11)	0.0154 (8)	0.0480 (12)	0.0028 (8)	−0.0006 (9)	−0.0020 (8)
O4	0.0175 (8)	0.0254 (9)	0.0410 (10)	0.0022 (7)	0.0048 (7)	0.0044 (7)
Fe2	0.01287 (14)	0.01104 (14)	0.01749 (15)	−0.00015 (11)	0.00264 (11)	0.00186 (11)
B1	0.0181 (11)	0.0146 (11)	0.0237 (12)	−0.0003 (9)	0.0064 (9)	−0.0038 (9)
F1	0.0247 (7)	0.0270 (7)	0.0380 (8)	0.0034 (6)	0.0049 (6)	0.0090 (6)
F2	0.0416 (9)	0.0320 (8)	0.0291 (8)	−0.0016 (7)	−0.0064 (7)	−0.0019 (6)
F3	0.0315 (8)	0.0280 (8)	0.0411 (9)	0.0001 (6)	0.0145 (7)	−0.0151 (6)
F4	0.0300 (8)	0.0287 (8)	0.0559 (10)	−0.0103 (6)	0.0247 (7)	−0.0126 (7)
B2	0.0151 (11)	0.0204 (12)	0.0316 (14)	−0.0058 (9)	−0.0009 (10)	0.0064 (10)
F5	0.0409 (10)	0.0524 (12)	0.0845 (15)	−0.0158 (9)	0.0292 (10)	−0.0334 (10)
F6	0.0543 (11)	0.0554 (12)	0.0550 (12)	−0.0269 (9)	−0.0226 (9)	0.0326 (9)
F7	0.0267 (8)	0.0353 (9)	0.0502 (10)	−0.0140 (7)	−0.0152 (7)	0.0142 (7)
F8	0.0213 (7)	0.0241 (8)	0.0684 (12)	0.0012 (6)	−0.0016 (7)	0.0004 (7)

Geometric parameters (Å, º) top

C1—C5	1.409 (4)	C10—C14	1.409 (3)
C1—C2	1.426 (3)	C10—C11	1.432 (3)
C1—Fe1	2.077 (2)	C10—Fe2	2.094 (2)
C1—H1	1	C10—H10	1
C2—C3	1.405 (3)	C11—C12	1.407 (3)
C2—Fe1	2.099 (2)	C11—Fe2	2.075 (2)
C2—H2	1	C11—H11	1
C3—C4	1.415 (3)	C12—C13	1.424 (3)
C3—Fe1	2.110 (2)	C12—Fe2	2.090 (2)
C3—H3	1	C12—H12	1
C4—C5	1.431 (3)	C13—C14	1.419 (3)
C4—Fe1	2.097 (2)	C13—Fe2	2.097 (2)
C4—H4	1	C13—H13	1
C5—Fe1	2.088 (2)	C14—Fe2	2.109 (2)
C5—H5	1	C14—H14	1
C6—O2	1.133 (3)	C15—O4	1.137 (3)
C6—Fe1	1.791 (2)	C15—Fe2	1.791 (2)
C7—O1	1.136 (3)	C16—O3	1.132 (3)
C7—Fe1	1.795 (2)	C16—Fe2	1.796 (2)
C8—N1	1.477 (2)	N2—Fe2	2.0085 (18)
C8—C8ⁱ	1.528 (4)	N2—H2A	0.92
C8—H8A	0.99	N2—H2B	0.92
C8—H8B	0.99	B1—F3	1.381 (3)
N1—Fe1	2.0134 (17)	B1—F4	1.385 (3)
N1—H1A	0.92	B1—F2	1.386 (3)
N1—H1B	0.92	B1—F1	1.404 (3)
C9—N2	1.478 (3)	B2—F6	1.364 (3)
C9—C9ⁱⁱ	1.526 (4)	B2—F5	1.370 (3)
C9—H9A	0.99	B2—F7	1.395 (3)
C9—H9B	0.99	B2—F8	1.401 (3)

C5—C1—C2	108.1 (2)	C14—C10—C11	107.6 (2)
C5—C1—Fe1	70.63 (13)	C14—C10—Fe2	71.01 (13)
C2—C1—Fe1	70.84 (13)	C11—C10—Fe2	69.21 (12)
C5—C1—H1	125.9	C14—C10—H10	126.2
C2—C1—H1	125.9	C11—C10—H10	126.2
Fe1—C1—H1	125.9	Fe2—C10—H10	126.2
C3—C2—C1	107.7 (2)	C12—C11—C10	108.0 (2)
C3—C2—Fe1	70.92 (12)	C12—C11—Fe2	70.81 (13)
C1—C2—Fe1	69.23 (13)	C10—C11—Fe2	70.62 (12)
C3—C2—H2	126.1	C12—C11—H11	126
C1—C2—H2	126.1	C10—C11—H11	126
Fe1—C2—H2	126.1	Fe2—C11—H11	126
C2—C3—C4	108.8 (2)	C11—C12—C13	108.3 (2)
C2—C3—Fe1	70.07 (12)	C11—C12—Fe2	69.69 (13)
C4—C3—Fe1	69.85 (12)	C13—C12—Fe2	70.38 (13)
C2—C3—H3	125.6	C11—C12—H12	125.8
C4—C3—H3	125.6	C13—C12—H12	125.8
Fe1—C3—H3	125.6	Fe2—C12—H12	125.8
C3—C4—C5	107.4 (2)	C14—C13—C12	107.4 (2)
C3—C4—Fe1	70.85 (12)	C14—C13—Fe2	70.76 (13)
C5—C4—Fe1	69.68 (12)	C12—C13—Fe2	69.84 (13)
C3—C4—H4	126.3	C14—C13—H13	126.3
C5—C4—H4	126.3	C12—C13—H13	126.3
Fe1—C4—H4	126.3	Fe2—C13—H13	126.3
C1—C5—C4	107.9 (2)	C10—C14—C13	108.6 (2)
C1—C5—Fe1	69.82 (13)	C10—C14—Fe2	69.82 (13)
C4—C5—Fe1	70.33 (12)	C13—C14—Fe2	69.80 (13)
C1—C5—H5	126	C10—C14—H14	125.7
C4—C5—H5	126	C13—C14—H14	125.7
Fe1—C5—H5	126	Fe2—C14—H14	125.7
O2—C6—Fe1	173.12 (19)	O4—C15—Fe2	176.5 (2)
O1—C7—Fe1	178.0 (2)	O3—C16—Fe2	176.3 (2)
N1—C8—C8ⁱ	110.5 (2)	C9—N2—Fe2	118.79 (13)
N1—C8—H8A	109.6	C9—N2—H2A	107.6
C8ⁱ—C8—H8A	109.6	Fe2—N2—H2A	107.6
N1—C8—H8B	109.6	C9—N2—H2B	107.6
C8ⁱ—C8—H8B	109.6	Fe2—N2—H2B	107.6
H8A—C8—H8B	108.1	H2A—N2—H2B	107
C8—N1—Fe1	119.03 (13)	C15—Fe2—C16	93.13 (10)
C8—N1—H1A	107.6	C15—Fe2—N2	93.54 (8)
Fe1—N1—H1A	107.6	C16—Fe2—N2	93.78 (9)
C8—N1—H1B	107.6	C15—Fe2—C11	91.78 (9)
Fe1—N1—H1B	107.6	C16—Fe2—C11	114.84 (10)
H1A—N1—H1B	107	N2—Fe2—C11	150.54 (8)
C6—Fe1—C7	94.32 (10)	C15—Fe2—C12	123.78 (9)
C6—Fe1—N1	96.38 (8)	C16—Fe2—C12	88.46 (10)
C7—Fe1—N1	92.33 (9)	N2—Fe2—C12	142.46 (9)
C6—Fe1—C1	89.22 (9)	C11—Fe2—C12	39.50 (9)
C7—Fe1—C1	115.13 (10)	C15—Fe2—C10	94.73 (9)
N1—Fe1—C1	151.53 (9)	C16—Fe2—C10	153.95 (10)
C6—Fe1—C5	122.03 (10)	N2—Fe2—C10	110.45 (8)
C7—Fe1—C5	89.23 (10)	C11—Fe2—C10	40.17 (9)
N1—Fe1—C5	141.34 (9)	C12—Fe2—C10	66.59 (9)
C1—Fe1—C5	39.55 (10)	C15—Fe2—C13	158.17 (10)
C6—Fe1—C4	155.27 (10)	C16—Fe2—C13	99.50 (10)
C7—Fe1—C4	101.01 (9)	N2—Fe2—C13	103.24 (9)
N1—Fe1—C4	102.21 (8)	C11—Fe2—C13	66.78 (9)
C1—Fe1—C4	66.76 (9)	C12—Fe2—C13	39.78 (9)
C5—Fe1—C4	39.98 (9)	C10—Fe2—C13	66.50 (10)
C6—Fe1—C2	91.78 (9)	C15—Fe2—C14	129.26 (10)
C7—Fe1—C2	154.28 (10)	C16—Fe2—C14	137.42 (10)
N1—Fe1—C2	111.80 (8)	N2—Fe2—C14	88.09 (8)
C1—Fe1—C2	39.93 (9)	C11—Fe2—C14	66.43 (9)
C5—Fe1—C2	66.51 (9)	C12—Fe2—C14	66.17 (9)
C4—Fe1—C2	66.28 (9)	C10—Fe2—C14	39.17 (9)
C6—Fe1—C3	126.45 (9)	C13—Fe2—C14	39.44 (9)
C7—Fe1—C3	138.89 (10)	F3—B1—F4	110.73 (19)
N1—Fe1—C3	88.46 (8)	F3—B1—F2	109.3 (2)
C1—Fe1—C3	66.20 (9)	F4—B1—F2	110.2 (2)
C5—Fe1—C3	66.20 (8)	F3—B1—F1	109.35 (19)
C4—Fe1—C3	39.30 (8)	F4—B1—F1	109.47 (19)
C2—Fe1—C3	39.01 (9)	F2—B1—F1	107.66 (18)
N2—C9—C9ⁱⁱ	110.6 (2)	F6—B2—F5	110.0 (2)
N2—C9—H9A	109.5	F6—B2—F7	110.02 (19)
C9ⁱⁱ—C9—H9A	109.5	F5—B2—F7	110.3 (2)
N2—C9—H9B	109.5	F6—B2—F8	108.8 (2)
C9ⁱⁱ—C9—H9B	109.5	F5—B2—F8	108.30 (19)
H9A—C9—H9B	108.1	F7—B2—F8	109.4 (2)

C5—C1—C2—C3	0.3 (2)	C14—C10—C11—C12	0.3 (3)
Fe1—C1—C2—C3	−60.77 (15)	Fe2—C10—C11—C12	61.28 (16)
C5—C1—C2—Fe1	61.11 (15)	C14—C10—C11—Fe2	−60.95 (16)
C1—C2—C3—C4	0.4 (2)	C10—C11—C12—C13	−1.2 (3)
Fe1—C2—C3—C4	−59.27 (15)	Fe2—C11—C12—C13	60.01 (16)
C1—C2—C3—Fe1	59.70 (15)	C10—C11—C12—Fe2	−61.17 (15)
C2—C3—C4—C5	−1.0 (2)	C11—C12—C13—C14	1.5 (3)
Fe1—C3—C4—C5	−60.42 (15)	Fe2—C12—C13—C14	61.11 (16)
C2—C3—C4—Fe1	59.41 (15)	C11—C12—C13—Fe2	−59.58 (16)
C2—C1—C5—C4	−1.0 (2)	C11—C10—C14—C13	0.6 (3)
Fe1—C1—C5—C4	60.28 (16)	Fe2—C10—C14—C13	−59.18 (16)
C2—C1—C5—Fe1	−61.24 (15)	C11—C10—C14—Fe2	59.80 (15)
C3—C4—C5—C1	1.2 (2)	C12—C13—C14—C10	−1.3 (3)
Fe1—C4—C5—C1	−59.95 (15)	Fe2—C13—C14—C10	59.20 (16)
C3—C4—C5—Fe1	61.17 (15)	C12—C13—C14—Fe2	−60.52 (16)
C8ⁱ—C8—N1—Fe1	177.40 (16)	C9ⁱⁱ—C9—N2—Fe2	175.74 (18)
C8—N1—Fe1—C6	48.97 (16)	C9—N2—Fe2—C15	57.08 (16)
C8—N1—Fe1—C7	143.59 (16)	C9—N2—Fe2—C16	150.45 (17)
C8—N1—Fe1—C1	−51.2 (2)	C9—N2—Fe2—C11	−42.9 (3)
C8—N1—Fe1—C5	−124.73 (16)	C9—N2—Fe2—C12	−117.16 (17)
C8—N1—Fe1—C4	−114.62 (15)	C9—N2—Fe2—C10	−39.31 (18)
C8—N1—Fe1—C2	−45.53 (17)	C9—N2—Fe2—C13	−108.86 (16)
C8—N1—Fe1—C3	−77.54 (15)	C9—N2—Fe2—C14	−72.14 (16)
C5—C1—Fe1—C6	148.16 (14)	C12—C11—Fe2—C15	146.81 (14)
C2—C1—Fe1—C6	−93.72 (14)	C10—C11—Fe2—C15	−95.23 (14)
C5—C1—Fe1—C7	53.76 (16)	C12—C11—Fe2—C16	52.54 (16)
C2—C1—Fe1—C7	171.87 (14)	C10—C11—Fe2—C16	170.50 (14)
C5—C1—Fe1—N1	−109.84 (19)	C12—C11—Fe2—N2	−112.77 (19)
C2—C1—Fe1—N1	8.3 (3)	C10—C11—Fe2—N2	5.2 (2)
C2—C1—Fe1—C5	118.12 (19)	C10—C11—Fe2—C12	117.96 (19)
C5—C1—Fe1—C4	−37.85 (13)	C12—C11—Fe2—C10	−117.96 (19)
C2—C1—Fe1—C4	80.26 (14)	C12—C11—Fe2—C13	−37.42 (14)
C5—C1—Fe1—C2	−118.12 (19)	C10—C11—Fe2—C13	80.53 (15)
C5—C1—Fe1—C3	−80.88 (14)	C12—C11—Fe2—C14	−80.56 (15)
C2—C1—Fe1—C3	37.23 (13)	C10—C11—Fe2—C14	37.39 (13)
C1—C5—Fe1—C6	−38.47 (17)	C11—C12—Fe2—C15	−41.17 (17)
C4—C5—Fe1—C6	−157.13 (14)	C13—C12—Fe2—C15	−160.38 (14)
C1—C5—Fe1—C7	−133.09 (15)	C11—C12—Fe2—C16	−133.90 (15)
C4—C5—Fe1—C7	108.25 (15)	C13—C12—Fe2—C16	106.89 (15)
C1—C5—Fe1—N1	134.14 (15)	C11—C12—Fe2—N2	131.91 (15)
C4—C5—Fe1—N1	15.5 (2)	C13—C12—Fe2—N2	12.7 (2)
C4—C5—Fe1—C1	−118.66 (19)	C13—C12—Fe2—C11	−119.2 (2)
C1—C5—Fe1—C4	118.66 (19)	C11—C12—Fe2—C10	38.38 (13)
C1—C5—Fe1—C2	38.12 (13)	C13—C12—Fe2—C10	−80.83 (15)
C4—C5—Fe1—C2	−80.54 (15)	C11—C12—Fe2—C13	119.2 (2)
C1—C5—Fe1—C3	80.87 (14)	C11—C12—Fe2—C14	81.30 (15)
C4—C5—Fe1—C3	−37.79 (13)	C13—C12—Fe2—C14	−37.92 (14)
C3—C4—Fe1—C6	−65.8 (3)	C14—C10—Fe2—C15	−154.65 (14)
C5—C4—Fe1—C6	52.0 (3)	C11—C10—Fe2—C15	87.15 (14)
C3—C4—Fe1—C7	166.93 (14)	C14—C10—Fe2—C16	98.3 (2)
C5—C4—Fe1—C7	−75.33 (15)	C11—C10—Fe2—C16	−19.9 (3)
C3—C4—Fe1—N1	72.08 (14)	C14—C10—Fe2—N2	−59.08 (15)
C5—C4—Fe1—N1	−170.18 (13)	C11—C10—Fe2—N2	−177.28 (13)
C3—C4—Fe1—C1	−80.29 (15)	C14—C10—Fe2—C11	118.21 (19)
C5—C4—Fe1—C1	37.45 (14)	C14—C10—Fe2—C12	80.45 (14)
C3—C4—Fe1—C5	−117.7 (2)	C11—C10—Fe2—C12	−37.75 (14)
C3—C4—Fe1—C2	−36.57 (14)	C14—C10—Fe2—C13	36.92 (13)
C5—C4—Fe1—C2	81.17 (15)	C11—C10—Fe2—C13	−81.29 (15)
C5—C4—Fe1—C3	117.7 (2)	C11—C10—Fe2—C14	−118.21 (19)
C3—C2—Fe1—C6	−154.94 (14)	C14—C13—Fe2—C15	−69.2 (3)
C1—C2—Fe1—C6	86.64 (14)	C12—C13—Fe2—C15	48.6 (3)
C3—C2—Fe1—C7	101.3 (2)	C14—C13—Fe2—C16	166.33 (15)
C1—C2—Fe1—C7	−17.2 (3)	C12—C13—Fe2—C16	−75.89 (15)
C3—C2—Fe1—N1	−57.35 (14)	C14—C13—Fe2—N2	70.13 (15)
C1—C2—Fe1—N1	−175.76 (13)	C12—C13—Fe2—N2	−172.10 (13)
C3—C2—Fe1—C1	118.42 (19)	C14—C13—Fe2—C11	−80.61 (15)
C3—C2—Fe1—C5	80.65 (14)	C12—C13—Fe2—C11	37.17 (14)
C1—C2—Fe1—C5	−37.76 (14)	C14—C13—Fe2—C12	−117.8 (2)
C3—C2—Fe1—C4	36.84 (13)	C14—C13—Fe2—C10	−36.67 (14)
C1—C2—Fe1—C4	−81.57 (15)	C12—C13—Fe2—C10	81.10 (15)
C1—C2—Fe1—C3	−118.42 (19)	C12—C13—Fe2—C14	117.8 (2)
C2—C3—Fe1—C6	31.76 (17)	C10—C14—Fe2—C15	33.45 (18)
C4—C3—Fe1—C6	151.69 (14)	C13—C14—Fe2—C15	153.33 (15)
C2—C3—Fe1—C7	−139.66 (16)	C10—C14—Fe2—C16	−140.03 (16)
C4—C3—Fe1—C7	−19.7 (2)	C13—C14—Fe2—C16	−20.1 (2)
C2—C3—Fe1—N1	128.55 (13)	C10—C14—Fe2—N2	126.46 (14)
C4—C3—Fe1—N1	−111.52 (14)	C13—C14—Fe2—N2	−113.66 (14)
C2—C3—Fe1—C1	−38.10 (14)	C10—C14—Fe2—C11	−38.33 (13)
C4—C3—Fe1—C1	81.83 (15)	C13—C14—Fe2—C11	81.55 (15)
C2—C3—Fe1—C5	−81.50 (15)	C10—C14—Fe2—C12	−81.64 (15)
C4—C3—Fe1—C5	38.43 (15)	C13—C14—Fe2—C12	38.24 (14)
C2—C3—Fe1—C4	−119.93 (19)	C13—C14—Fe2—C10	119.9 (2)
C4—C3—Fe1—C2	119.93 (19)	C10—C14—Fe2—C13	−119.9 (2)

Symmetry codes: (i) −x+2, −y, −z+2; (ii) −x+1, −y+1, −z+1.

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
N1—H1A···F8ⁱⁱⁱ	0.92	2.11	2.994 (2)	160
N1—H1B···F4^iv	0.92	2.06	2.890 (2)	149
N2—H2B···F7^v	0.92	1.99	2.886 (2)	164
C3—H3···F1^vi	1	2.36	3.326 (3)	163
C5—H5···F5^vii	1	2.39	3.216 (3)	139
C10—H10···O2^viii	1	2.56	3.397 (3)	141
C10—H10···O3^viii	1	2.57	3.326 (3)	132
C12—H12···F2^iv	1	2.37	3.200 (3)	140

Symmetry codes: (iii) x+1, y, z; (iv) x, y, z+1; (v) x, −y+1/2, z−1/2; (vi) −x+2, −y, −z+1; (vii) x+1, −y+1/2, z−1/2; (viii) −x+1, y+1/2, −z+3/2.

Experimental details

Crystal data
Chemical formula	[Fe₂(C₅H₅)₂(C₂H₈N₂)(CO)₄](BF₄)₂
M_r	587.64
Crystal system, space group	Monoclinic, P2₁/c
Temperature (K)	100
a, b, c (Å)	11.5593 (7), 15.5194 (9), 12.4056 (8)
β (°)	95.774 (1)
V (Å³)	2214.2 (2)
Z	4
Radiation type	Mo Kα
µ (mm⁻¹)	1.40
Crystal size (mm)	0.22 × 0.1 × 0.03

Data collection
Diffractometer	Bruker X8 APEXII 4K Kappa CCD diffractometer
Absorption correction	Multi-scan (SADABS; Bruker, 2007)
T_min, T_max	0.748, 0.959
No. of measured, independent and observed [I > 2σ(I)] reflections	50791, 5520, 4548
R_int	0.050
(sin θ/λ)_max (Å⁻¹)	0.667

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.033, 0.084, 1.14
No. of reflections	5520
No. of parameters	307
No. of restraints	5
H-atom treatment	H-atom parameters constrained
Δρ_max, Δρ_min (e Å⁻³)	0.52, −0.36

Computer programs: APEX2 (Bruker, 2007), SAINT-Plus (Bruker, 2007), SAINT-Plus and XPREP (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997), WinGX (Farrugia, 1999).

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
N1—H1A···F8ⁱ	0.92	2.11	2.994 (2)	160
N1—H1B···F4ⁱⁱ	0.92	2.06	2.890 (2)	149
N2—H2B···F7ⁱⁱⁱ	0.92	1.99	2.886 (2)	164
C3—H3···F1^iv	1	2.36	3.326 (3)	163
C5—H5···F5^v	1	2.39	3.216 (3)	139
C10—H10···O2^vi	1	2.56	3.397 (3)	141
C10—H10···O3^vi	1	2.57	3.326 (3)	132
C12—H12···F2ⁱⁱ	1	2.37	3.200 (3)	140

Symmetry codes: (i) x+1, y, z; (ii) x, y, z+1; (iii) x, −y+1/2, z−1/2; (iv) −x+2, −y, −z+1; (v) x+1, −y+1/2, z−1/2; (vi) −x+1, y+1/2, −z+3/2.

Acknowledgements

We thank the NRF, THRIP and the University of KwaZulu-Natal for financial support.

References

Bruker (2007). APEX2, SAINT-Plus, SADABS and XPREP. Bruker AXS Inc., Madison, Wisconsin, USA Google Scholar
Changamu, E. O. & Friedrich, H. B. (2008). J. Organomet. Chem. 693, 3351–3356. CrossRef CAS Google Scholar
Changamu, E. O., Friedrich, H. B. & Fernandes, M. A. (2009). Inorg. Chim. Acta, 362, 2947–2950. CrossRef CAS Google Scholar
Changamu, E. O., Friedrich, H. B., Howie, R. A. & Rademeyer, M. (2007). J. Organomet. Chem. 692, 5091–5096. CrossRef CAS Google Scholar
Changamu, E. O., Friedrich, H. B. & Rademeyer, M. (2007). J. Organomet. Chem. 692, 2456–2472. CrossRef CAS Google Scholar
Farrugia, L. J. (1997). J. Appl. Cryst. 30, 565. CrossRef IUCr Journals Google Scholar
Farrugia, L. J. (1999). J. Appl. Cryst. 32, 837–838. CrossRef CAS IUCr Journals Google Scholar
Friedrich, H. B., Onani, M. O. & Rademeyer, M. (2005). Acta Cryst. E61, m144–m146. Web of Science CSD CrossRef IUCr Journals Google Scholar
M'thiruaine, C. M., Friedrich, H. B., Changamu, E. O. & Bala, M. D. (2011). Inorg. Chim. Acta, 366, 105–115. CAS Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar

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