(4,4'-Bipyridine)dichloroman­ganese(II), a two-dimensional ­coordination polymer

The title compound, [MnCl₂(C₁₀H₈N₂)]_n, crystallizes with a two-dimensional network constructed from linear chains of edge-sharing MnCl₄ square-planar units cross-linked by bidentate 4,4'-bi­pyridine bridges. The Mn atom and the bipyridine moieties lie on sites with 222 crystallographic symmetry; the Cl atom lies on a twofold axis. The bi­pyridine mol­ecule is twisted about the central C-C bond by 33.5 (3)°.

Computing details

Data collection: XPRESS (MacScience, 1989); cell refinement: DENZO-SMN; data reduction: DENZO-SMN (Otwinowski & Minor, 1996); program(s) used to solve structure: SIR92 (Altomare et al., 1994); program(s) used to refine structure: CRYSTALS (Watkin et al., 1996); molecular graphics: ATOMS for Windows (Dowty, 1997); software used to prepare material for publication: CRYSTALS.

4,4'-bipyridinedichloromanganese(II)

Crystal data

[MnCl2(C10H8N2)]	Dx = 1.83 Mg m^−3
Mr = 282.04	Melting point: not measured K
Orthorhombic, Pban	Mo Kα radiation, λ = 0.71069 Å
Hall symbol: P 2ab 2b	Cell parameters from 2342 reflections
a = 11.641 (2) Å	θ = 0–26.6°
b = 11.955 (2) Å	µ = 1.73 mm^−1
c = 3.678 (1) Å	T = 150 K
V = 511.86 Å^3	Block, pale green
Z = 2	0.4 × 0.2 × 0.2 mm
F(000) = 282

Data collection

Enraf-Nonius DIP2000 image plate diffractometer	527 reflections with I > 0
Graphite monochromator	Rint = 0.024
ω scans	θmax = 26.6°, θmin = 0.0°
Absorption correction: multi-scan (DENZO-SMN; Otwinowski & Minor, 1996)	h = 0→14
Tmin = 0.501, Tmax = 0.708	k = 0→14
2342 measured reflections	l = 0→4
527 independent reflections

Refinement

Refinement on Fsq	Hydrogen site location: geometric
Least-squares matrix: full	All H-atom parameters refined
R[F^2 > 2σ(F^2)] = 0.033	Chebychev polynomial with 3 parameters (294, 403, 112; Carruthers & Watkin, 1979)
wR(F^2) = 0.038	(Δ/σ)max < 0.001
527 reflections	Δρmax = 0.38 e Å^−3
45 parameters	Δρmin = −0.79 e Å^−3
Primary atom site location: direct methods

Special details

Refinement. The structure was solved by direct methods and all non-H atoms were located. H atoms were subsequently located in difference Fourier maps and their coordinates and isotropic displacements parameters refined.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Ų)

	x	y	z	Uiso*/Ueq
Mn1	1/4	1/4	1/2	0.0126 (2)
Cl1	1/4	0.10195 (5)	0	0.0110 (2)
N1	0.05442 (16)	1/4	1/2	0.0116 (6)
C1	−0.00556 (11)	0.15809 (13)	0.5908 (4)	0.0137 (5)
C2	−0.12424 (11)	0.15419 (12)	0.5927 (5)	0.0131 (5)
C3	−0.18619 (19)	1/4	1/2	0.0103 (6)
H1	0.0390 (15)	0.0960 (14)	0.659 (5)	0.011 (4)*
H2	−0.1643 (16)	0.0874 (15)	0.662 (5)	0.016 (4)*

Atomic displacement parameters (Ų)

	U^11	U^22	U^33	U^12	U^13	U^23
Mn1	0.0092 (3)	0.0133 (3)	0.0154 (3)	0	0	0
Cl1	0.0112 (3)	0.0102 (3)	0.0115 (2)	0	−0.00081 (14)	0
N1	0.0079 (9)	0.0130 (9)	0.0140 (10)	0	0	−0.0024 (6)
C1	0.0101 (7)	0.0125 (7)	0.0185 (7)	0.0007 (5)	−0.0019 (6)	0.0005 (7)
C2	0.0106 (8)	0.0119 (7)	0.0167 (8)	−0.0011 (6)	−0.0010 (6)	0.0019 (7)
C3	0.0087 (11)	0.0147 (11)	0.0075 (11)	0	0	−0.0003 (6)

Geometric parameters (Å, º)

Mn1—Cl1	2.5523 (4)	N1—C1^iii	1.3441 (18)
Mn1—Cl1^i	2.5523 (4)	C1—C2	1.3823 (19)
Mn1—Cl1^ii	2.5523 (4)	C1—H1	0.94 (2)
Mn1—Cl1^iii	2.5523 (4)	C2—C3	1.3958 (18)
Mn1—N1	2.2768 (19)	C2—H2	0.96 (2)
Mn1—N1^iv	2.2768 (19)	C3—C3^v	1.486 (4)
N1—C1	1.3441 (18)
Cl1—Mn1—Cl1^i	92.194 (18)	N1—Mn1—N1^iv	180
Cl1—Mn1—Cl1^ii	87.806 (18)	Mn1^vi—Cl1—Mn1	92.194 (18)
Cl1^i—Mn1—Cl1^ii	180	Mn1—N1—C1	121.30 (9)
Cl1—Mn1—Cl1^iii	180	Mn1—N1—C1^iii	121.30 (9)
Cl1^i—Mn1—Cl1^iii	87.806 (18)	C1—N1—C1^iii	117.40 (18)
Cl1^ii—Mn1—Cl1^iii	92.194 (18)	N1—C1—C2	123.23 (14)
Cl1—Mn1—N1	90	N1—C1—H1	115.2 (10)
Cl1^i—Mn1—N1	90	C2—C1—H1	121.6 (12)
Cl1^ii—Mn1—N1	90	C1—C2—C3	119.18 (16)
Cl1^iii—Mn1—N1	90	C1—C2—H2	121.0 (11)
Cl1—Mn1—N1^iv	90	C3—C2—H2	119.8 (11)
Cl1^i—Mn1—N1^iv	90	C2—C3—C2^iii	117.7 (19)
Cl1^ii—Mn1—N1^iv	90	C2—C3—C3^v	121.1 (1)
Cl1^iii—Mn1—N1^iv	90	C2^iii—C3—C3^v	121.1 (1)

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