Poly[dimethyl-ammonium [tris-(μ(2)-formato-κO:O')cadmate(II)]].

In the coordination polymer, {(C(2)H(8)N)[Cd(CHO(2))(3)]}(n), the Cd(II) atom lies on a special position of site symmetry in an octa-hedron of O atoms. The formate unit bridges the metal atoms, generating a three-dimensional polyanionic framework. The disordered cations occupy the cavities within the framework, and are N-H⋯O hydrogen-bonded to the framework.

Related literature

For the tris­(formato)zincate cation, see; Fortier & Creber (1985 ▶); Marsh (1986 ▶). Tris(formato)cadmate is not isotypic to the aforementioned Zn structures.

Experimental

Crystal data

(C2H8N)[Cd(CHO2)3]

M = 293.55

Trigonal,

a = 8.5121 (4) Å

c = 23.0022 (9) Å

V = 1443.36 (9) Å3

Z = 6

Mo Kα radiation

μ = 2.27 mm−1

T = 293 K

0.22 × 0.19 × 0.15 mm

Data collection

Rigaku R-AXIS RAPID diffractometer

Absorption correction: multi-scan (ABSCOR; Higashi, 1995 ▶) T min = 0.635, T max = 0.727

4250 measured reflections

370 independent reflections

352 reflections with I > 2σ(I)

R int = 0.024

Refinement

R[F 2 > 2σ(F 2)] = 0.022

wR(F 2) = 0.055

S = 1.09

370 reflections

33 parameters

9 restraints

H-atom parameters constrained

Δρmax = 0.73 e Å−3

Δρmin = −0.36 e Å−3

Data collection: RAPID-AUTO (Rigaku, 1998 ▶); cell refinement: RAPID-AUTO; data reduction: CrystalStructure (Rigaku/MSC, 2002 ▶); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: X-SEED (Barbour, 2001 ▶); software used to prepare material for publication: publCIF (Westrip, 2010 ▶).

Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536810046830/hg2747sup1.cif

Structure factors: contains datablocks I. DOI: 10.1107/S1600536810046830/hg2747Isup2.hkl

Additional supplementary materials: crystallographic information; 3D view; checkCIF report

(C2H8N)[Cd(CHO2)3]	Dx = 2.026 Mg m−3
Mr = 293.55	Mo Kα radiation, λ = 0.71073 Å
Trigonal, R3c	Cell parameters from 3921 reflections
Hall symbol: -R 3 2" c	θ = 3.3–37.5°
a = 8.5121 (4) Å	µ = 2.27 mm−1
c = 23.0022 (9) Å	T = 293 K
V = 1443.36 (9) Å3	Prism, colorless
Z = 6	0.22 × 0.19 × 0.15 mm
F(000) = 864

Rigaku R-AXIS RAPID diffractometer	370 independent reflections
Radiation source: fine-focus sealed tube	352 reflections with I > 2σ(I)
graphite	Rint = 0.024
Detector resolution: 10.000 pixels mm-1	θmax = 27.5°, θmin = 3.3°
ω scans	h = −11→11
Absorption correction: multi-scan (ABSCOR; Higashi, 1995)	k = −11→9
Tmin = 0.635, Tmax = 0.727	l = −29→29
4250 measured reflections

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)] = 0.022	Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.055	H-atom parameters constrained
S = 1.09	w = 1/[σ2(Fo2) + (0.0419P)2 + 0.5666P] where P = (Fo2 + 2Fc2)/3
370 reflections	(Δ/σ)max = 0.001
33 parameters	Δρmax = 0.73 e Å−3
9 restraints	Δρmin = −0.36 e Å−3

	x	y	z	Uiso*/Ueq	Occ. (<1)
Cd1	0.0000	0.0000	0.0000	0.02669 (17)
O1	0.23112 (15)	0.21016 (15)	0.05612 (5)	0.0452 (3)
C1	0.2265 (2)	0.3333	0.0833	0.0328 (4)
H1A	0.1173	0.3333	0.0833	0.039*
N1	0.578 (6)	0.252 (5)	0.0797 (17)	0.040 (4)	0.167
H1B	0.5788	0.1489	0.0798	0.048*	0.167
H1	0.4646	0.2277	0.0792	0.048*	0.167
C2	0.680 (5)	0.365 (4)	0.0282 (14)	0.041 (4)*	0.167
H2A	0.6061	0.3181	−0.0061	0.062*	0.167
H2B	0.7899	0.3619	0.0232	0.062*	0.167
H2C	0.7079	0.4881	0.0344	0.062*	0.167
C3	0.676 (7)	0.364 (4)	0.1320 (15)	0.041 (4)*	0.167
H3A	0.6210	0.2961	0.1667	0.062*	0.167
H3B	0.6687	0.4732	0.1322	0.062*	0.167
H3C	0.8010	0.3952	0.1306	0.062*	0.167

	U11	U22	U33	U12	U13	U23
Cd1	0.02630 (19)	0.02630 (19)	0.0275 (2)	0.01315 (10)	0.000	0.000
O1	0.0397 (6)	0.0420 (6)	0.0554 (7)	0.0215 (5)	−0.0121 (5)	−0.0206 (5)
C1	0.0301 (8)	0.0326 (11)	0.0367 (10)	0.0163 (5)	−0.0006 (4)	−0.0011 (8)
N1	0.040 (8)	0.028 (6)	0.055 (8)	0.019 (4)	−0.006 (7)	0.002 (7)

Cd1—O1i	2.2841 (10)	N1—C3	1.505 (10)
Cd1—O1	2.2841 (10)	N1—H1B	0.8800
Cd1—O1ii	2.2841 (10)	N1—H1	0.8800
Cd1—O1iii	2.2841 (10)	C2—H2A	0.9600
Cd1—O1iv	2.2841 (10)	C2—H2B	0.9600
Cd1—O1v	2.2841 (10)	C2—H2C	0.9600
O1—C1	1.2384 (14)	C3—H3A	0.9600
C1—O1vi	1.2383 (14)	C3—H3B	0.9600
C1—H1A	0.9300	C3—H3C	0.9600
N1—C2	1.499 (10)
O1i—Cd1—O1	180.00 (5)	C2—N1—C3	105.3 (8)
O1i—Cd1—O1ii	91.20 (4)	C2—N1—H1B	110.7
O1—Cd1—O1ii	88.80 (4)	C3—N1—H1B	110.7
O1i—Cd1—O1iii	91.20 (4)	C2—N1—H1	110.7
O1—Cd1—O1iii	88.80 (4)	C3—N1—H1	110.7
O1ii—Cd1—O1iii	91.20 (4)	H1B—N1—H1	108.8
O1i—Cd1—O1iv	88.80 (4)	N1—C2—H2A	109.5
O1—Cd1—O1iv	91.20 (4)	N1—C2—H2B	109.5
O1ii—Cd1—O1iv	88.80 (4)	H2A—C2—H2B	109.5
O1iii—Cd1—O1iv	180.00 (7)	N1—C2—H2C	109.5
O1i—Cd1—O1v	88.80 (4)	H2A—C2—H2C	109.5
O1—Cd1—O1v	91.20 (4)	H2B—C2—H2C	109.5
O1ii—Cd1—O1v	180.00 (5)	N1—C3—H3A	109.5
O1iii—Cd1—O1v	88.80 (4)	N1—C3—H3B	109.5
O1iv—Cd1—O1v	91.20 (4)	H3A—C3—H3B	109.5
C1—O1—Cd1	124.71 (11)	N1—C3—H3C	109.5
O1vi—C1—O1	125.90 (19)	H3A—C3—H3C	109.5
O1vi—C1—H1A	117.1	H3B—C3—H3C	109.5
O1—C1—H1A	117.1
O1ii—Cd1—O1—C1	151.34 (11)	O1v—Cd1—O1—C1	−28.66 (11)
O1iii—Cd1—O1—C1	60.11 (7)	Cd1—O1—C1—O1vi	−174.40 (11)
O1iv—Cd1—O1—C1	−119.89 (7)

D—H···A	D—H	H···A	D···A	D—H···A
N1—H1···O1	0.88	1.99	2.84 (7)	163

Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯O1	0.88	1.99	2.84 (7)	163