catena-Poly[[(tetra-hydro-furan-κO)potas-sium]-di-μ-dimethyl-amido-κ(4) N:N-aluminium-di-μ-dimethyl-amido-κ(4) N:N-potassium-di-μ-dimethyl-amido-κ(4) N:N-aluminium-di-μ-dimethyl-amido-κ(4) N:N].

The title compound, [Al2K2(C2H6N)8(C4H8O)] n , formed during the sonochemical reaction between Al(NMe2)3 and sodium-potassium alloy in the presence of tetra-hydro-furan (THF). Its asymmetric unit has two inequivalent K(+) sites. One site is coordinated by a THF ligand, and crystallizes as a one-dimensional polymer with a backbone of catenated AlN2K rings. A twofold rotation axis bis-ects one K(+) site and the THF ligand; the second K(+) site is situated on an inversion centre, resulting in a planar four-coordination by N atoms. The latter symmetry operation generates the second half of the THF mol-ecule and fills out the coordination sphere of the potassium sites. The chains extend along the c-axis direction and zigzag at the THF-coordinated K(+) sites by an angle of 106.02 (5)°.

Related literature

Several (RR′N)4AlM (M = Li, Na) compounds that have catenated AlN2 M chains have been reported previously (Eisler & Chivers, 2006 ▶); Rings et al. 2000 ▶). The structure of tris­(dimethyl­amino)­aluminium is a mol­ecular dimer, see: Ouzounis et al. (1983 ▶). Heavily solvated tetra­amino­alanates tend to have separated cations instead of catenated chain structures, see: Hensen et al. (1999 ▶). For details of the synthesis, see: Ruff (1960 ▶); Ouzounis et al. (1983 ▶).

Experimental

Crystal data

[Al2K2(C2H6N)8(C4H8O)]

M = 278.44

Monoclinic,

a = 13.247 (4) Å

b = 12.075 (4) Å

c = 20.822 (7) Å

β = 90.979 (5)°

V = 3330.1 (19) Å3

Z = 8

Mo Kα radiation

μ = 0.36 mm−1

T = 173 K

0.74 × 0.57 × 0.42 mm

Data collection

Bruker SMART APEXII CCD diffractometer

Absorption correction: multi-scan (SADABS; Bruker, 2008 ▶) T min = 0.776, T max = 0.863

18795 measured reflections

4928 independent reflections

3986 reflections with I > 2σ(I)

R int = 0.023

Refinement

R[F 2 > 2σ(F 2)] = 0.036

wR(F 2) = 0.107

S = 1.03

4928 reflections

155 parameters

H-atom parameters constrained

Δρmax = 0.25 e Å−3

Δρmin = −0.30 e Å−3

Data collection: APEX2 (Bruker, 2008 ▶); cell refinement: SAINT (Bruker, 2008 ▶); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.

Click here for additional data file.

Crystal structure: contains datablock(s) I, global. DOI: 10.1107/S1600536813003553/nk2195sup1.cif

Click here for additional data file.

Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536813003553/nk2195Isup2.hkl

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

[Al2K2(C2H6N)8(C4H8O)]	F(000) = 1216
Mr = 556.88	Dx = 1.111 Mg m−3
Monoclinic, C2/c	Mo Kα radiation, λ = 0.71073 Å
a = 13.247 (4) Å	Cell parameters from 6485 reflections
b = 12.075 (4) Å	θ = 2.3–30.2°
c = 20.822 (7) Å	µ = 0.36 mm−1
β = 90.979 (5)°	T = 173 K
V = 3330.1 (19) Å3	Chunk, orange
Z = 4	0.74 × 0.57 × 0.42 mm

Bruker SMART APEXII CCD diffractometer	4928 independent reflections
Radiation source: fine-focus sealed tube	3986 reflections with I > 2σ(I)
Graphite monochromator	Rint = 0.023
ω scans	θmax = 30.9°, θmin = 2.0°
Absorption correction: multi-scan (SADABS; Bruker, 2008)	h = −18→18
Tmin = 0.776, Tmax = 0.863	k = −15→17
18795 measured reflections	l = −29→29

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)] = 0.036	Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.107	H-atom parameters constrained
S = 1.03	w = 1/[σ2(Fo2) + (0.0567P)2 + 0.9926P] where P = (Fo2 + 2Fc2)/3
4928 reflections	(Δ/σ)max = 0.001
155 parameters	Δρmax = 0.25 e Å−3
0 restraints	Δρmin = −0.30 e Å−3

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.

	x	y	z	Uiso*/Ueq
K1	0.5000	0.32471 (3)	0.7500	0.03918 (11)
K2	0.5000	0.0000	0.5000	0.07103 (19)
Al	0.52871 (2)	0.22259 (3)	0.595808 (16)	0.02748 (9)
O1S	0.5000	0.54941 (12)	0.7500	0.0520 (3)
N1	0.50523 (8)	0.23469 (9)	0.50846 (5)	0.0361 (2)
N2	0.60258 (8)	0.34150 (9)	0.62545 (5)	0.0374 (2)
N3	0.59582 (7)	0.09033 (8)	0.61187 (5)	0.0338 (2)
N4	0.40721 (7)	0.21492 (9)	0.63840 (5)	0.0358 (2)
C1S	0.57959 (13)	0.61739 (15)	0.77418 (9)	0.0614 (4)
H1SA	0.6445	0.5961	0.7547	0.074*
H1SB	0.5862	0.6096	0.8214	0.074*
C2S	0.55312 (18)	0.73207 (19)	0.75688 (16)	0.1055 (10)
H2SA	0.5692	0.7829	0.7929	0.127*
H2SB	0.5910	0.7561	0.7188	0.127*
C11	0.40625 (11)	0.24265 (14)	0.47861 (7)	0.0497 (3)
H11A	0.4061	0.2036	0.4374	0.075*
H11B	0.3893	0.3207	0.4715	0.075*
H11C	0.3562	0.2090	0.5067	0.075*
C12	0.58075 (12)	0.27839 (15)	0.46587 (7)	0.0543 (4)
H12A	0.5837	0.2323	0.4272	0.081*
H12B	0.6468	0.2781	0.4878	0.081*
H12C	0.5629	0.3544	0.4537	0.081*
C21	0.59360 (13)	0.44990 (12)	0.59569 (8)	0.0533 (4)
H21A	0.6505	0.4617	0.5670	0.080*
H21B	0.5942	0.5071	0.6291	0.080*
H21C	0.5301	0.4540	0.5709	0.080*
C22	0.69696 (10)	0.33235 (13)	0.66072 (8)	0.0501 (3)
H22A	0.7531	0.3352	0.6307	0.075*
H22B	0.6988	0.2619	0.6841	0.075*
H22C	0.7030	0.3937	0.6913	0.075*
C31	0.68988 (10)	0.06920 (12)	0.57922 (7)	0.0474 (3)
H31A	0.6982	−0.0108	0.5731	0.057*
H31B	0.7463	0.0979	0.6052	0.057*
H31C	0.6885	0.1061	0.5373	0.057*
C32	0.59875 (13)	0.03606 (14)	0.67380 (7)	0.0561 (4)
H32A	0.6057	−0.0440	0.6677	0.084*
H32B	0.5361	0.0516	0.6965	0.084*
H32C	0.6564	0.0639	0.6991	0.084*
C41	0.34632 (11)	0.11493 (15)	0.63898 (8)	0.0555 (4)
H41A	0.3036	0.1123	0.6001	0.083*
H41B	0.3036	0.1151	0.6769	0.083*
H41C	0.3906	0.0500	0.6403	0.083*
C42	0.34249 (10)	0.31184 (15)	0.63825 (8)	0.0526 (4)
H42A	0.2979	0.3102	0.6002	0.079*
H42B	0.3841	0.3789	0.6373	0.079*
H42C	0.3017	0.3119	0.6771	0.079*

	U11	U22	U33	U12	U13	U23
K1	0.0424 (2)	0.0394 (2)	0.03566 (19)	0.000	−0.00112 (14)	0.000
K2	0.1055 (4)	0.0351 (2)	0.0709 (3)	0.0086 (3)	−0.0445 (3)	−0.0172 (2)
Al	0.02602 (16)	0.02410 (17)	0.03224 (17)	−0.00161 (12)	−0.00140 (12)	−0.00017 (12)
O1S	0.0558 (8)	0.0413 (8)	0.0586 (9)	0.000	−0.0084 (7)	0.000
N1	0.0381 (5)	0.0367 (6)	0.0335 (5)	0.0005 (4)	−0.0032 (4)	0.0051 (4)
N2	0.0341 (5)	0.0293 (5)	0.0488 (6)	−0.0068 (4)	−0.0032 (4)	−0.0014 (4)
N3	0.0348 (5)	0.0297 (5)	0.0369 (5)	0.0023 (4)	−0.0034 (4)	0.0035 (4)
N4	0.0268 (4)	0.0388 (6)	0.0418 (5)	−0.0039 (4)	0.0001 (4)	−0.0010 (4)
C1S	0.0516 (8)	0.0589 (10)	0.0732 (11)	−0.0001 (7)	−0.0148 (7)	−0.0021 (8)
C2S	0.0924 (17)	0.0547 (13)	0.167 (3)	−0.0215 (11)	−0.0594 (17)	0.0213 (14)
C11	0.0500 (8)	0.0513 (8)	0.0473 (7)	0.0007 (6)	−0.0152 (6)	0.0074 (6)
C12	0.0571 (9)	0.0629 (10)	0.0433 (7)	0.0029 (7)	0.0091 (6)	0.0151 (7)
C21	0.0656 (9)	0.0294 (7)	0.0650 (9)	−0.0119 (6)	0.0007 (7)	0.0004 (6)
C22	0.0353 (6)	0.0531 (9)	0.0615 (9)	−0.0094 (6)	−0.0054 (6)	−0.0121 (7)
C31	0.0379 (6)	0.0431 (8)	0.0611 (8)	0.0102 (6)	−0.0014 (6)	0.0014 (6)
C32	0.0657 (10)	0.0530 (9)	0.0494 (8)	0.0089 (7)	−0.0050 (7)	0.0171 (7)
C41	0.0431 (7)	0.0640 (10)	0.0593 (9)	−0.0239 (7)	0.0007 (6)	0.0040 (7)
C42	0.0341 (6)	0.0654 (10)	0.0581 (9)	0.0127 (6)	−0.0050 (6)	−0.0092 (7)

K1—O1S	2.7133 (18)	N3—C31	1.4521 (17)
K1—N4i	2.9274 (12)	N4—C42	1.4506 (18)
K1—N4	2.9275 (12)	N4—C41	1.4522 (18)
K1—N2	2.9553 (14)	C1S—C2S	1.472 (3)
K1—N2i	2.9553 (14)	C1S—H1SA	0.9900
K1—C42i	3.1026 (16)	C1S—H1SB	0.9900
K1—C42	3.1026 (16)	C2S—C2Si	1.431 (4)
K1—C22i	3.2306 (17)	C2S—H2SA	0.9900
K1—C22	3.2307 (17)	C2S—H2SB	0.9900
K1—Ali	3.4662 (11)	C11—H11A	0.9800
K1—Al	3.4662 (11)	C11—H11B	0.9800
K2—N1	2.8402 (14)	C11—H11C	0.9800
K2—N1ii	2.8402 (14)	C12—H12A	0.9800
K2—N3ii	2.8506 (12)	C12—H12B	0.9800
K2—N3	2.8506 (12)	C12—H12C	0.9800
K2—C31ii	3.0990 (16)	C21—H21A	0.9800
K2—C31	3.0991 (16)	C21—H21B	0.9800
K2—C11ii	3.2103 (18)	C21—H21C	0.9800
K2—C11	3.2103 (18)	C22—H22A	0.9800
K2—Alii	3.3649 (9)	C22—H22B	0.9800
K2—Al	3.3649 (9)	C22—H22C	0.9800
K2—H31A	3.0156	C31—H31A	0.9807
K2—H31C	2.9013	C31—H31B	0.9791
Al—N2	1.8383 (11)	C31—H31C	0.9800
Al—N1	1.8457 (12)	C32—H32A	0.9800
Al—N4	1.8533 (11)	C32—H32B	0.9800
Al—N3	1.8554 (11)	C32—H32C	0.9800
O1S—C1S	1.4215 (19)	C41—H41A	0.9800
O1S—C1Si	1.4215 (19)	C41—H41B	0.9800
N1—C11	1.4446 (17)	C41—H41C	0.9800
N1—C12	1.4478 (17)	C42—H42A	0.9800
N2—C22	1.4433 (17)	C42—H42B	0.9800
N2—C21	1.4522 (18)	C42—H42C	0.9800
N3—C32	1.4464 (17)
O1S—K1—N4i	116.93 (2)	H31A—K2—H31C	31.3
O1S—K1—N4	116.93 (2)	N2—Al—N1	110.41 (5)
N4i—K1—N4	126.15 (5)	N2—Al—N4	109.88 (5)
O1S—K1—N2	86.06 (2)	N1—Al—N4	110.02 (5)
N4i—K1—N2	122.31 (3)	N2—Al—N3	111.17 (5)
N4—K1—N2	61.81 (3)	N1—Al—N3	108.54 (5)
O1S—K1—N2i	86.07 (2)	N4—Al—N3	106.74 (5)
N4i—K1—N2i	61.81 (3)	N2—Al—K2	151.29 (4)
N4—K1—N2i	122.31 (3)	N1—Al—K2	57.56 (4)
N2—K1—N2i	172.13 (4)	N4—Al—K2	98.83 (4)
O1S—K1—C42i	92.87 (3)	N3—Al—K2	57.88 (4)
N4i—K1—C42i	27.65 (4)	N2—Al—K1	58.49 (4)
N4—K1—C42i	147.19 (4)	N1—Al—K1	149.91 (4)
N2—K1—C42i	110.37 (4)	N4—Al—K1	57.63 (3)
N2i—K1—C42i	70.05 (4)	N3—Al—K1	101.48 (4)
O1S—K1—C42	92.87 (3)	K2—Al—K1	145.105 (13)
N4i—K1—C42	147.19 (4)	C1S—O1S—C1Si	109.46 (18)
N4—K1—C42	27.64 (4)	C1S—O1S—K1	125.27 (9)
N2—K1—C42	70.05 (4)	C1Si—O1S—K1	125.27 (9)
N2i—K1—C42	110.37 (4)	C11—N1—C12	110.11 (11)
C42i—K1—C42	174.26 (7)	C11—N1—Al	124.45 (9)
O1S—K1—C22i	88.36 (3)	C12—N1—Al	121.72 (9)
N4i—K1—C22i	83.60 (4)	C11—N1—K2	91.07 (8)
N4—K1—C22i	97.90 (4)	C12—N1—K2	110.00 (9)
N2—K1—C22i	152.99 (3)	Al—N1—K2	89.18 (4)
N2i—K1—C22i	26.51 (3)	C22—N2—C21	110.49 (11)
C42i—K1—C22i	96.27 (4)	C22—N2—Al	124.23 (9)
C42—K1—C22i	83.89 (5)	C21—N2—Al	121.43 (9)
O1S—K1—C22	88.36 (3)	C22—N2—K1	87.45 (8)
N4i—K1—C22	97.90 (4)	C21—N2—K1	113.62 (9)
N4—K1—C22	83.60 (4)	Al—N2—K1	89.48 (4)
N2—K1—C22	26.51 (3)	C32—N3—C31	109.13 (11)
N2i—K1—C22	153.00 (3)	C32—N3—Al	123.79 (10)
C42i—K1—C22	83.89 (5)	C31—N3—Al	118.63 (9)
C42—K1—C22	96.27 (5)	C32—N3—K2	124.05 (9)
C22i—K1—C22	176.73 (6)	C31—N3—K2	85.63 (8)
O1S—K1—Ali	110.839 (12)	Al—N3—K2	88.67 (4)
N4i—K1—Ali	32.32 (2)	C42—N4—C41	110.02 (12)
N4—K1—Ali	121.53 (3)	C42—N4—Al	118.47 (10)
N2—K1—Ali	153.72 (2)	C41—N4—Al	122.18 (10)
N2i—K1—Ali	32.03 (2)	C42—N4—K1	82.91 (8)
C42i—K1—Ali	50.99 (3)	C41—N4—K1	126.56 (9)
C42—K1—Ali	126.43 (4)	Al—N4—K1	90.05 (4)
C22i—K1—Ali	51.29 (3)	O1S—C1S—C2S	106.52 (14)
C22—K1—Ali	130.21 (3)	O1S—C1S—H1SA	110.4
O1S—K1—Al	110.838 (12)	C2S—C1S—H1SA	110.4
N4i—K1—Al	121.53 (3)	O1S—C1S—H1SB	110.4
N4—K1—Al	32.32 (2)	C2S—C1S—H1SB	110.4
N2—K1—Al	32.03 (2)	H1SA—C1S—H1SB	108.6
N2i—K1—Al	153.72 (3)	C2Si—C2S—C1S	106.16 (14)
C42i—K1—Al	126.43 (4)	C2Si—C2S—H2SA	110.5
C42—K1—Al	50.99 (3)	C1S—C2S—H2SA	110.5
C22i—K1—Al	130.21 (3)	C2Si—C2S—H2SB	110.5
C22—K1—Al	51.29 (3)	C1S—C2S—H2SB	110.5
Ali—K1—Al	138.32 (2)	H2SA—C2S—H2SB	108.7
N1—K2—N1ii	180.0	N1—C11—K2	62.19 (7)
N1—K2—N3ii	116.27 (3)	N1—C11—H11A	109.5
N1ii—K2—N3ii	63.73 (3)	K2—C11—H11A	71.2
N1—K2—N3	63.73 (3)	N1—C11—H11B	109.5
N1ii—K2—N3	116.26 (3)	K2—C11—H11B	170.5
N3ii—K2—N3	179.999 (1)	H11A—C11—H11B	109.5
N1—K2—C31ii	108.71 (3)	N1—C11—H11C	109.5
N1ii—K2—C31ii	71.29 (3)	K2—C11—H11C	78.6
N3ii—K2—C31ii	27.85 (3)	H11A—C11—H11C	109.5
N3—K2—C31ii	152.15 (3)	H11B—C11—H11C	109.5
N1—K2—C31	71.29 (3)	N1—C12—H12A	109.5
N1ii—K2—C31	108.71 (3)	N1—C12—H12B	109.5
N3ii—K2—C31	152.15 (3)	H12A—C12—H12B	109.5
N3—K2—C31	27.85 (3)	N1—C12—H12C	109.5
C31ii—K2—C31	180.0	H12A—C12—H12C	109.5
N1—K2—C11ii	153.26 (3)	H12B—C12—H12C	109.5
N1ii—K2—C11ii	26.74 (3)	N2—C21—H21A	109.5
N3ii—K2—C11ii	85.98 (4)	N2—C21—H21B	109.5
N3—K2—C11ii	94.02 (4)	H21A—C21—H21B	109.5
C31ii—K2—C11ii	97.83 (4)	N2—C21—H21C	109.5
C31—K2—C11ii	82.17 (4)	H21A—C21—H21C	109.5
N1—K2—C11	26.74 (3)	H21B—C21—H21C	109.5
N1ii—K2—C11	153.26 (3)	N2—C22—K1	66.04 (7)
N3ii—K2—C11	94.02 (4)	N2—C22—H22A	109.5
N3—K2—C11	85.98 (4)	K1—C22—H22A	175.5
C31ii—K2—C11	82.17 (4)	N2—C22—H22B	109.5
C31—K2—C11	97.83 (4)	K1—C22—H22B	72.8
C11ii—K2—C11	180.0	H22A—C22—H22B	109.5
N1—K2—Alii	146.74 (2)	N2—C22—H22C	109.5
N1ii—K2—Alii	33.26 (2)	K1—C22—H22C	72.9
N3ii—K2—Alii	33.45 (2)	H22A—C22—H22C	109.5
N3—K2—Alii	146.55 (2)	H22B—C22—H22C	109.5
C31ii—K2—Alii	52.16 (3)	N3—C31—K2	66.52 (7)
C31—K2—Alii	127.84 (3)	N3—C31—H31A	109.5
C11ii—K2—Alii	52.61 (3)	K2—C31—H31A	76.0
C11—K2—Alii	127.39 (3)	N3—C31—H31B	109.4
N1—K2—Al	33.26 (2)	K2—C31—H31B	174.3
N1ii—K2—Al	146.74 (2)	H31A—C31—H31B	109.5
N3ii—K2—Al	146.55 (2)	N3—C31—H31C	109.5
N3—K2—Al	33.45 (2)	K2—C31—H31C	69.3
C31ii—K2—Al	127.84 (3)	H31A—C31—H31C	109.4
C31—K2—Al	52.16 (3)	H31B—C31—H31C	109.4
C11ii—K2—Al	127.39 (3)	N3—C32—H32A	109.5
C11—K2—Al	52.61 (3)	N3—C32—H32B	109.5
Alii—K2—Al	180.0	H32A—C32—H32B	109.5
N1—K2—H31A	89.5	N3—C32—H32C	109.5
N1ii—K2—H31A	90.5	H32A—C32—H32C	109.5
N3ii—K2—H31A	140.2	H32B—C32—H32C	109.5
N3—K2—H31A	39.8	N4—C41—H41A	109.5
C31ii—K2—H31A	161.6	N4—C41—H41B	109.5
C31—K2—H31A	18.4	H41A—C41—H41B	109.5
C11ii—K2—H31A	63.8	N4—C41—H41C	109.5
C11—K2—H31A	116.2	H41A—C41—H41C	109.5
Alii—K2—H31A	110.7	H41B—C41—H41C	109.5
Al—K2—H31A	69.3	N4—C42—K1	69.45 (7)
N1—K2—H31C	61.5	N4—C42—H42A	109.5
N1ii—K2—H31C	118.5	K1—C42—H42A	174.5
N3ii—K2—H31C	139.2	N4—C42—H42B	109.5
N3—K2—H31C	40.8	K1—C42—H42B	66.5
C31ii—K2—H31C	161.6	H42A—C42—H42B	109.5
C31—K2—H31C	18.4	N4—C42—H42C	109.5
C11ii—K2—H31C	92.1	K1—C42—H42C	75.8
C11—K2—H31C	87.9	H42A—C42—H42C	109.5
Alii—K2—H31C	126.8	H42B—C42—H42C	109.5
Al—K2—H31C	53.2
N1—K2—Al—N2	−72.54 (9)	K1—Al—N2—C21	−117.65 (12)
N1ii—K2—Al—N2	107.46 (9)	N1—Al—N2—K1	148.73 (4)
N3ii—K2—Al—N2	−104.99 (9)	N4—Al—N2—K1	27.20 (5)
N3—K2—Al—N2	75.01 (9)	N3—Al—N2—K1	−90.74 (5)
C31ii—K2—Al—N2	−136.20 (9)	K2—Al—N2—K1	−152.06 (5)
C31—K2—Al—N2	43.80 (9)	O1S—K1—N2—C22	94.23 (7)
C11ii—K2—Al—N2	79.62 (9)	N4i—K1—N2—C22	−25.34 (9)
C11—K2—Al—N2	−100.37 (9)	N4—K1—N2—C22	−142.28 (9)
Alii—K2—Al—N2	−90.4 (6)	N2i—K1—N2—C22	94.24 (8)
N1ii—K2—Al—N1	180.0	C42i—K1—N2—C22	2.63 (9)
N3ii—K2—Al—N1	−32.45 (6)	C42—K1—N2—C22	−171.27 (9)
N3—K2—Al—N1	147.55 (6)	C22i—K1—N2—C22	172.81 (13)
C31ii—K2—Al—N1	−63.66 (5)	Ali—K1—N2—C22	−37.53 (10)
C31—K2—Al—N1	116.34 (5)	Al—K1—N2—C22	−124.29 (9)
C11ii—K2—Al—N1	152.16 (5)	O1S—K1—N2—C21	−17.06 (9)
C11—K2—Al—N1	−27.84 (5)	N4i—K1—N2—C21	−136.63 (9)
Alii—K2—Al—N1	−17.8 (6)	N4—K1—N2—C21	106.44 (9)
N1—K2—Al—N4	108.17 (5)	N2i—K1—N2—C21	−17.05 (9)
N1ii—K2—Al—N4	−71.83 (5)	C42i—K1—N2—C21	−108.66 (9)
N3ii—K2—Al—N4	75.72 (5)	C42—K1—N2—C21	77.44 (9)
N3—K2—Al—N4	−104.28 (5)	C22i—K1—N2—C21	61.52 (13)
C31ii—K2—Al—N4	44.51 (5)	C22—K1—N2—C21	−111.29 (12)
C31—K2—Al—N4	−135.49 (5)	Ali—K1—N2—C21	−148.81 (8)
C11ii—K2—Al—N4	−99.67 (5)	Al—K1—N2—C21	124.42 (10)
C11—K2—Al—N4	80.33 (5)	O1S—K1—N2—Al	−141.47 (4)
Alii—K2—Al—N4	90.3 (6)	N4i—K1—N2—Al	98.95 (5)
N1—K2—Al—N3	−147.55 (6)	N4—K1—N2—Al	−17.98 (3)
N1ii—K2—Al—N3	32.45 (6)	N2i—K1—N2—Al	−141.47 (4)
N3ii—K2—Al—N3	179.998 (1)	C42i—K1—N2—Al	126.92 (5)
C31ii—K2—Al—N3	148.79 (5)	C42—K1—N2—Al	−46.98 (5)
C31—K2—Al—N3	−31.21 (5)	C22i—K1—N2—Al	−62.89 (10)
C11ii—K2—Al—N3	4.61 (5)	C22—K1—N2—Al	124.29 (9)
C11—K2—Al—N3	−175.39 (5)	Ali—K1—N2—Al	86.77 (6)
Alii—K2—Al—N3	−165.4 (5)	N2—Al—N3—C32	78.67 (12)
N1—K2—Al—K1	151.74 (5)	N1—Al—N3—C32	−159.71 (11)
N1ii—K2—Al—K1	−28.26 (5)	N4—Al—N3—C32	−41.15 (12)
N3ii—K2—Al—K1	119.29 (4)	K2—Al—N3—C32	−131.18 (12)
N3—K2—Al—K1	−60.71 (4)	K1—Al—N3—C32	18.22 (11)
C31ii—K2—Al—K1	88.08 (4)	N2—Al—N3—C31	−65.87 (11)
C31—K2—Al—K1	−91.92 (4)	N1—Al—N3—C31	55.76 (10)
C11ii—K2—Al—K1	−56.10 (4)	N4—Al—N3—C31	174.31 (9)
C11—K2—Al—K1	123.91 (4)	K2—Al—N3—C31	84.29 (10)
Alii—K2—Al—K1	133.9 (5)	K1—Al—N3—C31	−126.31 (9)
O1S—K1—Al—N2	41.68 (4)	N2—Al—N3—K2	−150.16 (4)
N4i—K1—Al—N2	−101.64 (5)	N1—Al—N3—K2	−28.53 (5)
N4—K1—Al—N2	149.41 (6)	N4—Al—N3—K2	90.02 (5)
N2i—K1—Al—N2	168.89 (6)	K1—Al—N3—K2	149.395 (19)
C42i—K1—Al—N2	−68.66 (6)	N1—K2—N3—C32	150.13 (11)
C42—K1—Al—N2	117.83 (6)	N1ii—K2—N3—C32	−29.87 (11)
C22i—K1—Al—N2	148.04 (6)	N3ii—K2—N3—C32	10 (12)
C22—K1—Al—N2	−28.19 (5)	C31ii—K2—N3—C32	69.82 (13)
Ali—K1—Al—N2	−138.33 (4)	C31—K2—N3—C32	−110.18 (13)
O1S—K1—Al—N1	−34.33 (7)	C11ii—K2—N3—C32	−45.36 (11)
N4i—K1—Al—N1	−177.64 (7)	C11—K2—N3—C32	134.65 (11)
N4—K1—Al—N1	73.41 (8)	Alii—K2—N3—C32	−49.03 (12)
N2—K1—Al—N1	−76.00 (8)	Al—K2—N3—C32	130.97 (12)
N2i—K1—Al—N1	92.89 (9)	N1—K2—N3—C31	−99.69 (8)
C42i—K1—Al—N1	−144.66 (8)	N1ii—K2—N3—C31	80.31 (8)
C42—K1—Al—N1	41.82 (8)	N3ii—K2—N3—C31	121 (12)
C22i—K1—Al—N1	72.04 (8)	C31ii—K2—N3—C31	180.0
C22—K1—Al—N1	−104.20 (8)	C11ii—K2—N3—C31	64.83 (8)
Ali—K1—Al—N1	145.67 (7)	C11—K2—N3—C31	−115.17 (8)
O1S—K1—Al—N4	−107.73 (4)	Alii—K2—N3—C31	61.15 (8)
N4i—K1—Al—N4	108.95 (6)	Al—K2—N3—C31	−118.84 (8)
N2—K1—Al—N4	−149.41 (6)	N1—K2—N3—Al	19.16 (3)
N2i—K1—Al—N4	19.48 (7)	N1ii—K2—N3—Al	−160.84 (3)
C42i—K1—Al—N4	141.93 (6)	N3ii—K2—N3—Al	−121 (12)
C42—K1—Al—N4	−31.58 (6)	C31ii—K2—N3—Al	−61.15 (8)
C22i—K1—Al—N4	−1.37 (6)	C31—K2—N3—Al	118.84 (8)
C22—K1—Al—N4	−177.60 (6)	C11ii—K2—N3—Al	−176.33 (4)
Ali—K1—Al—N4	72.26 (4)	C11—K2—N3—Al	3.67 (4)
O1S—K1—Al—N3	149.60 (3)	Alii—K2—N3—Al	180.0
N4i—K1—Al—N3	6.28 (4)	N2—Al—N4—C42	54.48 (11)
N4—K1—Al—N3	−102.67 (5)	N1—Al—N4—C42	−67.29 (11)
N2—K1—Al—N3	107.92 (6)	N3—Al—N4—C42	175.13 (9)
N2i—K1—Al—N3	−83.18 (6)	K2—Al—N4—C42	−125.88 (9)
C42i—K1—Al—N3	39.26 (5)	K1—Al—N4—C42	81.96 (10)
C42—K1—Al—N3	−134.25 (6)	N2—Al—N4—C41	−162.25 (10)
C22i—K1—Al—N3	−104.04 (5)	N1—Al—N4—C41	75.98 (12)
C22—K1—Al—N3	79.73 (5)	N3—Al—N4—C41	−41.60 (12)
Ali—K1—Al—N3	−30.40 (3)	K2—Al—N4—C41	17.39 (11)
O1S—K1—Al—K2	−161.489 (17)	K1—Al—N4—C41	−134.78 (12)
N4i—K1—Al—K2	55.20 (4)	N2—Al—N4—K1	−27.47 (5)
N4—K1—Al—K2	−53.75 (4)	N1—Al—N4—K1	−149.24 (4)
N2—K1—Al—K2	156.84 (5)	N3—Al—N4—K1	93.17 (5)
N2i—K1—Al—K2	−34.27 (6)	K2—Al—N4—K1	152.17 (2)
C42i—K1—Al—K2	88.18 (4)	O1S—K1—N4—C42	−31.94 (8)
C42—K1—Al—K2	−85.34 (5)	N4i—K1—N4—C42	148.06 (8)
C22i—K1—Al—K2	−55.12 (4)	N2—K1—N4—C42	−100.87 (9)
C22—K1—Al—K2	128.64 (4)	N2i—K1—N4—C42	71.36 (9)
Ali—K1—Al—K2	18.510 (17)	C42i—K1—N4—C42	175.00 (6)
N4i—K1—O1S—C1S	37.19 (10)	C22i—K1—N4—C42	60.24 (8)
N4—K1—O1S—C1S	−142.81 (10)	C22—K1—N4—C42	−116.82 (9)
N2—K1—O1S—C1S	−87.28 (10)	Ali—K1—N4—C42	109.28 (8)
N2i—K1—O1S—C1S	92.72 (10)	Al—K1—N4—C42	−118.70 (10)
C42i—K1—O1S—C1S	22.96 (10)	O1S—K1—N4—C41	−141.66 (11)
C42—K1—O1S—C1S	−157.04 (10)	N4i—K1—N4—C41	38.34 (11)
C22i—K1—O1S—C1S	119.16 (10)	N2—K1—N4—C41	149.41 (12)
C22—K1—O1S—C1S	−60.84 (10)	N2i—K1—N4—C41	−38.35 (12)
Ali—K1—O1S—C1S	72.02 (10)	C42i—K1—N4—C41	65.28 (13)
Al—K1—O1S—C1S	−107.98 (10)	C42—K1—N4—C41	−109.71 (14)
N4i—K1—O1S—C1Si	−142.81 (10)	C22i—K1—N4—C41	−49.47 (12)
N4—K1—O1S—C1Si	37.19 (10)	C22—K1—N4—C41	133.46 (12)
N2—K1—O1S—C1Si	92.72 (10)	Ali—K1—N4—C41	−0.43 (12)
N2i—K1—O1S—C1Si	−87.28 (10)	Al—K1—N4—C41	131.58 (13)
C42i—K1—O1S—C1Si	−157.04 (10)	O1S—K1—N4—Al	86.76 (4)
C42—K1—O1S—C1Si	22.96 (10)	N4i—K1—N4—Al	−93.24 (4)
C22i—K1—O1S—C1Si	−60.84 (10)	N2—K1—N4—Al	17.83 (3)
C22—K1—O1S—C1Si	119.16 (10)	N2i—K1—N4—Al	−169.94 (4)
Ali—K1—O1S—C1Si	−107.98 (10)	C42i—K1—N4—Al	−66.30 (8)
Al—K1—O1S—C1Si	72.02 (10)	C42—K1—N4—Al	118.70 (9)
N2—Al—N1—C11	−118.54 (11)	C22i—K1—N4—Al	178.95 (4)
N4—Al—N1—C11	2.91 (13)	C22—K1—N4—Al	1.88 (5)
N3—Al—N1—C11	119.37 (11)	Ali—K1—N4—Al	−132.01 (3)
K2—Al—N1—C11	90.73 (11)	C1Si—O1S—C1S—C2S	−7.13 (16)
K1—Al—N1—C11	−56.57 (15)	K1—O1S—C1S—C2S	172.87 (16)
N2—Al—N1—C12	37.57 (12)	O1S—C1S—C2S—C2Si	19.0 (4)
N4—Al—N1—C12	159.02 (11)	C12—N1—C11—K2	111.78 (11)
N3—Al—N1—C12	−84.52 (12)	Al—N1—C11—K2	−89.74 (9)
K2—Al—N1—C12	−113.16 (12)	N1ii—K2—C11—N1	180.0
K1—Al—N1—C12	99.54 (12)	N3ii—K2—C11—N1	−147.85 (8)
N2—Al—N1—K2	150.73 (4)	N3—K2—C11—N1	32.15 (8)
N4—Al—N1—K2	−87.82 (5)	C31ii—K2—C11—N1	−173.11 (8)
N3—Al—N1—K2	28.64 (5)	C31—K2—C11—N1	6.88 (8)
K1—Al—N1—K2	−147.30 (5)	C11ii—K2—C11—N1	−88 (10)
N1ii—K2—N1—C11	−116 (15)	Alii—K2—C11—N1	−145.30 (6)
N3ii—K2—N1—C11	36.29 (8)	Al—K2—C11—N1	34.70 (6)
N3—K2—N1—C11	−143.71 (8)	C21—N2—C22—K1	114.31 (10)
C31ii—K2—N1—C11	7.20 (9)	Al—N2—C22—K1	−87.64 (9)
C31—K2—N1—C11	−172.80 (9)	O1S—K1—C22—N2	−84.46 (7)
C11ii—K2—N1—C11	180.0	N4i—K1—C22—N2	158.58 (7)
Alii—K2—N1—C11	55.55 (9)	N4—K1—C22—N2	32.87 (7)
Al—K2—N1—C11	−124.45 (9)	N2i—K1—C22—N2	−162.50 (10)
N1ii—K2—N1—C12	132 (15)	C42i—K1—C22—N2	−177.52 (8)
N3ii—K2—N1—C12	−75.59 (9)	C42—K1—C22—N2	8.25 (8)
N3—K2—N1—C12	104.41 (9)	C22i—K1—C22—N2	−84.45 (7)
C31ii—K2—N1—C12	−104.68 (9)	Ali—K1—C22—N2	159.32 (6)
C31—K2—N1—C12	75.32 (9)	Al—K1—C22—N2	34.16 (6)
C11ii—K2—N1—C12	68.11 (12)	C32—N3—C31—K2	124.60 (11)
C11—K2—N1—C12	−111.88 (12)	Al—N3—C31—K2	−86.09 (7)
Alii—K2—N1—C12	−56.33 (10)	N1—K2—C31—N3	68.95 (7)
Al—K2—N1—C12	123.67 (10)	N1ii—K2—C31—N3	−111.05 (7)
N1ii—K2—N1—Al	8 (15)	N3ii—K2—C31—N3	180.0
N3ii—K2—N1—Al	160.74 (3)	C31ii—K2—C31—N3	167 (13)
N3—K2—N1—Al	−19.26 (3)	C11ii—K2—C31—N3	−114.31 (8)
C31ii—K2—N1—Al	131.65 (4)	C11—K2—C31—N3	65.69 (8)
C31—K2—N1—Al	−48.35 (4)	Alii—K2—C31—N3	−142.31 (6)
C11ii—K2—N1—Al	−55.56 (9)	Al—K2—C31—N3	37.69 (6)
C11—K2—N1—Al	124.45 (9)	C41—N4—C42—K1	126.41 (10)
Alii—K2—N1—Al	180.0	Al—N4—C42—K1	−86.19 (7)
N1—Al—N2—C22	−124.71 (11)	O1S—K1—C42—N4	151.82 (7)
N4—Al—N2—C22	113.76 (11)	N4i—K1—C42—N4	−52.04 (12)
N3—Al—N2—C22	−4.18 (12)	N2—K1—C42—N4	67.05 (7)
K2—Al—N2—C22	−65.50 (15)	N2i—K1—C42—N4	−121.32 (7)
K1—Al—N2—C22	86.56 (11)	C42i—K1—C42—N4	−28.18 (8)
N1—Al—N2—C21	31.07 (12)	C22i—K1—C42—N4	−120.14 (8)
N4—Al—N2—C21	−90.46 (12)	C22—K1—C42—N4	63.15 (8)
N3—Al—N2—C21	151.60 (10)	Ali—K1—C42—N4	−89.52 (8)
K2—Al—N2—C21	90.28 (13)	Al—K1—C42—N4	37.12 (6)