In the title complex, [Cu(C 4 H 5 O 2 )(C 27 H 27 N 7 )](ClO 4 )Á-2C 3 H 7 NOÁ0.5H 2 O, the Cu II ion is five-coordinated by four N atoms from a tris(N-methylbenzimidazol-2-ylmethyl)amine ligand and one O atom from a 2-methacrylate ligand in a distorted trigonal-bipyramidal geometry with approximate molecular C 3 symmetry. A half-occupancy solvent water molecule forms weak O-HÁ Á ÁO hydrogen bonds and the atoms of the 2-methacrylate ligand are disordered over two sites with equal occupancy. Related literature For related literature, see: Allen et al. (1987); Youngme et al. (2007). Experimental Crystal data [Cu(C 4 H 5 O 2 )(C 27 H 27 N 7 )]-(ClO 4 )Á2C 3 H 7 NOÁ0.5H 2 O M r = 852.83 Triclinic, P1 a = 12.2004 (5) A b = 12.6825 (6) A c = 13.6436 (6) A = 88.703 (1) = 74.892 (1) = 78.197 (1) V = 1993.98 (15) A ˚3 Z = 2 Mo K radiation = 0.68 mm À1 T = 153 (2) K 0.29 Â 0.23 Â 0.21 mm Data collection Rigaku R-AXIS SPIDER diffractometer Absorption correction: multi-scan (ABSCOR; Higashi, 1995) T min = 0.828, T max = 0.871 16373 measured reflections 7382 independent reflections 5587 reflections with I > 2(I) R int = 0.044 Refinement R[F 2 > 2(F 2 )] = 0.056 wR(F 2 ) = 0.170 S = 1.11 7382 reflections 578 parameters 46 restraints H-atom parameters constrained Á max = 0.70 e A ˚À3 Á min = À0.76 e A ˚À3
Table 1
Hydrogen-bond geometry (A ˚, ).