The title compound (13,27-dimethyl-3,6,9,17,20,23-hexaazatricyclo-[23.3.1.111,15]- triaconta-1(29),2,9,11,13,15(30),16,23,25,27-decaene-29,30-diol-N3,N6,N9,O29,O30)-bis(nitrato-O,O′)- holmium(III) nitrate hydrate has been prepared and characterized by elemental analysis, infrared spectra, and electrospray mass spectra. Its crystal and molecular structures were determined by X-ray diffraction methods. The crystal crystallizes in the monoclinic system, space group C2/c with a = 23.737(12), b = 14.237(7), c = 19.801(10) , β = 91.36(1)o, Mr = 831.57, V = 6690(6) 3, Z = 8, Dc = 1.651 g/cm3, F(000) = 3344, R = 0.0482 and wR = 0.0923. The holmium ion is located in one of the compartments of the macrocyclic ligand and presents a distorted tricapped trigonal prismatic coordination geometry. The macrocycle is coordinated with two oxygen and three nitrogen atoms. Two nitrates are chelated in the opposite positions of the macrocycle, and the third one is ionic.
胡学雷邱立赵元弟Key Laboratory of Biomedical Photonics of Ministry of Education - Wuhan National Laboratory for Optoelectronics - Hubei Bioinformatics and Molecular Imaging Key Laboratory - Key Laboratory of Molecular Biophysics of the Ministry of Education Huazhong University of Science and Technology潘志权
The title compound (13,27-dimethyl-3,6,9,17,20,23-hexaazatricyclo-[23.3.1.111,15]-triaconta-1(29),2,9,11,13,15(30),16,23,25,27- decaene-29,30-diol-N3, N6, N9, O29, O30)-bis (nitrato-O,O')-europium (III) nitrate hydrate ([EuL(NO3)2](NO3)·H2O, L denotes the macrocyc-lic ligand) was prepared and characterized by elemental analysis, infrared spectra, and electrospray mass spectra. Its crystal and molecular structure was determined by X-ray diffraction. The crystal crystallized in the monoclinic system, space group C2/c with a=2.3757 (4) nm, b=1.4302(3) nm, c=1.9584(3) nm, β=91.654(5)°, M=818.60, V=6.651(2) nm3, Z=8, D=1.635 g/cm, F(000)=3312, R=0.0542, wR=0.1045. The central ion Eu3+ was nine-coordinated in the coordinaton geometry of a distorted tricapped trigonal prism. The macrocycle was coordi-nated through two oxygen and three nitrogen atoms. Two nitrate are chelate in the opposite positions of the macrocycle, the third nitrate be-ing ionic. At room temperature, excitation of the title complex gave rise to the characteristic emissions of the Eu3+ ion.
New alkaline earth metal cryptates [ML](NO3)2·2H2O (M=Ca2+, Sr2+, Ba2+; L=1, 4, 12, 15, 18, 26, 31, 39, 42, 43, 44-undecaazapentacyclo-[13.13.13.16, 10.120, 24.133, 37]-tetratetraconta -4, 6, 8, 10(44), 11, 18, 20, 22, 24(43), 25, 31, 33, 35, 37(42), 38-pentadecaene) were synthesized by [2+3] template condensation of tris(2-aminoethyl) amine with 2, 6-diformylpyridine, and then by transmetallation reactions of the calcium cryptate [CaL](NO3)2·2H2O with corresponding lanthanide ions; three lanthanide cryptates [LnL](NO)3·3H2O (Ln=Eu, Gd, Tb) were synthesized and characterized by physical methods. The crystal structure of the terbium cryptate [TbL](NO)3·3H2O was studied by X-ray analysis. The central atom was coordinated by three pyridyl and six imino nitrogen atoms and exhibited a distorted tricapped trigonal prismatic coordination geometry.
