The formation and growth of calcium phosphate precipitation pattern were investigated in agar gel system. As an important biologic surfactant, the influence of bile salts on the patterns and composition of calcium pho...
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The formation and growth of calcium phosphate precipitation pattern were investigated in agar gel system. As an important biologic surfactant, the influence of bile salts on the patterns and composition of calcium phosphate precipitation was discussed. The results indicated that calcium phosphate precipitation shaped the periodic ring pattern in agar gel system. Addition of bile salts will postpone the creation of the periodic ring pattern of calcium phosphate precipitation. NaTC only postponed the creation but not changed the pattern of it. NaC and NaDC not only postponed the creation but also changed the pattern of it. The results of FT IR spectroscopy demonstrated that NaTC have promoted the transformation of calcium phosphate to hydroxyapatite.
A tri(8 quinolinol)nickel coordination compound, [Ni 2(HQ) 3Q 3] ClO 4, was synthesized and its crystal structure was determined by X ray diffraction. The crystal structure indicated a space group of P2 1/c with a =1....
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A tri(8 quinolinol)nickel coordination compound, [Ni 2(HQ) 3Q 3] ClO 4, was synthesized and its crystal structure was determined by X ray diffraction. The crystal structure indicated a space group of P2 1/c with a =1.613 8(1) nm, b =1.590 0(1) nm, c =1.939 9(1) nm, β =94.663(2)°, V = 4.961 2(6) nm 3 and Z =4. Three strong hydrogen bonds were found in each unique unit between two tri(8 quinolinol) nickel fragments.
The aminocarboxylic acid, phenyliminodiacetic acid [C 6H 5N(CH 2COOH) 2, H 2L] , was synthesized by the reaction between phenylid and chloroacetic acid. The copper complex with the acid [CuL(H 2O)] was obtained in aqu...
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The aminocarboxylic acid, phenyliminodiacetic acid [C 6H 5N(CH 2COOH) 2, H 2L] , was synthesized by the reaction between phenylid and chloroacetic acid. The copper complex with the acid [CuL(H 2O)] was obtained in aquo solution and its crystal structure was determined by X ray diffraction with a final R 1 value of 0.024 4 and a wR 2 value of 0.066 0. The crystal is of monoclinic system with a space group P2 1/C . The unit cell parameters are as follows: a =1.218 3(2) nm, b =0.868 31(10) nm, c= 0.979 40 nm , β =96.100(10)°, V =1.032 2(2) nm 3, Z =4, D c=1.862 g/cm 3, F (000)=588, μ =2.129 mm -1 . In crystal, each copper ion is coordinated with three oxygen atoms and one nitrogen atom from H 2L and an oxygen atom from water; the coordination polyhedron around Cu 2+ is a distorted tetragonal pyramid. Cu 2+ are linked by anti anti carboxyl bridges to form endless zigzag chain, a two dimensional network is obtained through the hydrogen bonds between the adjacent chains.
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