geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Metal complexes of vitamin b 6 related compounds crystal and molecular structures of aqua 5' phosphopyridoxylideneglycinatocopper ii trihydrate and bispyridoxylideneglycinatonickel ii hexahydrate


, : Metal complexes of vitamin b 6 related compounds crystal and molecular structures of aqua 5' phosphopyridoxylideneglycinatocopper ii trihydrate and bispyridoxylideneglycinatonickel ii hexahydrate. Journal of the Chemical Society Dalton Transactions (10): 2051-2058

The crystal structures of two Schiff-base metal complexes, aqua(5'-phosphopyridoxylideneglycinato)-copper(II) trihydrate, [Cu(P-Pxd-Gly)(H2O)].cntdot.H2O (1), and bis(pyridoxylideneglycinato)nickel(II) hexahydrate, [Ni(Pxd-Gly)2].cntdot.6H2O (2), have been determined using single-crystal X-ray diffraction methods. Compound (1) crystallizes in space group P.hivin.1 with a = 8.394(4), b = 9.819(8), c = 10.884(7) .ANG., .alpha. = 101.85(6), .beta. = 97.48(5), .gamma. = 112.60(5).degree., and Z = 2; compound (2) crystallizes in space group Pnna with a = 20.233(3), b = 19.423(3), c = 13.956(3) .ANG., and Z = 8. The structures were solved by the heavy-atom method and refined to R values of 0.064 and 0.129, respectively. The CuII ion has a square-pyramidal geometry in compound (1) with phenolic oxygen, imine nitrogen, and carboxylate oxygen atoms of the Schiff-base ligand and a water molecule as basal donors. The compound is a one-dimensional polymer due to the axial coordination of one of the phosphate oxygens of a neighbouring molecule. The two tridentate Schiff-base ligands provide an octahedral geometry around the NiII ion in compound (2). The near-planarity of the ligand in compound (1) and non-planarity in compound (2) are discussed in terms of the relative reactivities.

US$29.90


Other references

Matsui, H.; Hazama, S.; Sakamoto, K.; Shindo, Y.; Kanekiyo, S.; Nakashima, M.; Matsukuma, S.; Tokuhisa, Y.; Iida, M.; Suzuki, N.; Yoshimura, K.; Takeda, S.; Ueno, T.; Yoshino, S.; Oka, M.; Nagano, H., 2017: Postoperative Adjuvant Therapy for Resectable Pancreatic Cancer With Gemcitabine and Adoptive Immunotherapy. We previously described adoptive immunotherapy (AIT) with cytotoxic T lymphocytes (CTLs) stimulated by the mucin 1 (MUC1)-expressing human pancreatic cancer cell line YPK-1 (MUC1-CTLs) and demonstrated that MUC1-CTLs might prevent liver metastasis...

Cribe, A.S.; Cuevas, A.F.; Morales, M.N., 1956: Acute chyle peritonitis; a case report. Philippine Journal of Surgery 11(3): 92-96

Hamada, Y.; Kuriyama, I.; Miyao, M.; Ono, Y.; Ideguchi, S., 1969: Exanthematous disease due to ECHO 5 virus. Tokushima Journal of Experimental Medicine 16(1): 27-31

Sugiyama, Y.; Ohsawa, H., 1974: Population dynamics of Japanese macaques at Ryozenyama, Suzuka Mts. 1. General view. Japanese Journal of Ecology, 241 50-59

Pals, L.S., 1994: Extensification programme and organic agriculture. Who profits by it?. From the beginning of the financial year 1989/90, extensive agriculture is being promoted by the EU extensification programme. In practice, only the change of the whole farm to organic production has gained ground. Relinquishing chemical/artificia...

Lipp, P.; Niggli, E., 1994: Micro-heterogeneity of subcellular Ca signaling in cardiac myocytes Focal release and spiral waves. Biophysical Journal 66(2 PART 2): A94

Damestani, Y.; Galan-Hoffman, D.E.; Ortiz, D.; Cabrales, P.; Aguilar, G., 2016: Inflammatory response to implantation of transparent nanocrystalline yttria-stabilized zirconia using a dorsal window chamber model. Nanomedicine 12(7): 1757-1763

Raymond, S.H., 1974: A trial of the Cardiff infusion pump. New Zealand Medical Journal 79(516): 973-976

Salord, J.; Schuber, F., 1988: In vitro drug delivery mediated by ecto-NAD+-glycohydrolase ligand-targeted liposomes. We have studied the growth-inhibitory potency of methotrexate and methotrexate-gamma-aspartate encapsulated in liposomes conjugated to ligands of ecto-NAD+-glycohydrolase (Salord, J. et al., Biochim. Biophys. Acta 886 (1986) 64-75). The ability of...

Sinclair T.R.; Knoerr K.R., 1982: Distribution of photosynthetically active radiation in the canopy of a loblolly pine pinus taeda plantation. Photocells were traversed at 6 heights in a loblolly pine canopy to obtain instantaneous measurements of photosynthetically active radiation. When the incident radiation was predominantly direct-beam, a bimodal distribution of radiation in the for...