Syntheses, Structures, and Magnetic Properties of seven-coordinate Lanthanide Porphyrinate or Phthalocyaninate Complexes with Kläui’s Tripodal Ligand

A series of seven-coordinate mononuclear lanthanide­(III) complexes of the general formula [(TPP)­Ln­(L_OEt)]·0.25H₂O and [(Pc)­Ln­(L_OEt)] (Ln³⁺ = Dy³⁺, Tb³⁺, Ho³⁺, and Gd³⁺; TPP = 5,10,15,20-tetraphenylporphyrinate; Pc = phthalocyaninate; L_OEt^– = [(η⁵-C₅H₅)­Co­(P­(=O)­(OEt)₂)₃]⁻) are synthesized on the basis of the tripodal ligand L_OEt^– and either porphyrin or phthalocyanine ligands. All of the complexes are characterized by X-ray crystallography and by static and dynamic magnetic measurements. The Dy and Tb complexes show the field-induced slow relaxation of magnetization, and they are interesting seven-coordinate single-lanthanide-based SMMs. The magnetic relaxation properties of these double-decker sandwich complexes are influenced by the local molecular symmetry and are sensitive to subtle distortions of the coordination geometry of the paramagnetic lanthanide ions, such as metal-to-plane distances, plane center distances, and bending angles

Syntheses, Structures, and Magnetic Properties of seven-coordinate Lanthanide Porphyrinate or Phthalocyaninate Complexes with Kläui’s Tripodal Ligand

A series of seven-coordinate mononuclear lanthanide­(III) complexes of the general formula [(TPP)­Ln­(L_OEt)]·0.25H₂O and [(Pc)­Ln­(L_OEt)] (Ln³⁺ = Dy³⁺, Tb³⁺, Ho³⁺, and Gd³⁺; TPP = 5,10,15,20-tetraphenylporphyrinate; Pc = phthalocyaninate; L_OEt^– = [(η⁵-C₅H₅)­Co­(P­(=O)­(OEt)₂)₃]⁻) are synthesized on the basis of the tripodal ligand L_OEt^– and either porphyrin or phthalocyanine ligands. All of the complexes are characterized by X-ray crystallography and by static and dynamic magnetic measurements. The Dy and Tb complexes show the field-induced slow relaxation of magnetization, and they are interesting seven-coordinate single-lanthanide-based SMMs. The magnetic relaxation properties of these double-decker sandwich complexes are influenced by the local molecular symmetry and are sensitive to subtle distortions of the coordination geometry of the paramagnetic lanthanide ions, such as metal-to-plane distances, plane center distances, and bending angles

The investigation involved face-to-face interviews based on self-designed structured questionnaires and subsequente clinical breast examinations.

<p>And subjects with suspected positive physical signs would receive further ultrasonic and X-ray examinations and possible biopsies. After the above proceeds, breast cancer cases were identified. In total, 124,758 were collected in the study, and because of information loss, 122,058 cases were included in the final analysis.</p

Related factors of demographic variables of breast cancer.

<p>Related factors of demographic variables of breast cancer.</p

Explanation of terms used in the questionnaire.

<p>Explanation of terms used in the questionnaire.</p

Multivariate logistic analysis of breast cancer-related factors among women.

<p>Multivariate logistic analysis of breast cancer-related factors among women.</p

Detailed distributions of the breast cancer cases from the four survey areas by age are shown in this figure.

<p>Overall, breast cancer cases identified in this study were primarily diagnosed in the 40–45 and 45–50 year age groups.</p

Pathological information on cases of breast cancer.

<p>Pathological information on cases of breast cancer.</p

Random samples were obtained through multi-stage stratified cluster sampling.

<p>Shandong, Jiangsu, Hebei and Tianjin were selected as the sampling provinces because these provinces were manliy resident areas of Han ethnic group. And counties/regions and villages/communities were subsequently randomly selected from each province. Totally, 124,758 female, 1.5 times of the required sample size, were selected as study population. And the details of sampling information were shown in this figure.</p

Association between chronic diseases and breast cancer.

<p>Association between chronic diseases and breast cancer.</p