Hydrophosphination of Carbodiimides Using Protic Heptaphosphide Cages: A Unique Effect of the Bimodal Activity of Protonated Group 15 Zintl Ions

2012 ◽  
Vol 31 (6) ◽  
pp. 2452-2462 ◽  
Author(s):  
Robert S. P. Turbervill ◽  
Jose M. Goicoechea
Keyword(s):  
Unique Effect ◽  
Group 15 ◽  
Zintl Ions

ChemInform Abstract: Zintl Ions, Cage Compounds, and Intermetalloid Clusters of Group 14 and Group 15 Elements

ChemInform ◽  
2011 ◽  
Vol 42 (25) ◽  
pp. no-no
Author(s):  
Sandra Scharfe ◽  
Florian Kraus ◽  
Saskia Stegmaier ◽  
Annette Schier ◽  
Thomas F. Faessler
Keyword(s):  
Group 14 ◽  
Cage Compounds ◽  
Group 15 ◽  
Zintl Ions

Zintl Ions, Cage Compounds, and Intermetalloid Clusters of Group 14 and Group 15 Elements

2011 ◽  
Vol 50 (16) ◽  
pp. 3630-3670 ◽  
Author(s):  
Sandra Scharfe ◽  
Florian Kraus ◽  
Saskia Stegmaier ◽  
Annette Schier ◽  
Thomas F. Fässler
Keyword(s):  
Group 14 ◽  
Cage Compounds ◽  
Group 15 ◽  
Zintl Ions

Reactivity studies of group 15 Zintl ions towards homoleptic post-transition metal organometallics: a ‘bottom-up’ approach to bimetallic molecular clusters

2010 ◽  
Vol 39 (2) ◽  
pp. 426-436 ◽  
Author(s):  
Caroline Knapp ◽  
Binbin Zhou ◽  
Mark S. Denning ◽  
Nicholas H. Rees ◽  
Jose M. Goicoechea
Keyword(s):  
Transition Metal ◽  
Molecular Clusters ◽  
Bottom Up ◽  
Group 15 ◽  
Zintl Ions

scholarly journals Lewis pairing and frustration of group 13/15 elements geometrically enforced by (ace)naphthalene, biphenylene and (thio)xanthene backbones

2021 ◽  
Author(s):  
Omar Sadek ◽  
Ghenwa Bouhadir ◽  
Didier Bourissou
Keyword(s):  
Mixed Group ◽  
Group 13 ◽  
Group 15

The synthesis, structure, and reactivity of mixed group 13/group 15 compounds (E13 = B, Al, Ga, In, Tl; E15 = N, P, Sb, Bi) featuring a rigid (ace)naphthalene, biphenylene or (thio)xanthene backbone are discussed in this review.

scholarly journals Biomechanical Evaluation of Tarsometatarsal Fusion Comparing Crossing Lag Screws and Lag Screw With Locking Plate

2021 ◽  
pp. 107110072110335
Author(s):  
Sarah Ettinger ◽  
Lisa-Christin Hemmersbach ◽  
Michael Schwarze ◽  
Christina Stukenborg-Colsman ◽  
Daiwei Yao ◽  
...  
Keyword(s):  
Locking Plate ◽  
Screw Fixation ◽  
Operative Procedure ◽  
Fixation Technique ◽  
Lag Screw ◽  
Group 15 ◽  
Fresh Frozen ◽  
Biomechanical Evaluation ◽  
The Stability ◽  
End Stage

Background: Tarsometatarsal (TMT) arthrodesis is a common operative procedure for end-stage arthritis of the TMT joints. To date, there is no consensus on the best fixation technique for TMT arthrodesis and which joints should be included. Methods: Thirty fresh-frozen feet were divided into one group (15 feet) in which TMT joints I-III were fused with a lag screw and locking plate and a second group (15 feet) in which TMT joints I-III were fused with 2 crossing lag screws. The arthrodesis was performed stepwise with evaluation of mobility between the metatarsal and cuneiform bones after every application or removal of a lag screw or locking plate. Results: Isolated lag-screw arthrodesis of the TMT I-III joints led to significantly increased stability in every joint ( P < .05). Additional application of a locking plate caused further stability in every TMT joint ( P < .05). An additional crossed lag screw did not significantly increase rigidity of the TMT II and III joints ( P > .05). An IM screw did not influence the stability of the fused TMT joints. For TMT III arthrodesis, lag-screw and locking plate constructs were superior to crossed lag-screw fixation ( P < .05). TMT I fusion does not support stability after TMT II and III arthrodesis. Conclusion: Each fixation technique provided sufficient stabilization of the TMT joints. Use of a lag screw plus locking plate might be superior to crossed screw fixation. An additional TMT I and/or III arthrodesis did not increase stability of an isolated TMT II arthrodesis. Clinical Relevance: We report the first biomechanical evaluation of TMT I-III arthrodesis. Our results may help surgeons to choose among osteosynthesis techniques and which joints to include in performing arthrodesis of TMT I-III joints.

Reactions of some Group 15 ligands with [(η5-indenyl)Fe(CO)3]BF4

1993 ◽  
Vol 455 (1-2) ◽  
pp. 157-166 ◽  
Author(s):  
David A. Brown ◽  
Noel J. Fitzpatrick ◽  
William K. Glass ◽  
Hakim A. Ahmed ◽  
Desmond Cunningham ◽  
...  
Keyword(s):  
Group 15

The Political Economy of Urban Homicide: Assessing the Relative Impact of Gender Inequality on Sex-Specific Victimization

2003 ◽  
Vol 18 (1) ◽  
pp. 35-54 ◽  
Author(s):  
Mari A. DeWees ◽  
Karen F. Parker
Keyword(s):  
Political Economy ◽  
Gender Inequality ◽  
Urban Areas ◽  
Gender Disparities ◽  
Homicide Victimization ◽  
Mixed Support ◽  
Unique Effect ◽  
Market Opportunities ◽  
Us Cities ◽  
Theoretical Issues

This research examines the ways in which the changing political economy of urban areas has contributed differently to the homicide victimization rates of females and males across US cities. Recent research, while relatively limited, has presented disparate results regarding the effect of gender inequality on urban sex-specific victimization. Our work further explores this relationship by taking into account relative gender disparities in income, education, labor market opportunities, and politics in an examination of sex-specific homicide victimization in 1990. Key to this current investigation is the evaluation of feminist and lifestyle arguments that suggest that structural gender inequality has a unique effect on female victimization. Overall, our findings reveal gender inequality to be a significant predictor of both male and female urban homicide. While these findings suggest mixed support for theoretical arguments regarding gender inequality, further analyses reveal significant differences in specific types of gender inequality on victimization patterns across genders. These additional results highlight the need for greater attention toward both methodological and theoretical issues when examining the interconnections between gender, political economy, and violence in research.

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