Results 291 to 300 of about 3,541,930 (355)

Influence of low viscosity resin infiltrant on the adhesion of orthodontic attachments. [PDF]

open access: yesDental Press J Orthod
Barreto BCT   +6 more
europepmc   +1 more source

Bond length and bond multiplicity: σ-bond prevents short π-bonds

Chem. Commun., 2006
Analysis of model compounds such as Fe2(CO)6, C2 and HBBH shows that pi-bonds left to themselves are shorter than sigma-bonds; in many ways sigma-bonds prevent pi-bonds from adopting their optimal shorter distances.
Jemmis, Eluvathingal D   +3 more
openaire   +2 more sources

Poison Bonds

SSRN Electronic Journal, 2023
This paper documents the rise of "poison bonds", which are corporate bonds that allow bondholders to demand immediate repayment in a change-of-control event. The share of poison bonds among new issues has grown substantially in recent years, from below 20% in the 90s to over 60% since mid-2000s. This increase is predominantly driven by investment-grade
Renjie, Rex Wang, Xia, Shuo
openaire   +2 more sources

Savings bonds, retractable bonds and callable bonds

Journal of Financial Economics, 1977
Abstract Savings bonds, retractable bonds and callable bonds are each equivalent to a straight bond with an option. Neglecting default risk the value of these contingent claims depends upon the riskless interest rate. This paper employs the option pricing framework to value these bonds, under the assumptions that the interest rate follows a Gauss ...
Michael J. Brennan, Eduardo S. Schwartz
openaire   +1 more source

Chalcogen Bond: A Sister Noncovalent Bond to Halogen Bond

The Journal of Physical Chemistry A, 2009
A sister noncovalent bond to halogen bond, termed chalcogen bond, is defined in this article. By selecting the complexes H(2)CS...Cl(-), F(2)CS...Cl(-), OCS...Cl(-), and SCS...Cl(-) as models, the bond-length change, interaction energy, topological property of the electron charge density and its Laplacian, and the charge transfer of the chalcogen bond ...
Weizhou, Wang, Baoming, Ji, Yu, Zhang
openaire   +2 more sources

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